Сверлильная коронка со сменным режущим участком

Изобретение относится к инструментам для сверления или бурения и может быть использовано при обработке материалов сверлильными или буровыми коронками со сменными режущими участками. Сверлильная коронка выполнена с возможностью вращения вокруг оси и имеет режущий участок с одним или несколькими режущими сегментами и первым элементом вставного соединения, а также участок стержня сверла со вторым элементом вставного соединения, который образует вставное соединение с первым элементом вставного соединения. Первый элемент вставного соединения и второй элемент вставного соединения могут быть соединены штифтовым соединением. Обеспечивается надежное соединение участка стержня сверла и режущего участка, снижаются затраты на замену режущих элементов. 14 з.п. ф-лы, 4 ил.

АВТОМАТИЧЕСКИЙ СТАНОК ДЛЯ РЕЗКИ ПЛИТКИ

Изобретение относится к автоматическому станку (1) для резки плитки, включающему стол (31) для резки, выполненный с возможностью приема необработанной плитки (21), и по меньшей мере один режущий инструмент (59), установленный с возможностью перемещения вдоль направляющей (61), выполненный с возможностью резки плитки (21) по линии (33) реза и получения готовой плитки и обрезков, по меньшей мере один первый конвейер (11), выполненный с возможностью подачи необработанной плитки (21) из зоны (5) загрузки плитки в зону (7) нарезки плитки, по меньшей мере два ограничителя (15), установленные с возможностью фиксации плитки (21) в зоне (7) нарезки посредством размещения плитки в предварительно заданном положении, и электронный блок (57) управления, выполненный с возможностью задания положения ограничителей (15) и режущего инструмента (59), в соответствии с заданными параметрами резки, и управления режущим инструментом (59). 8 з.п. ф-лы, 4 ил.

УСТРОЙСТВО ДЛЯ ОТПИЛИВАНИЯ ОТВЕРЖДЕННОГО БЕТОННОГО ИЗДЕЛИЯ, ПОЛУЧЕННОГО С ПОМОЩЬЮ СКОЛЬЗЯЩЕЙ ОПАЛУБКИ

Изобретение относится к устройству, применяемому для отпиливания отвержденных бетонных изделий, полученных с помощью скользящей опалубки, на стенде для разливки перед удалением отпиленных бетонных изделий со стенда для разливки. Техническим результатом является сокращение времени, требуемого на смену выполняемого процесса - с распила на очистку и переоборудование стенда для разливки, а также на сами этапы очистки и переоборудования, а также устраняет необходимость в машинных лифтах на заводе-изготовителе и, соответственно, опасности для персонала. Устройство содержит раму с колесами для перемещения устройства вдоль стенда для разливки и пилу для резки бетона, соединенную с рамой с возможностью перемещения. При этом устройство содержит щеточный блок для очистки стенда для разливки. Причем щеточный блок соединен с рамой устройства с возможностью регулируемого перемещения в вертикальном направлении, для использования щеточного блока для очистки верхней поверхности литого бетонного изделия ...

Устройство для резки блоков газобетона

Полезная модель относится к области строительства, а именно к оборудованию для распиливания блоков газобетона, к производству строительных материалов, а именно к оборудованию для распиловки блоков газобетона. Устройство содержит режущие диски с алмазным покрытием, дополнительно содержит раму, к которой присоединены подвижные и неподвижная трубы, в неподвижной трубе выполнен вырез длиной L=dнд+20 мм+dвт, где dнд - диаметр не подвижного диска, dвт - диаметр втулки, в трубах выполнены отверстия с втулкой, в которых расположен вал с шершавым покрытием, диск с алмазным покрытием насажен на вал с шершавой поверхностью. Технический результат заключается в обеспечении осуществления вертикальной резки камня, выреза паза в камне, кроме того, оборудование имеет подвижные пилы, с помощью которых можно регулировать параметры паза. 1 ил.

ПЕРЕНОСНОЙ СТАНОК ДЛЯ РЕЗАНИЯ КАМНЯ

Переносной станок предназначен для резания камня. Технический результат - обеспечение переносным станком возможности произвольной траектории резания и ручного направления режущего инструмента. B переносном станке рама присоединена к опорному элементу с помощью монтажной детали. Рама служит опорой двигателю и передаточному устройству для привода режущего инструмента. Рукоятка предназначена для смещения станка по поверхности камня, имеется средство для регулирования глубины подачи режущего инструмента в камень. На поверхности опорного элемента, обращенной к камню, предусмотрено множество шаровых спор качения для обеспечения возможности свободного перемещения опорного элемента, рамы и режущего инструмента с целью следования вдоль прямолинейной или криволинейной траектории. 6 з.п.ф-лы, 4 ил.

Станок для распиловки керна

Изобретение относится к области геологоразведочных работ и может быть использовано для распиловки керна горных пород. Техническим результатом являются упрощение и усовершенствование конструкции подающего устройства рабочего органа, повышение точности выполнения распилов керна, снижение износа алмазного отрезного круга, а также расширение функциональной возможности станка для распиловки керна и снижение металлоемкости конструкции. Станок содержит рабочий стол с узлом крепления подлежащего резке керна горной породы, привод рабочего органа в виде алмазного отрезного круга и подающее устройство рабочего органа. Причем узел крепления керна выполнен с возможностью перемещения в двух взаимно перпендикулярных направлениях относительно рабочего стола, при этом распиливаемый керн закреплен хомутом с помощью стягивающего винта, причем на рабочем столе установлена направляющая, на которой жестко закреплены тиски в виде полукруга и неподвижной гайки, при этом в тиски установлен хомут с керном, причем ...

РЕЖУЩИЙ И СОБИРАЮЩИЙ ПЫЛЬ И ГРЯЗЬ УЗЕЛ И РАБОЧАЯ МАШИНА

... 1. Режущий и собирающий пыль и грязь узел, который содержит:a) полотно (4) циркулярной пилы, имеющее первую сторону (20), вторую сторону (21), периферийный участок, образующий рабочую часть полотна пилы, и центр вращения (23),b) защитный кожух (5), простирающийся поверх полотна пилы вокруг по меньшей мере половины его окружности,c) ограждающее устройство (6), которое проходит в направлении, перпендикулярном указанному центру вращения (23), при этом ограждающее устройство (6) имеет передний конец (31), задний конец (32), верхнюю поверхность (34), нижнюю поверхность (36), вытянутые боковые стенки (35) и возможные внутренние боковые стенки, и продольный проход (45,46) для полотна пилы, при этом указанный проход продолжается через ограждающее устройство от его верхней поверхности (34) до его нижней поверхности (36) в области между передними и задними концами ограждающего устройства,d) при этом защитный кожух (5) и ограждающее устройство (6) шарнирно соединены или соединяются друг с другом посредством ...

Способ предварительного формообразования цилиндрических каменных валов

Изобретение относится к технологии обработки камня и может быть использовано в строительстве и машиностроении на операциях черновой обработки крупных гладких валов, в частности прессовых гранитных валов бумагоделательных машин и цилиндрических колонн, и позволяет повысить производительность . Это достигается тем, что на вале 1 вдоль ребер излишки камня в виде угловых гребешков 2 последовательно удаляют дисковой пилой 3. 1 ил.

Werkzeuggerät mit einer Sprühvorrichtung zur Staubbindung

Werkzeuggerät (10) zum Bearbeiten eines Werkstückes (23) aufweisend ein Bearbeitungswerkzeug (12), das von einer Antriebseinrichtung (13) in einer Drehrichtung (14) um eine Drehachse (15) drehbar ist, eine Schutzhaube (25), die das Bearbeitungswerkzeug (12) zumindest teilweise umgibt, und eine Sprühvorrichtung (11) mit einer ersten Sprühdüse (37), die auf einer aus dem Werkstück (23) austretenden Seite (32) des Bearbeitungswerkzeuges (12) angeordnet ist.

Tischkreissäge

Winkelstufen und Stufenplatten in Natur- und Betonwerkstein

ORGANISCH- ANORGANISCHER NANOVERBUNDWERKSTOFF UND DESSEN HERSTELLUNG

Saw blade positioning mechanism for annular sawing machine

Improvements in or relating to the Sawing of Glass and the like Substances.

... 15,374. Taylor, W. Nov. 1. Sawing and like cutting; work-holders.-In sawing glass, precious stones, and similar hard materials by diamond or abrasive - charged laps or saws, the relative feeding movement between the saw and the glass &c. is effected by a definitely limited force sufficient to effect the movement at a suitable rate when the saw is in proper condition, but not sufficient to damage the glass or saw when the saw is blunt. Means are provided to limit the movement to the desired rate. In the circular-saw machine shown, the glass 27 is cemented to a plate removably secured to an arm 33 by a bolt 35 and slot 34. The arm 33 is secured to a rock-shaft 28 so that the feed is given by gravity, the speed of feed being checked by a cam 38 engaging an arm 37 on the rock-shaft and driven by enclosed worm-gearing from a pulley 41. The cam is frictionally connected to the worm-wheel so that it may be set by hand, a stop being provided to prevent excess movement. A flat 40 is provided on ...

Power cutter with adaptor for mounting a cutting blade

A power cutter comprises a support arm (7, fig 2), which projects forward of a housing (2, fig 2), and a blade mounting mechanism rotatably mounted on an end of the support arm. An adaptor 90 surrounds a spindle 70, upon which is mounted a cutting blade 10. The adaptor 90 has a plurality of radial support surfaces 98, 100 along its length, each concentric with the spindle, and each having a different radius. A clamping mechanism 86, 92, 96 is capable of axially and angularly locking the cutting blade to the spindle, such that when the blade is mounted on the adaptor, a central hole of the blade mounts on a corresponding sized radial support surface of the adaptor so that the axis of rotation of the blade 10 is substantially co-axial with that of the spindle.

Cutting appatatus with guides

Apparatus for cutting tiles comprising a base (29, 30), a gap in the base through which a cutting wheel (26) projects, and a guide fence (35) linearly slidably adjustable over the base. The guide fence (35) has clamps (54, 55) at its opposite ends for snap-fit quick engagement and release with a body (10) of the apparatus, and has slots (71, 72) in its upper surface for the releasable engagement of tags (69, 70) at the lower end of a mitre guide (66) which provides a flat surface (68) at an angle to the base (29, 30) for producing a mitre cut for a tile received on said surface (68) and fed at said angle onto the cutting wheel.

Improvements in apparatus for cutting stone and like materials

... 599,998. Stone &c. cutting machines.' BRAMLEY ENGINEERING CO., Ltd., FITTON, H. G. G., and ELLIOTT, G. Sept. 27, 1945, No. 25105. [Class 124] In a machine for cutting stone and like material in which the stone is carried by a table 3 traversable on rails 2 below a circular saw or like cutting disc 8, the shaft 7 of which is mounted on a saddle 5 vertically reciprocable on a standard 4, the saw 8 is given a gyratory movement about its normal axis of rotation by mounting its shaft 7 eccentrically within a sleeve 11 which is driven at a different speed to the shaft by means of a pinion 15 on the shaft, pinions 16, 17 on a parallel lay-shaft 18 and a pinion 12 on the sleeve. Plain bearings 13 support the shaft centrally within the sleeve, the eccentric end portions of which are mounted in roller or equivalent bearings 10 carried by dependent portions 9 of an overhung part 6 of the saddle 5. Specification 346,500 is referred to.

Saw blade positioning mechanism for annular sawing machine

A saw blade positioning mechanism for an annular sawing machine 10 includes an active wheel 16 and a protective case 30, two first driven wheels 40, two second driven wheels 50, and an adjustment component. The two first driven wheels are insertedly engaged with the positioning annular grooves 183 of the first lateral side of the annular saw blade.The protective case conceals a portion of an annular saw blade 18. The first and second driven wheels are rotatably disposed at two opposing ends of the protective case and abut against two opposing lateral sides of the annular saw blade, respectively. The adjustment component is disposed at the protective case to drive the protective case to move in the radial direction of the annular saw blade relative to the annular saw blade. The position of the protective case is adjusted with the adjustment component such that the first and second driven wheels get positioned in place synchronously with displacement of the protective case. The protective ...

A platform device for angle grinding

A platform device 99, for supporting a workpiece such as a paving block, has a flat plate 30 with a lip 40 extending orthogonally from the plate. The plate has at least one slot 8, 9 that extends through a portion of the lip. The plate top face has angle markings 20 for angles associated with the one or more slots, and the plate has a lower face arranged to engage a subordinate surface which may have barbs 10 to reduce slippage on a soft surface such as soil or grass. The barbs may also be flattened for use on a hard surface and mounting holes 5 may be used to secure the device to a bench or a machine.

ELECTRICALLY PROPELLED CUTTING MACHINE WITH WATER-COOLED GUMPTION SHEET

PROCEDURE AND DEVICE FOR CUTTING PLATES FROM STONE.

PLANT FOR THE TREATMENT OF WET, IN PARTICULAR FOR CUTTING STONE.

MACHINE FOR CUTTING STONE OR OTHER MATERIALS.

GUMPTION OR SAWING MACHINE

A handheld cut-off saw for cutting concrete and stone, comprising a drive arrangement for driving a circular cutting tool

A handheld cut-off saw (300) for cutting concrete and stone, the handheld cut-off saw comprising a drive arrangement (100, 200, 600, 800) for driving a circular cutting tool (110), the drive arrangement comprising: a belt drive portion (120) comprising a first pulley (121) and a second pulley (122), wherein the first pulley is arranged to be powered by a power source (130) and to drive the second pulley via a belt (123), wherein the second pulley (122) has a larger pitch diameter than the first pulley (121); and a gear transmission portion (140) comprising a first gearwheel (141) and a second gearwheel (142), wherein the first gearwheel (141) is co-axially connected to the second pulley (122) and radially connected to the second gearwheel (142), and wherein the second gearwheel (142) is arranged to be co-axially connected to the circular cutting tool (110).

METHOD & APPARATUS FOR EXCAVATING A RECESS

Portable working machine

Cutting device and a method for cutting a pile

The object of the invention is a cutting device (100) for cutting a pile, comprising a body part (102), which comprises means (103) for connecting the cutting device to a working machine. The cutting device (100) comprises gripping means (104) attached to the body part (105) to drive the cutting device around the pile to be cut, said gripping means (104) comprising at least two opposite gripping parts (106) to obtain a grip from the pile to be cut to hold on to the pile, to obtain a grip from the pile to be cut to move the pile away, and to release the gripping means (104) from said grips. The cutting device (100) comprises at least two sawing parts (108) arranged to move to a sawing position and to a secure position, and the cutting device (100) comprises sawing means (110) connected to the sawing parts (108) to perform sawing operation when at least one sawing part is in the sawing position, and the cutting device (100) comprises elastic means (114) to adapt to forces, which arises during ...

Rotary gear transmission for tools

A cutting tool mechanism (11) for providing a cutting, abrading or grinding action is disclosed. The mechanism (11) has an inner circular part (17) having teeth (19) extending radially outwardly, a surrounding circular part (25) having inner teeth (27) extending radially inwardly. The circular parts (17) and (25) co-operate by engagement their teeth (19) and (27). Rotation of one circular part causes the other to move constrained by the engagement of the teeth in an orbital, oscillatory or impact motion. An input coupling (81) is provided for transmission of rotary motion, and an output coupling (37) is provided to transmit said orbital, oscillatory or impact motion to a blade (13). In further embodiments, the surrounding circular part (25) can be provided with outwardly extending teeth and surrounded by a further outer circular part with inwardly extending teeth, to cooperate with the outwardly extending teeth, to provide more complex orbital, oscillatory or impact motion.

COOLING HUB FOR A CONCRETE SAW BLADE

CUTTING BLADE AND METHOD FOR PRODUCING SUCH A BLADE

The present disclosure relates to a cutting blade (3) for a clearing saw (1), the cutting blade (3) having a plurality of teeth (11), at least some of which comprise a leading edge (19), a trailing edge (21), and a point (17) in between the leading and trailing edges. The trailing edge (21) is hardened to a depth in the range 0.02-1.5 mm, and the leading edge (19) is left unhardened. This provides a cutting blade with increased durability and efficiency, that can still be filed manually to remain sharp.

MACHINE FOR CUTTING STONE MATERIAL

A machine (12) for cutting slabs, comprises a workpiece support bench (14) adapted to support at least one slab, and cutting means for automated cutting of the slab on the bench. The cutting means comprise two lateral support structures (16, 18). A first beam (20) is adapted to move along said lateral support structures (16, 18). The first beam (20) is adapted to slide on the lateral support structures (16, 18) via its ends (22, 24) and guiding means (25, 26) provided on the lateral support structures (16, 18). The first beam (20) is provided with a first carriage (28) adapted to be moved along the first beam (20). A first sleeve (30) adapted to be moved towards or away from the workpiece support bench (14) is provided on the first carriage (28). A first machining head (32) comprising a first cutting spindle (34) is provided on the first sleeve (30). A second beam (201) is adapted to move along the lateral support structures (16, 18). The second beam (201) is adapted to slide on the lateral ...

METHODS OF FORMING LAMINATED GLASS STRUCTURES

A method of field shaping a laminated glass structure is provided. The method includes providing the laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive material. The laminated glass structure is field cut using a handheld power tool thereby forming a shaped laminated glass structure. An edge strength of a cut edge of the shaped laminated glass structure at least about 20 MPa.

CONCRETE SAW RACK HAVING SLOT TO ACCOMMODATE BLADE

A transportation system for a concrete saw includes an opening in a support surface for the concrete saw. The opening in the support surface is positioned and sized to receive the saw blade while the concrete saw is supported by the support surface. The transportation system is adapted to be loaded on a transporter for transportation of the construction equipment.

CUTTING APPARATUS

Apparatus for cutting tiles comprising a base (29, 30), a gap in the base through which a cutting wheel (26) projects, and a guide fence (35) linearly slidably adjustable over the base, the guide fence having a flat side surface for engagement by a tile to be cut, so that by suitable adjustment of the position of the guide fence relative to the cutting wheel (26) the tile is correctly positioned for it to be fed forwards to the cutting wheel for the desired cut. The guide fence (35) has clamps (54, 55) at its opposite ends for snap-fit quick engagement and release with a body (10) of the apparatus, and has slots (71, 72) in its upper surface for the releasable engagement of tags (69, 70) at the lower end of a mitre guide (66) which provides a flat surface (68) at an angle to the base (29, 30) for producing a mitre cut for a tile received on said surface (68) and fed at said angle onto the cutting wheel.

CUTTING APPARATUS

A tile cutter comprises a moulded body (10) defining a work surface, and a cutting wheel (13) for cutting a tile positioned on the work surface, the body having respective lips (22) at opposite sides thereof, and there being a guide fence (18) adjustably slidable over the work surface, the guide fence having alignment arms (19, 20) at its opposite end respectively, which arms have respective parts fitting under the lips so as to maintain the guide fence parallel to the cutting wheel in any adjusted position at which the guide fence can be locked in place. The cutting wheel (13) is shrouded by a spray guard (14) which is adjustably carried on a riving blade (15), access to a bolt head of the arrangement fixing the spray guard to the blade (15) normally being prevented by means of a snap-fitted clip (32), with adjustment of the spray guard being permitted by a clamping knob (27). A sludge tray (32) is removably fitted in a fluid reservoir of the body (10).

Maschine zum Schneiden von Schieferplatten.

Dispositif pour scier des matières dures

Machine automatique pour scier les matériaux durs

Tronçonneuse mixte à bois et à autres matériaux

Verfahren zum Zurichten von Dachziegeln und Vorrichtung zur Ausübung des Verfahrens

Vorrichtung zum Schneiden von Dachziegeln.

Einrichtung zum Zurichten von Dachziegeln, Zementasbestplatten, Steinplatten und dgl.

Method for cutting through manhole neck or pipe uses rotating cutter mounted on legs so that it can be positioned accurately over manhole

The method for cutting through a manhole neck or pipe (1) uses a rotating cutter (8) mounted on legs (7) so that it can be positioned accurately over the manhole. An independent claim is included for a machine (6) for carrying out the method.

METHOD AND DEVICE FOR PROCESSING CARBON BLOCKS

Diamond saw blade

Automatic circular saw for cutting and sectioning circular concrete.

Process and apparatus to saw glasses meniscuses

DISPOSITIF STABILISATEUR POUR UN DISQUE DIAMANTE ROTATIF DANS UNE MACHINE A TRAVAILLER LA PIERRE

Dispositif stabilisateur pour un disque diamanté rotatif dans une machine à travailler la pierre, en particulier le granit. Ce dispositif comporte des flasques 6, 9 appliques sur chaque face du disque vertical 3 avec des intervalles e suffisants pour la formation de coussins de fluide entre les flasques et les deux faces du disque 3 afin de le stabiliser, ces flasques présentant des alvéoles centrales 21 dans lesquelles peut etre injecté le fluide sous pression amené par des canalisations 22. Trois flasques symétriques par rapport au disque 3 peuvent ainsi être placés de chaque côté de celui-ci. Le dispositif stabilisateur selon l'invention réduit considérablement les vibrations du disque 3 pendant sa rotation, ce qui diminue le bruit et accroît le rendement de la machine.

A PROCESS IN THE ROASTING OF ORE FOR REMOVING QUANTITIES OF TIN CONTAINED THEREIN

Cutting method and manufacturing process for cutting products

Disclosed is a cutting method comprising a cutting step of bringing a cutwork assisting lubricant into contact with cutting tools and/or the part of a workpiece to be cut, and meanwhile cutting the workpiece with the cutting tools so as to form through grooves penetrating through the front surface and the back surface of the workpiece. The workpiece contains at least one material selected from a group consisting of metal, fiber-reinforced plastics, ceramics and composite material of these.

CUTTING APPARATUS

Apparatus for cutting tiles comprising a base (29, 30), a gap in the base through which a cutting wheel (26) projects, and a guide fence (35) linearly slidably adjustable over the base, the guide fence having a flat side surface for engagement by a tile to be cut, so that by suitable adjustment of the position of the guide fence relative to the cutting wheel (26) the tile is correctly positioned for it to be fed forwards to the cutting wheel for the desired cut. The guide fence (35) has clamps (54, 55) at its opposite ends for snap-fit quick engagement and release with a body (10) of the apparatus, and has slots (71, 72) in its upper surface for the releasable engagement of tags (69, 70) at the lower end of a mitre guide (66) which provides a flat surface (68) at an angle to the base (29, 30) for producing a mitre cut for a tile received on said surface (68) and fed at said angle onto the cutting wheel.

Adjustable support for cutting apparatus

A cutting tool such as a tile saw is pivotally connected to a linear guide rod with a four-bar linkage. The linkage allows the cutting tool to be raised and lowered over a work table to facilitate plunge cutting. One link of the four-bar linkage is mounted over the linear guide rod in a fixed perpendicular relationship with the surface of the work table to ensure that the blade of the cutting tool is maintained in a similar perpendicular orientation throughout plunge cutting. This is achieved by adjusting the links of the four-bar linkage as a parallelogram linkage. A linear bearing is fitted between the fixed perpendicular link and the guide rod to allow the cutting tool and linkage to freely slide along an accurate linear cutting path.

Masonry slitting apparatus

A masonry slitting apparatus includes a housing (1) containing a drive unit (2) for a slitting tool (4) and a trolley (3) to which the housing is pivotally connected by a rotary bearing (6) located in a first end region of the housing and trolley. The trolley (3) has a locking rail projecting toward the housing in a second end region with an adjustable depth stop (18) located on the locking rail (17). The housing (1) has a locking pawl (12) cooperating with the locking rail (17) and the pawl is actuated by a locking switch (11) in a handle (9) on the housing (1). The depth stop (18) has a locking arm (28) for securing the housing in a working position.

Waste containment system and method for an abrading or cutting device

Abrading and cutting devices such as saws include waste containment systems and methods to improve removal of slurry or other contaminants from a work area during operations, and separation of slurry from a carrying medium such as air. A vacuum bar includes high and low vacuum openings to help focus flow and to conserve vacuum pressure. One opening faces the saw blade. A slurry containment and separation container includes walls and configurations for the inlets and outlets that enhance cleaner separation of the air and the slurry. Coolant is applied to the saw blade to make operation and cleanup more efficient. The vacuum generator can operate off of the power generated by the machine.

PORTABLE WORKING MACHINE

Tool unit and driving member for a cutting or sawing machine

The invention concerns a tool unit for a cutting or sawing machine, comprising at least one disk shaped tool (3) having a first side (3a), a second side (3b), a peripheral edge portion (54) which is the working part of the tool, and at least one driving member (52) which is coaxial with the tool. The tool unit is characterised in that that the driving member (52) is connected or connectable to the first side (3a) of the tool, that that side of the peripheral edge portion (54) which is part of said second side (3b) of the tool defines a plane which forms a limit of the, in the axial direction, maximally projecting part of the tool unit (50), and that the driving member has at least one circumferential driving surface (64) provided to be able to cooperate with a power transmission. The invention also relates to a machine comprising a machine body, a tool carrier and at least one tool unit.

Устройство для выполнения крупноразмерного проема в несущей железобетонной или каменной стене

Полезная модель относится к области строительства и может быть использована при капитальном ремонте и реконструкции домов с изменением их объемно-планировочных решений. Устройство для выполнения крупноразмерного проема в несущей железобетонной или каменной стене включает стальную раму усиления, направляющую маятниковой алмазной дисковой пилы, резьбовые соединения. Стальная рама усиления расположена с одной стороны несущей железобетонной или каменной стены и прикреплена к ней с помощью резьбовых соединений, а направляющая маятниковой алмазной дисковой пилы расположена с противоположной стороны несущей железобетонной или каменной стены и прикреплена к стальной раме усиления с помощью резьбовых соединений через сквозные отверстия в несущей железобетонной или каменной стене. Использование устройства для выполнения крупноразмерного проема в несущей железобетонной или каменной стене новой конструкции обеспечивает снижение подводимой мощности алмазного маятникового дискового оборудования для резки ...

ДНИЩЕ

... 1. Днище (100), в частности, для переносного ручного рабочего устройства с двигателем внутреннего сгорания, имеющее по существу ровную поверхность с идущей по периметру наружной кромкой (19) и одно или несколько отверстий (14, 15) с соответствующей кромкой (14a, 15a), ! отличающееся тем, что ! по меньшей мере одна кромка (15a) отверстия (15) имеет выступающий под острым углом (α) элемент (16), служащий отбойником. ! 2. Днище по п.1, отличающееся тем, что элемент (16) выступает под острым углом по меньшей мере над одним отверстием (15). ! 3. Днище по п.1 или 2, отличающееся тем, что острый угол (α) лежит в диапазоне от 80° до 20°, в частности равен 45°. ! 4. Днище по п.1, отличающееся тем, что по меньшей мере идущая по периметру кромка (19) днища (100) и/или кромка (14a, 15a) по меньшей мере одного отверстия (14,15) имеет по меньшей мере частичную отбортовку или подъем. ! 5. Днище по п.1, отличающееся тем, что идущая по периметру кромка (19) днища (100) и кромка по меньшей мере одного отверстия ...

VORRICHTUNG ZUM SCHAERFEN EINES KREISSAEGEBLATTES WAEHREND DER SCHNEIDARBEIT

STONE-CUTTING MACHINE

Apparatus for cutting building materials

Portable apparatus for cutting building material comprises a housing (1) which is divided internally into two compartments (5, 6) separated by a partition (7), one of the compartments containing a motor (8) and the other containing a cutting wheel (18) connected to the motor by a shaft (17) passing through the partition, the housing having a cover (3) which includes an aperture (22) through which the cutting wheel projects and which forms a cutting table 21 for the material to be cut. The material to be cut is positioned by a guide 29 and the cutting wheel is protected by a pivoted casing 23. The material may be cut at an angle by being guided over an inclined part 33 of the cover and a supplementary guide plate 35. ...

PLANING STONELIKE BODIES

... 1449430 Grinding DE BEERS INDUSTRIAL DIAMOND DIVISION Ltd 9 May 1975 [9 May 1974] 19716/75 Heading B3D A method of planing a stone body 10 having a generally flat but rough surface to produce a planed surface, such as a billiard table comprises abrasively cutting a kerf in the body on a plane underlying the rough surface, the portion 12 of the body between the kerf and rough surface being removed. The kerf is cut by a circular saw blade having a disc 3 which is secured to a backing 5 mounted on a substantially vertical spindle 6 and has an annular abrasive element or a series of arcuate elements of diamond grit in a bronze or cobalt matrix. The disc and backing are slightly dished and the plane of the blade is slightly inclined to the surface to be produced. The blade and its drive are mounted on a rail which bridges a pair of rails arranged one each side of the body, and means move the blade and its drive over the body to cut the kerf, the portion 12 between the kerf and the rough surface ...

Cutting apparatus

CUTTING OR SAWING MACHINE AND METHOD FOR WORKING ON AN OBJECT

SCHNEID- BZW. TRENNVORRICHTUNG

GUMPTION BODY CONTAINING TOOLS FOR MACHINE TOOLS

DEVICE FOR SAWING PLATES MATERIALS.

TRENNWERKZEUG

Wave Saw Blade

METHOD OF EXCAVATION AND APPARATUS THEREFOR

Method and arrangement for processing carbon bodies

The present invention concerns a method and an arrangement for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (101) that consists of a mainly circular disc with cutting edges (114) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. The rotating processing tool mounted on a rotating, driven spindle and is guided by guiding elements (110) that can be jets or perforated discs that blows pressurized air at the tool, or rollers (120). With the present invention it is possible to create narrow and deep slots in calcinated carbon bodies in an efficient manner with low tool wear.

STABILIZING COLLAR FOR A CONCRETE SAW BLADE

A stabilizing collar for a concrete saw blade provides a rigid blade structure for smoother cutting operations, particularly in partially cured concrete. A pair of the present collars (10a, 10b) are secured to the blade shaft on each side of the blade, clamping the blade securely therebetween. Each collar has a slightly recessed central area and a raised toroidal rim therearound. Clamping the blade and collar assembly tightly on the shaft, compresses the recessed areas and clamps the rim portions of the collars tightly against the blade at some distance outward from the shaft, thereby providing a rigid assembly and essentially eliminating lateral vibration and flexing of the blade. This enables an otherwise conventional concrete saw to be used for cutting "green" concrete, i. e. relatively soft concrete which has only partially cured.

TILE SAW

A tile saw includes a saw unit having a motor and a saw blade driven by the motor, a table through which the saw blade at least partially protrudes, and a pan positioned underneath the table and including an interior cavity configured to hold a fluid. The interior cavity is defined by a floor and at least one side wall of the pan. The tile saw also includes a first interior wall that extends upward from the floor of the pan and a second interior wall that extends upward from the floor of the pan. The second interior wall is spaced apart from the first interior wall to define a channel into which the saw blade extends.

METHOD AND ARRANGEMENT FOR PROCESSING CARBON BODIES

The present invention concerns a method and an arrangement for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (101) that consists of a mainly circular disc with cutting edges (114) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. The rotating processing tool mounted on a rotating, driven spindle and is guided by guiding elements (110) that can be jets or perforated discs that blows pressurized air at the tool, or rollers (120). With the present invention it is possible to create narrow and deep slots in calcinated carbon bodies in an efficient manner with low tool wear.

CUTTING BLADE AND METHOD FOR PRODUCING A CUTTING BLADE

The present disclosure relates to a cutting blade (3) for a clearing saw (1), the cutting blade (3) having a plurality of teeth (11), at least some of which comprise a leading edge (19), a trailing edge (21), and a point (17) in between the leading and trailing edges. The trailing edge (21) is hardened to a depth in the range 0.02-1.5 mm, and the leading edge (19) is left unhardened. This provides a cutting blade with increased durability and efficiency, that can still be filed manually to remain sharp.

CUTTING AND DUST OR SLURRY COLLECTING ASSEMBLY AND WORKING MACHINE

CUTTING DEVICE AND A METHOD FOR CUTTING A PILE

The object of the invention is a cutting device (100) for cutting a pile, comprising a body part (102), which comprises means (103) for connecting the cutting device to a working machine. The cutting device (100) comprises gripping means (104) attached to the body part (105) to drive the cutting device around the pile to be cut, said gripping means (104) comprising at least two opposite gripping parts (106) to obtain a grip from the pile to be cut to hold on to the pile, to obtain a grip from the pile to be cut to move the pile away, and to release the gripping means (104) from said grips. The cutting device (100) comprises at least two sawing parts (108) arranged to move to a sawing position and to a secure position, and the cutting device (100) comprises sawing means (110) connected to the sawing parts (108) to perform sawing operation when at least one sawing part is in the sawing position, and the cutting device (100) comprises elastic means (114) to adapt to forces, which arises during ...

STONE SLAB SAW

A stone slab saw, a continuous flexible belt (29) is drivingly mounted to a plurality of sheaves (25, 26, 27, 28) rotatably mounted to a frame (24). A motor belt combination (80, 83) is operable to drive one of the sheaves (27) and move the belt (29). The frame (24) is vertically movable by a pair of racks (30, 31) and pinions (34, 35) driven by a motor (38). The belt (29) includes a plurality of abrasive pad holders (62, 63, 64) mounted thereto with each holder including an abrasive pad (61) having an out- wardly facing abrasive surface. A guide bar (39) mounted to the frame (24) i s in tension guiding the belt (29) along a straight path and providing a rigid backing as the belt (29) is driven and lowered through the block of stone (20) cutting a slab therefrom.

SAW FOR CUTTING HARD MATERIALS

A saw for cutting hard materials, and including a guide rail securable to a cut component, a support displaceable along the guide rail, a saw head including a drive for driving a saw blade, a guide element along which the saw head is displaceable within predetermined limits and which is arranged on the support and extends parallel to the drive shaft of the saw blade-driving drive and which extending transverse to a longitudinal extent of the guide rail and transverse to the longitudinal extent of the guide rail, and a quick release device provided between the support and the saw head for connecting the saw head with the support.

Ceramic tile cutting process and device

PORTABLE MACHINE FOR THE CONSTRUCTION MATERIAL CUT

HEAD PORTAMANDRINO

DEVICE TO CROSS, WITHOUT RELEASE OF DUST, OF THE SIMILAR MATTER OR ASBESTOS CEMENT PLATES

MACHINE POUR TAILLER UNE SURFACE PLANE DANS DES BLOCS DE PIERRE

LA PRESENTE INVENTION CONCERNE UNE MACHINE POUR TAILLER UNE SURFACE PLANE DANS DES BLOCS DE PIERRE, NOTAMMENT DE GRANIT ET POUR POLIR CETTE SURFACE. CETTE MACHINE EST CARACTERISEE EN CE QU'ELLE COMPORTE UN PLATEAU PORTE-OUTILS CIRCULAIRE 12 MONTE A ROTATION SUR UN BATI 8, UN DISQUE DE COUPE EXCENTRE 18 MONTE A ROTATION SUR LE PLATEAU 12, EN AVANT DE CELUI-CI ET PARALLELEMENT AU PLATEAU 12, DE MANIERE A DECRIRE UNE ORBITE CIRCULAIRE DONT LE PLAN RECOUPE LE BLOC DE PIERRE SUIVANT LA FACE PLANE 1A A TAILLER, DES MOYENS POUR ENTRAINER LE DISQUE DE COUPE 18 EN ROTATION AUTOUR DE SON AXE YY, ET AU MOINS UNE TETE DE POLISSAGE 21 EXCENTREE MONTEE A ROTATION SUR LE PLATEAU 12, APRES LE DISQUE DE COUPE 18 EN CONSIDERANT LE SENS DE ROTATION DU PLATEAU 12.

CIRCULAR SAW BLADE TO CUT ARTIFICIAL MARBLE

The present invention relates to a circular saw and, more specifically, relates to a circular saw blade to cut artificial marble. The circular saw blade to cut artificial marble in accordance with the present invention includes cutting tips in an outer circumference at constant intervals. The cutting tip is formed of a powder with a diameter of 20-50 micron. A cross sectional shape of the cutting tip is a trapezoid of which two sides are perpendicular to a rotational direction of a body. A length of a short side is longer than a thickness of the body. The long side is positioned in a front end in the rotational direction. A shape of a front surface is a symmetric trapezoid of which two sides are perpendicular to a cut surface. A length of the short side is longer than a thickness of a body. The long side is positioned on a top of the saw blade. The tips are regularly arranged at predetermined intervals in a rotational direction of the saw blade. The circular saw blade to cut artificial ...

PROTECTIVE COVER WITH COOLING FOR CUTTER DISCS

CIRCULAR SAW

L'invention concerne une scie circulaire destinée à couper des matériaux durs, essentiellement de la pierre, qui comprend un boîtier (1) sur lequel l'on a fixé mobile, au moyen de glissières de roulement (3) installées mobiles sur un anneau circulaire intérieur immobile (5), un anneau d'entraînement (2) avec des éléments de coupe (2'), couplé de façon cinématique à un mécanisme d'entraînement et de serrage, ce dernier comprenant au moins deux paires de galets coniques d'entraînement (11). Le diamètre interne D1 de l'anneau d'entraînement (2) est supérieur au diamètre D2 du cercle entourant les guides de roulement (3).

Water-cooled hub for flush-cut concrete saws

This invention relates to an improved hub for diamond-edged concrete saws and, more particularly, to a hub or mandrel of the so-called "flush" type which mounts the saw blade such that the latter can make a cut while lying flush against a planar surface like, for example, a floor or wall. The hub is characterized by an rearwardly-opening donut-shaped annular groove bordering its hollow central core area which receives cooling water delivered thereto from a stationary source in the form of an inlet pipe and then disperses same centrifugally onto the remote surface of the blade mounted thereon by means of passages leading out of the groove and passing through the hub onto the aforementioned remote surface of the blade closely adjacent the central opening therein.

GAS CONCRETE SAW FILTRATION SYSTEM

Режущее устройство и способ резки сваи

Устройство (100) содержит корпус (102), включающий средства (103) для подсоединения режущего устройства к рабочей машине, захватывающие средства (104), прикрепленные к корпусу (105) для приведения режущего устройства в движение вокруг отрезаемой сваи. Указанные захватывающие средства (104) содержат по меньшей мере две противоположные захватывающие части (106), предназначенные для обеспечения захвата отрезаемой сваи для удержания сваи, для обеспечения захвата отрезаемой сваи для удаления сваи и для высвобождения захватывающих средств (104) из указанных захватов. Устройство (100) содержит по меньшей мере две пильные части (108), выполненные с возможностью перемещения в положение распиливания и в безопасное положение, и пильные средства (110), присоединенные к пильным частям (108) для выполнения распиливающей операции, когда по меньшей мере одна пильная часть находится в положении распиливания. Устройство (100) содержит упругие средства (114), предназначенные для приспосабливания к силам, ...

СВЕРЛИЛЬНАЯ КОРОНКА С ЗАМЕНЯЕМЫМ РЕЖУЩИМ УЧАСТКОМ

Изобретение относится к машиностроению и может быть использовано при обработке отверстий в различных материалах. Сверлильная коронка содержит участок стержня сверла с первым элементом вставного соединения, режущий участок со вторым элементом вставного соединения, который образует с первым элементом вставного соединения вставное соединение с наружным элементом вставного соединения и внутренним элементом вставного соединения. Режущий участок имеет несколько участков-фрагментов, выполненных с частью кольцевого участка и по меньшей мере с одним режущим сегментом. Каждая часть кольцевого участка образует вставное соединение с первым элементом вставного соединения и выполнена с возможностью соединения с первым элементом вставного соединения посредством штифтового соединения, включающего по меньшей мере одно сверленое приемное отверстие и по меньшей мере один штифтовой элемент. Указанное по меньшей мере одно сверленое приемное отверстие выполнено с той же глубиной или глубже, чем указанный по ...

ФРЕЗЕРНАЯ УСТАНОВКА ДЛЯ РАЗРАБОТКИ ВЕРТИКАЛЬНЫХ ЩЕЛЕЙ В ГРУНТЕ

Изобретение относится к фрезерной установке для разработки в грунте вертикальных щелей. Фрезерная установка для разработки в грунте вертикальных щелей оснащена щелерезным фрезерным устройством, содержащим раму, первый комплект дисковых фрез и второй комплект дисковых фрез, причем комплекты дисковых фрез для разработки грунтового материала под рамой расположены рядом друг с другом на нижней стороне рамы. Щелерезное фрезерное устройство содержит установочное устройство, с помощью которого первый комплект дисковых фрез может быть установлен с перемещением в наклонном направлении под второй комплект дисковых фрез. Технический результат состоит в обеспечении возможности регулировки положения первого комплекта дисковых фрез относительно рамы и второго комплекта дисковых фрез, обеспечении перекрытия поперечных сечений фрезерования двух комплектов дисковых фрез. 2 н. и 13 з.п. ф-лы, 4 ил.

Устройство для разрезания железобетонных конструкций

Полезная модель относится преимущественно к сфере строительства и может быть применена при капитальном ремонте или реконструкции зданий с изменением объемно-планировочных решений, а также при сносе зданий, особенно в стесненных условиях. При этом зачастую не удается применить крупногабаритную технику для разрезания конструкций или удалить их часть таким образом, чтобы они не изменяли своего проектного положения, и продолжительность выполнения работ существенно не увеличивалась. Устройство включает пространственные леса с верхними и нижними винтовыми домкратами, верхние домкраты имеют универсальную вилку с установленными в ней горизонтальными поддерживающими балками, на лесах с помощью хомутов смонтированы две горизонтальные промежуточные трубы, на которых посредством шарниров с зажимным винтовым устройством зафиксирована с возможностью перемещения направляющая алмазной пилы с режущим диском. Направляющая алмазной пилы дополнительно зафиксирована на разрезаемой железобетонной конструкции ...

РЕЖУЩЕЕ ПОЛОТНО И СПОСОБ ИЗГОТОВЛЕНИЯ ТАКОГО ПОЛОТНА

Изобретение относится к режущему полотну пилы для расчистки и способу его изготовления. Режущее полотно содержит зубья, из которых, по меньшей мере, некоторые содержат переднюю кромку, заднюю кромку и вершину между передней и задней кромками. Задняя кромка подвергнута закалке до глубины в диапазоне 0,02-1,5 мм, а передняя кромка (19) оставлена незакаленной. В результате обеспечивается повышение долговечности и эффективности режущего полотна. 2 н. и 9 з.п. ф-лы, 7 ил.

СПОСОБ УПРАВЛЕНИЯ СИСТЕМОЙ УСТРОЙСТВ ПРИ РАЗДЕЛЕНИИ ЗАГОТОВКИ ВДОЛЬ ЛИНИИ РАЗДЕЛЕНИЯ

АВТОМАТИЧЕСКИЙ СТАНОК ДЛЯ РЕЗКИ ПЛИТКИ

СПОСОБ ОБРАБОТКИ РЕЗАНИЕМ И СПОСОБ ИЗГОТОВЛЕНИЯ ОБРАБОТАННОГО РЕЗАНИЕМ ИЗДЕЛИЯ

УСТРОЙСТВО РЕЗКИ ТВЕРДЫХ МАТЕРИАЛОВ

Изобретение относится к устройствам для обработки твердых материалов. Устройство для резки твердых материалов, преимущественно камня, содержит корпус пилы с проемом с заглушкой для установки и вывода тел качения, приводное кольцо с режущими элементами, подвижно закрепленное на корпусе пилы посредством подвижно установленных тел качения, и затяжной приводной механизм, состоящий из одной пары ведущих конических роликов, которые установлены на корпусе устройства таким образом, что пары ведущих роликов прижимают приводное кольцо, смещают его относительно корпуса пилы и обеспечивают кинематическую связь с приводом устройства. Технический результат - обеспечение процесса резания при высоких скоростях с сохранением долговечности режущих элементов пилы. 8 з.п.ф-лы, 4 ил.

Concrete saw

Presented is a concrete saw for sawing into concrete surfaces to provide expansion slots or joints. The concrete saw has powered front wheels and may optionally have powered front wheels, so that with improved traction the full potential of the motor can be utilized in faster cutting of concrete.

ROTARY STONE CUTTING TOOL AND METHOD

A rotary stone cutting tool and method for making countertops and the like includes a shank shaped for detachable connection with a rotary drive. A cup-shaped cutting blade is mounted on the outer end of the shank, and has a frusto-conical sidewall and an outer marginal edge with axially protruding cutting teeth. A plurality of cutting pads are embedded in the sidewall and protrude radially outwardly therefrom. The blade is advanced through a stone slab with the sidewall oriented generally perpendicular to the face of the stone slab to cut an arcuate portion of an inside corner with reduced waste. 134-. (canceled)35. A method for making stone countertops and the like , comprising:providing a rotary drive adapted for axially rotating an associated tool with respect to a stationary stone slab having at least one generally flat face, and being shiftable between first and second angular positions relative to the face of the stone slab;fabricating a rigid cutting tool shank having an outer end thereof, and an inner end thereof shaped for detachable mounting in the rotary drive and rotating axially therewith;operably connecting a flat circularly-shaped saw blade with the shank for rotation therewith;fabricating a cup-shaped cutting blade configured to make an arcuate cut through the stone slab when the rotary drive is in the second angular position, with a frusto-conical sidewall which is inclined radially outwardly from the shank and includes an outer marginal edge with a plurality of axially protruding cutting teeth, and a plurality of cutting pads embedded in the sidewall and protruding radially outwardly from an outside surface of the sidewall and radially inwardly from an inside surface of the sidewall;fixedly mounting the cup-shaped cutting blade on the outer end of the shank;detachably mounting the inner end of the shank in the rotary drive for rotation therewith;shifting the rotary drive to the first angular position and cutting two mutually angled straight cuts ...

BATTERY POWERED CONCRETE SAW

A battery operated concrete saw system () includes an alternating current electric saw () and a lithium based battery pack () including a plurality of batteries () connected in series to power the saw through an inverter () that changes the direct current from the battery pack to alternating current that powers the saw. 1a frame having a pair of rear wheels and a pair of front wheels for facilitating movement of the saw to different locations for use and for movement during use performing a cutting operation;an alternating current electric motor mounted by the frame;a pair of saw arbors respectively mounted on the frame for rotation on opposite lateral sides of the frame forward of the pair of front wheels, and the saw arbors having a rotational connection to the electric motor to provide rotational driving thereof;an actuator for moving the front wheel upwardly and downwardly with respect to the frame to pivot the frame about the rear wheels between an upper idle position and a lower use position that permits cutting of concrete with a saw blade mounted on one of the arbors;a lithium based battery pack including a plurality of batteries connected in series to provide at least 80 volts for powering the saw; andan inverter for connecting the lithium based batter pack and the alternating current electric motor to change direct current from the battery pack to alternating current that powers the saw with at least 80 volts.. A battery power concrete saw comprising: This application is a divisional of U.S. patent application Ser. No. 12/713,293 filed on Feb. 26, 2010 by Francis M. Gobright IV and titled BATTERY POWERED CONCRETE SAW SYSTEM.This invention relates to a battery powered concrete saw system for cutting concrete, asphalt and the like, etc.Saws for cutting concrete, asphalt and the like, etc. are conventionally electrically powered or powered by an internal combustion engine that utilizes gasoline or diesel fuel, the latter of which cannot be used indoors due to ...

CONCRETE SAW

A concrete saw having a geared assembly for rotating a cutting blade is described. The saw utilizes a longitudinally oriented engine for rotating the blade. Various additional features and improvements are described including a particular belt tensioner assembly, an indicator and control system for cutting blade depth, a handle adjustment and locking system, and provisions for control of blade water are described. 1. A concrete saw including a frame , a rotary power source , and a belt tensioning assembly , the assembly comprising:a blade shaft drive assembly including at least one lower rotatable sheave in operable engagement with a cutting blade;a positionable drive shaft assembly including at least one upper rotatable sheave in operable engagement with the rotary power source;at least one belt extending between and in operable engagement with the lower sheave and the upper sheave such that rotation of the upper sheave imparts rotation to the lower sheave; andan adjusting assembly having provisions for selectively changing the position of the drive shaft assembly relative to the blade shaft drive assembly thereby changing the distance between the lower sheave and the upper sheave.2. The concrete saw of claim 1 , wherein the belt is a V-belt.3. The concrete saw of wherein the rotary power source is an internal combustion engine and the drive shaft assembly is engaged with and supported by the engine.4. The concrete saw of wherein the engine is supported by at least one front engine mount and at least one pivotable rear engine mount claim 3 , the provisions of the adjusting assembly including:a threaded member extending between the front engine mount and the frame, wherein rotation of the threaded member alters the position of the engine, and the drive shaft assembly engaged thereto, in relation to the frame to thereby change the distance between the lower sheave and the upper sheave.5. The concrete saw of wherein the front engine mount includes a laterally ...

System and Method for Concrete Slab Connection

Systems and methods of transferring loads between adjacent cast-in-place slabs, such as concrete slabs, and for accurately positioning dowels between adjacent sections of slabs are provided. A generally planar plate-type dowel is used which may be positioned within a cutaway in a preexisting slab of concrete. The dowel is shaped to generally conform to the shape of the cutaway, which is made by a saw blade. Once the dowel is positioned within the preexisting slab, a new slab is poured adjacent the preexisting slab. Rubber seals are included on the edges of the dowels to provide spacing or a gap between the dowel and the preexisting slab to allow for lateral independent movement of the adjacent slabs, and to prevent concrete from the newly poured second slab from entering into the gap. A saw unit for making a generally planar cut horizontally into an edge of a hardened concrete slab is also provided. 1. An article of manufacture comprising at least first and second adjacent cast-in-place concrete slabs , the slabs being cast-in-place slabs in that the slabs are cast in a place such as on ground , said article of manufacture comprising:a first poured cast-in-place hardened concrete slab formed in the place such as on the ground, said first concrete slab having a substantially horizontal upper surface, a lower surface resting in said place such as on said ground, and a substantially upright edge formed between said upper and lower surfaces of said first poured concrete slab,multiple laterally aligned substantially horizontal transverse precut slots formed along said upright edge of said first poured concrete slab,multiple rigid dowel plates having first and second unitary portions, each of said first portions of said dowel plates being received within substantially each of said precut slots of said first poured concrete slab, said second portions projecting laterally from said upright edge,a second poured cast-in-place hardened concrete slab having been poured and ...

Tile Saw with Free-Rolling Wheels

A saw system in one embodiment includes a base, a work support surface member supported by the base and including a work piece support surface defining a horizontal work piece support plane, and a plurality of wheels, each of the plurality of wheels engaged with at least one of the base and the work support surface member, wherein none of the plurality of wheels is attached to either the base or the work support surface member.

Blade guard for a saw

A blade guard for a circular saw blade. The blade guard includes at least two pieces coupled together. The blade guard also includes at least one bottom plate having a slot formed therein for accommodating the circular saw blade and at least one top cover. Additionally, the blade guard includes a plurality of fastening rods for coupling the bottom plate with the top cover, the plurality of fastening rods further configured to secure the at least two pieces to the at least one bottom plate and the at least one top cover.

METHOD AND APPARATUS FOR TILE CUTTING

A method and apparatus for cutting rigid, brittle articles such as tile used as a building material is improved by the capability to make both straight and curved cuts in tile on a single machine. The machine has both circular and plunge cutting tools and a table for moving the tile in both curved and straight lines in relation to the cutting tool, thereby achieving both curved and straight cuts. 1. In a method for cutting articles with a power saw; said power saw having a table and a saw , the improvement comprising;providing said table with both linear and rotary stages;providing said saw with a rotatable holder;fitting said saw with a circular blade;rotating said rotatable holder to position said circular blade perpendicular to said article and parallel to said linear stage;moving said article with said linear stage thereby intersecting said article with said circular blade and making a straight cut;fitting said saw with a plunge cutter;rotating said rotatable holder to position said plunge cutter perpendicular to a rotation direction of said rotary stage and intersecting said article; andmoving said article with said rotary stage and intersecting said article with said plunge cutter and making a curved cut.2. In an apparatus for cutting articles with a power saw; said power saw having a table and a saw , the improvement comprising;a linear stage with a rotary stage attached so that said article placed upon said rotary stage can be moved linearly or rotatably or both under said saw;a rotatable saw holder that permits said saw to position a circular saw blade fitted to said saw in a direction parallel to the direction of the linear stage and to position a plunge cutter fitted to said saw perpendicularly to a rotation direction of the rotary stage. This application claims the benefit of U.S. Provisional Application No. 61/393,774, filed 15 Oct. 2010.This invention is an improved method and apparatus for cutting rigid, brittle articles such as tile used as a ...

Portable cutting machine

Front feet are provided at a lower part of a cutting-machine main body via a foot holder. Furthermore, a slider positioned on a front side relative to the front feet is provided at the lower part. When a workpiece to be cut is to be cut by a blade, the cutting-machine main body is tilted so as to let the blade go down. When the cutting-machine main body is tilted, a state where the front feet are in contact with the workpiece is switched to a state where the slider is in contact with the workpiece. Then, by moving the cutting-machine main body forward while sliding the slider on the workpiece, the workpiece is cut by the blade. In the cutting operation, the front feet can get away from the workpiece. Therefore, damage of the front feet can be prevented, and the running cost can be suppressed.

DEVICE FOR CUTTING A SUBSTRATE AND METHOD FOR CONTROLLING SUCH A CUTTING DEVICE

A device for cutting a substrate along a cutting line is disclosed. The device includes a saw unit with a saw blade, which can be rotated around an axis of rotation, a guide carriage for moving the saw unit along a guide rail, and a control device for controlling the saw unit and the guide carriage. A marking device is provided for marking an end point of the cutting line. 1. A device for cutting a substrate along a cutting line , comprising:a saw unit with a saw blade, wherein the saw blade is rotatable around an axis of rotation;a guide carriage, wherein the saw unit is movable by the guide carriage along a guide rail;a control device, wherein the saw unit and the guide carriage are controllable by the control device; anda marking device associated with the guide rail, wherein an end point of the cutting line is markable by the marking device.2. The device according to claim 1 , further comprising a second marking device associated with the guide rail claim 1 , wherein a second end point of the cutting line is markable by the second marking device.3. The device according to claim 1 , wherein the marking device has an optical marking element claim 1 , a signal generator claim 1 , and a detector device claim 1 , wherein the end point is optically markable by the optical marking element claim 1 , wherein a position signal corresponding to a position of the end point or a position of a reference point which is arranged at a defined distance from the end point is emittable by the signal generator claim 1 , and wherein the position signal is receivable by the detector device.4. The device according to claim 3 , wherein the detector device is connectable to the control device and wherein information corresponding to the position signal is transmittable to the control device by the detector device.5. The device according to claim 2 , wherein the marking device and the second marking device have a common detector device.6. The device according to claim 3 , wherein the ...

Power cutter

A power cutter powered by a single cylinder internal combustion engine, the power cutter including: a tool unit having at least one tool, which can be rotated about an axis of rotation; a drive unit including an engine, the engine including an engine cylinder having a cylinder bore centerline, a piston, a crankshaft with a crankshaft axis of rotation and a flywheel, the crankshaft running in a counter clockwise direction as seen towards the flywheel; a cutter arm attached to the drive unit in its inner end and its outer end carrying the tool unit, a centerline of the cutter arm essentially follows a connection line between the axis of rotation of the tool and the axis of rotation of the crankshaft.

Power cutter

A power cutter including a tool unit, an internal combustion engine having an engine cylinder with cylinder bore having a center line and an exhaust port formed in the engine cylinder, a crankshaft, crankcase and an assembly for supplying air and fuel to the engine, and a muffler accommodated in a close and side by side relationship with the engine cylinder, the muffler includes an exhaust gas inlet and an exhaust gas outlet, such that the exhaust gas inlet is adapted to receive the exhaust gases from an exhaust port of the engine cylinder, wherein the exhaust gas inlet is provided on the top or bottom or local side of the muffler.

HYBRID CONCRETE SAW

A hybrid concrete saw includes a saw blade, an internal combustion engine having an output shaft operably connected to the saw blade, and an electric motor connectable to a battery for receiving power therefrom and having an output shaft operably connected to the saw blade. A transmission is connected to the output shaft of each of the engine and the electric motor and the saw blade. A clutch selectively decouples one of the engine and the electric motor from the transmission. A controller controls operation of the engine and the electric motor. The concrete saw is operable in a first mode where the saw blade is driven solely by the engine, a second mode where the saw blade is driven solely by the electric motor, and a third mode where the saw blade is driven by both the engine and the electric motor. 1. A hybrid concrete saw comprising:a generally rectangular frame having a front end, a read end and a longitudinal length, the frame having a pair of rear wheels and a pair of front wheels for facilitating movement of the saw;a saw blade rotatably mounted to the frame and configured to be driven;an internal combustion engine mounted to the frame and having a rotational output shaft operably connected to the saw blade for driving the saw blade;an electric motor mounted to the frame and operably connectable to a battery for receiving power therefrom, the electric motor having a rotational output shaft operably connected to the saw blade for driving the saw blade;a transmission operably connected to the output shaft of each of the engine and the electric motor and the saw blade, the transmission having a dutch adapted to selective decouple one of the engine and the electric motor from the transmission; anda controller configured to control operation of the engine and the electric motor,wherein the concrete saw is operable in a first mode where the saw blade is driven solely by the engine and the concrete saw is operable in a second mode where the saw blade is driven ...

System and Method for Concrete Slab Connection

Systems and methods of transferring loads between adjacent cast-in-place slabs, such as concrete slabs, and for accurately positioning dowels between adjacent sections of slabs are provided. A generally planar plate-type dowel is used which may be positioned within a cutaway in a preexisting slab of concrete. The dowel is shaped to generally conform to the shape of the cutaway, which is made by a saw blade. Once the dowel is positioned within the preexisting slab, a new slab is poured adjacent the preexisting slab. Rubber seals are included on the edges of the dowels to provide spacing or a gap between the dowel and the preexisting slab to allow for lateral independent movement of the adjacent slabs, and to prevent concrete from the newly poured second slab from entering into the gap. A saw unit for making a generally planar cut horizontally into an edge of a hardened concrete slab is also provided.

Drill bit with a replaceable cutting portion

A drill bit rotatable about a rotation axis is disclosed. The drill bit has a first drill bit portion configured as a cutting portion and has an annular portion connected at one end to one or more cutting elements and, at another end, a first connection device. The drill bit has a second drill bit portion configured as a drilling shank portion and has a cylindrical drill shaft, which on one end has a second connection device. The first and second connection devices in a connected state form a detachable connection, and a force transmission and torque transmission occur from the drill shaft portion to the cutting portion. The cutting portion has a third connection device, and the drill shaft portion has a fourth connection device. The third and fourth connection devices in a connected state form in an axial direction parallel to the axis a form-fitting connection.

Drill Ring for a Core Drill Bit

A drill ring for a cylindrical core drill bit is disclosed. The drill ring includes at least two ring segments which are constructed from a sintered powder mixture and diamond particles. The diamond particles are arranged on ablation tracks in a plane perpendicular to the cylinder axis and the ring segments are connected to each other on their lateral edges. 113.-. (canceled)14. A drill ring for a cylindrical core drill bit , comprising:at least two ring segments constructed from a sintered powder mixture and diamond particles;wherein the diamond particles are respectively disposed on circular ablation tracks in a plane perpendicular to an axis of the cylindrical core drill bit;wherein the at least two ring segments are connected to each other at respective side edges.15. The drill ring according to claim 14 , wherein the drill ring includes n≧1 first ring segments and n second ring segments and wherein the first and the second ring segments are alternately disposed one behind the other along a circumferential direction of the drill ring.16. The drill ring according to claim 15 , wherein the first ring segments have a diamond-coated area and the second ring segments have a diamond-free area on a respective outer side.17. The drill ring according to claim 15 , wherein the first ring segments are constructed from a sintered first powder mixture and first diamond particles and wherein the second ring segments are constructed from a sintered second powder mixture and second diamond particles.18. The drill ring according to claim 17 , wherein the sintered first powder mixture and the sintered second powder mixture are identical.19. The drill ring according to claim 17 , wherein the first diamond particles and the second diamond particles have a same diamond distribution and a same mean diamond diameter.20. The drill ring according to claim 17 , wherein the first diamond particles are disposed in the plane perpendicular to the axis on a first number of first ablation ...

SUBSTRATE CUTTING DEVICE AND SUBSTRATE CUTTING METHOD

A substrate cutting device includes: a first cutter including a plurality of first rotary blades; a second cutter including a plurality of second rotary blades; a first rotation drive unit for rotationally driving the first cutter; a second rotation drive unit for rotationally driving the second cutter; a cutter support unit; and a phase adjustment unit. The cutter support unit supports the first cutter and the second cutter such that the first and second cutters are radially opposed to each other so that rotation axes thereof are parallel to each other. The phase adjustment unit adjusts a phase of at least one of the first cutter and the second cutter such that each of the second rotary blades is located between two adjacent first rotary blades in an opposing area in which the first cutter and the second cutter are opposed to each other. 1. A substrate cutting device for cutting a substrate from one surface and the other surface of the substrate , the substrate cutting device comprising:a first cutter for cutting the substrate from the one surface, the first cutter including a plurality of first rotary blades;a second cutter for cutting the substrate from the other surface, the second cutter including a plurality of second rotary blades;a first rotation drive unit for rotationally driving the first cutter;a second rotation drive unit for rotationally driving the second cutter;a cutter support unit for supporting the first cutter and the second cutter in such a manner that the first cutter and the second cutter are radially opposed to each other so that rotation axes of the first cutter and the second cutter are parallel to each other; anda phase adjustment unit for adjusting a phase of at least one of the first cutter and the second cutter in such a manner that each of the second rotary blades is located between two adjacent first rotary blades in an opposing area in which the first cutter and the second cutter are opposed to each other.2. The substrate cutting ...

POWERED SAW INCLUDING DUST CAPTURE APPARATUS

A novel cutting method and apparatus includes a cutting blade adapted to consistently and easily form a desirable kerf in a concrete substrate while capturing substantially all resulting concrete dust. 2. A circular saw apparatus as defined in wherein said longitudinal axis comprises a substantially linear longitudinal axis.3. A circular saw apparatus as defined in wherein said plurality of wheels comprises four wheels.4. A circular saw apparatus as defined in claim 1 , further comprising third and fourth wheels claim 1 , said third wheel and said fourth wheel being disposed in proximity to said forward edge.5. A circular saw apparatus as defined in wherein each said respective axes of rotation is disposed substantially parallel to said upper surface region.6. A circular saw apparatus as defined in wherein said hose coupling comprises a fitting claim 1 , said fitting having an internal channel therewithin claim 1 , said internal channel communicating between said blade box portion and said hose coupling tube.7. A circular saw apparatus as defined in wherein said hose coupling tube includes an external circumferential surface region adapted to support an internal surface region of a vacuum tube.8. A circular saw apparatus as defined in wherein said hose coupling tube comprises a hose coupling tube having a substantially circular cross-section.9. A circular saw apparatus as defined in further comprising a support bracket claim 1 , said support bracket being coupled to said chassis claim 1 , said support bracket further including an aperture for receiving a portion of said hose coupling tube therewithin claim 1 , so as to mechanically support said hose coupling tube.10. A circular saw apparatus as defined in wherein a portion of said hose coupling tube is disposed above said one wheel. The present application is a continuation-in-part of U.S. patent application Ser. No. 14/853,852 , filed on Sep. 14, 2015, which in turn is a continuation of U.S. patent application Ser. ...

POWERED SAW INCLUDING DUST CAPTURE APPARATUS

A novel cutting method and apparatus includes a cutting blade adapted to consistently and easily form a desirable kerf in a concrete substrate while capturing substantially all resulting concrete dust. 1. A method of cutting a substrate comprising:advancing a portion of a saw blade into a kerf in a surface of a substrate at an entry point;advancing said portion of said saw blade through said kerf, substantially without contacting said substrate, to contact said substrate adjacent an exit point where said portion of said saw blade exits said kerf and relatively remote from said entry point;advancing said portion of said saw blade into a vacuum manifold, said vacuum manifold being disposed relatively proximate to said exit point and distal to said entry point;advancing said portion of said saw blade through a cavity within said vacuum manifold, said cavity defined by a generally circular cylindrical internal surface of said vacuum manifold, said cavity having a cavity longitudinal axis disposed in generally parallel spaced relation to an axis of rotation of said saw blade and transverse to a motion of said portion of said saw blade through said cavity, said cavity having a radius normal to said cavity longitudinal axis, said cavity radius being substantially smaller than a radius of said saw blade;withdrawing ambient air through said cavity and through a coupling portion coupled to said cavity, said coupling portion having a coupler longitudinal axis, said coupler longitudinal axis defining a passage angle with said cavity longitudinal axis, said passage angle having a value of between at least about 0° and at most about 20°, whereby said withdrawing ambient air tends to form a vortex in said ambient air and to effectively remove sawing detritus from a region adjacent said exit point.2. A method of cutting a substrate as defined in wherein said passage angle comprises a vertical component substantially normal to said surface of said substrate and a horizontal ...

TILE CUTTING MACHINE

A tile cutting machine comprises a base, a motor accommodated in the base, a blade driven to rotate by the motor, and a working table supported on the base, wherein the working table comprises a fixed working table fixedly mounted to the base. A movable working table is slidably mounted to the fixed working table in a sliding direction parallel to a plane of the blade. The movable working table comprises a pivoting plate pivotally mounted to the movable working table about a pivoting axis parallel to the plane where the blade is located and a fence assembly mounted to the movable working table. The tile cutting machine can effectively enhance the ability to produce straight and/or square cuts. 1. A tile cutting machine , comprising:a base;a motor accommodated in the base;a blade rotatably driven by the motor; anda working table supported on the base,wherein the working table assembly comprises:a fixed working table fixedly mounted to the base;a movable working table slidably mounted to the fixed working table, the sliding direction of which is parallel to a plane where the blade is located, the movable working table comprising a pivotal plate pivotally mounted to the movable working table about a pivoting axis parallel to the plane where the blade is located; anda fence assembly mounted to the movable working table.2. The tile cutting machine according to claim 1 , wherein the fixed working table covers the whole base and has an elongated opening at the middle thereof claim 1 , and the blade extends out from the elongated opening and is partially positioned above the fixed working table.3. The tile cutting machine according to claim 2 , wherein the fixed working table comprises a top surface at one side of the blade which defines a first supporting surface for supporting a workpiece to be cut claim 2 , and the fixed working table comprises a first concave portion at the other side of the blade which is configured to accommodate the movable working table claim 2 , ...

ADAPTIVE TRANSMISSION MECHANISM

A method to control a power tool includes the following steps: ascertaining a first rotational speed of the transmission in a first gear; ascertaining a first rotational speed of the motor when the transmission has been put into a first gear; ascertaining the selection of a first gear on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; selecting the no-load state; ascertaining the selected no-load state on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; adapting the rotational speed of the motor to a second gear on the basis of a ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; and selecting a second gear. 14-. (canceled)5. A method to control a power tool including a motor as a drive for the power tool; a controller; a transmission having at least a first gear , a second gear and a no-load state; a tool; a first sensor to detect a rotational speed of at least one component of the transmission; and a second sensor to detect a motor rotational speed of the motor , the method comprising the following steps:ascertaining a first rotational speed of the at least one component of the transmission when the transmission has been put into the first gear;ascertaining a first rotational speed of the motor when the transmission has been put into the first gear,ascertaining a selection of the first gear on the basis of a first prescribed ratio of the first rotational speed of the at least one component of the transmission and of the first rotational speed of the motor on the basis of a look-up table;selecting the no-load state of the transmission;ascertaining the selected no-load state on the basis of a second prescribed ratio of a second rotational speed of the at least one component of the transmission and of a second rotational ...

CUTTING APPARATUS

A controller of a cutting apparatus includes: a storage section configured to preliminarily store as a threshold an arbitrary value based on a load current value of a motor detected when a cutting blade is rotated at a predetermined rotational speed while supplying a predetermined quantity of cutting water in a state in which a cutting water supply nozzle is positioned in an appropriate position; and a judgment section configured to judge normality or abnormality according to the result of comparison between a load current value detected when the cutting blade is rotated at the predetermined rotational speed while supplying the predetermined quantity of cutting water and the threshold stored in the storage section. 1. A cutting apparatus comprising:cutting means which includes a spindle supported in a rotatable manner, a motor for rotationally driving the spindle, a cutting blade mounted to a tip portion of the spindle, and a cutting water supply nozzle for supplying cutting water to the cutting blade;load current value detecting means for detecting a load current value of the motor; andcontrol means for controlling the cutting means and the load current value detecting means,wherein the control means includes:a storage section configured to preliminarily store as a threshold an arbitrary value based on a load current value detected by the load current value detecting means when the cutting blade is rotated at a predetermined rotational speed while supplying a predetermined quantity of cutting water in a state in which the cutting water supply nozzle is positioned in an appropriate position; anda judgment section configured to judge normality or abnormality according to a result of comparison between a load current value detected by the load current value detecting means when the cutting blade is rotated at the predetermined rotational speed while supplying the predetermined quantity of cutting water and the threshold stored in the storage section.2. The cutting ...

CORNER SAW

A cutting apparatus for cutting corner pieces formed of stone or other materials for use as building faces or for cutting flat pieces is disclosed herein. The cutting apparatus includes a frame with a first and a second conveyor operatively attached to the frame. The first and the second conveyors are configured to carry a workpiece from a first end of the frame to the second end of the frame. The first conveyor is disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus. The second conveyor is disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, wherein the second conveyor is positioned perpendicularly to the first conveyor so as to form a V-shaped channel therewith. The cutting apparatus further includes a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor and a second cutting blade operatively attached to the frame and positioned generally parallel to the second conveyor. 1. A cutting apparatus comprising:a frame including a first end and a second end;a first conveyor operatively attached to the frame, the first conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the first conveyor disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus;a second conveyor operatively attached to the frame, the second conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the second conveyor disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, the second conveyor positioned perpendicularly to the first conveyor so as to form a V-shaped channel with the first conveyor;a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor; anda second cutting blade operatively attached to the frame and positioned generally ...

CONCAVE CUTTING TABLE OF CERAMIC SAW

A ceramic saw includes a sliding cutting table including two intermediate islands, a flat, left portion to the left of the intermediate islands, and a flat, right portion to the right of the intermediate islands; a first longitudinal groove inclined and disposed between the left portion and the intermediate islands, a second longitudinal groove between the intermediate islands, and a third longitudinal groove inclined and disposed between the right portion and the intermediate islands; a plurality of inclined, transverse grooves across the left portion, the right portion, and the intermediate islands; a rectangular groove formed along four edges of the cutting table; a first drain disposed on the first longitudinal groove, a second drain disposed on the second longitudinal groove, and a third drain disposed on the third longitudinal groove; and the first, second and third longitudinal grooves, the transverse grooves, and the rectangular groove communicate with one another. 1. A saw for cutting a workpiece , comprising:a rectangular cutting table including two parallel sets of a plurality of rollers disposed on a bottom;a gauge strip formed with a front end of the cutting table;a removable tray under the cutting table;a rectangular frame including two parallel rails on a top with the sets of rollers rotatably disposed thereon, and a wheeled folding leg assembly disposed under the removable tray; anda cutting head assembly disposed above the cutting table and secured to the frame, the cutting head assembly including a circular saw blade, an electric motor for driving the saw blade, and a nozzle;wherein the cutting table is slidably mounted on the parallel rails and includes:two intermediate islands, a flat, left portion disposed to the left of the intermediate islands, and a flat, right portion disposed to the right of the intermediate islands;a first longitudinal groove inclined and disposed between the flat, left portion and the intermediate islands, a second ...

Cooling System For Concrete Saw

A concrete saw includes a generally rectangular frame having a front end, a rear end and a longitudinal length. An engine is supported by the frame. The engine includes a rotational output shaft aligned generally transverse to the longitudinal length of the frame. A saw blade is rotatably connected to the frame and driven by the output shaft of the engine. A cooling system is mounted to a front part of the engine. The cooling system includes a radiator and a cooling fan. The cooling fan is driven by a fan drive assembly having a drive shaft configured as a power take-off to be continuously driven by the engine. 1. A concrete saw comprising:a frame having a front end, a rear end and a longitudinal length;an engine supported by the frame and including a drive shaft aligned transverse to the longitudinal length of the frame;a saw blade rotatably connected to the frame and driven by the drive shaft;a cooling system including a radiator and a cooling fan mounted to and facing a front part of the engine; anda fan drive assembly for driving the cooling fan, the fan drive assembly mounted to the front part of the engine and having an input shaft configured as a power take-off to be continuously driven by the engine.2. The concrete saw of claim 1 , wherein the fan drive assembly includes a drive housing including a first part and a second part extending substantially perpendicularly from the first part.3. The concrete saw of claim 2 , wherein the input shaft has a proximal end portion extending outwardly from the first part to be driven by operation of the engine and a distal end portion housed in the first part of the drive housing.4. The concrete saw of claim 3 , wherein the fan drive assembly includes a separate output shaft operably connected to the input shaft claim 3 , the output shaft driving the cooling fan.5. The concrete saw of claim 4 , wherein the output shaft of the fan drive assembly has a proximal end portion housed in the second part of the drive housing and ...

CUTTING BLADE APPARATUS AND METHODS

A cutting blade includes a blade body with one or more cutting elements positioned along its periphery. The elements preferably are keyed to the blade, to help provide secure mounting onto the blade, and include a poly-chrystalized diamond cutting surface. 1. A cutting blade assembly including:a blade having a plurality of keyed mounting areas at its periphery, and a plurality of cutting elements correspondingly keyed and thereby mounted to the blade.2. The blade of claim 1 , further includingat least one of the cutting elements including a poly-chrystalized diamond cutting surface.3. A method of fabricating a blade as described in claim 1 , including the steps of:providing said blade;providing said plurality of cutting elements; andoperatively assembling at least one of said cutting elements with at least one of said correspondingly keyed mounting areas on said blade.4. The method of claim 3 , in which said step of operatively assembling includes sintering said cutting element into its desired position relative to said mounting area.5. Roadway cutting apparatus claim 3 , including:a road having an upper surface, anda saw blade configured to cut into the road surface, said saw blade having at least one contact surface positioned to confront the road surface during a cutting operation, the contact surface incorporating poly-carbonate diamond material6. The apparatus of claim 5 , further including a motor to power the saw blade in a cutting operation.7. The apparatus of claim 5 , in which the poly-carbonate diamond material is formed as a layer on one surface of a replaceable element claim 5 , and the replaceable element is keyed to operatively interfit with a corresponding structure on the saw blade. The present invention is described herein with reference to the accompanying Figures, which illustrate some of the many embodiments in and by which the invention may be practiced. Generally in those Figures and references, similar and/or identical reference numerals ...

SAW CART

A cart for carrying a cut-off saw having a saw blade. The cart includes a frame with upper and lower portions, a wheel arm pivotably coupled to the lower portion about a first axis, and a rear wheel assembly coaxial with the first axis and coupled to the frame and the wheel arm. The cart includes a front wheel coupled to an end of the wheel arm opposite the rear wheel assembly, an adjustment lever pivotably coupled to the upper portion about a second axis, and a link having a first end pivotably coupled to the adjustment lever and spaced from the second axis, and a second end pivotably coupled to the wheel arm between the first axis and the front wheel. Pivoting the adjustment lever about the second axis pivots the wheel arm about the first axis to adjust a vertical position of the front wheel relative to the upper portion. 1. A cart for carrying a cut-off saw having a saw blade , the cart comprising:a frame including an upper portion and a lower portion;a wheel arm pivotably coupled to the lower portion of the frame about a first axis;a rear wheel assembly coaxial with the first axis and coupled to the frame and the wheel arm;a front wheel coupled to an end of the wheel arm opposite the rear wheel assembly;an adjustment lever pivotably coupled to the upper portion of the frame about a second axis; anda link having a first end pivotably coupled to the adjustment lever at a location spaced from the second axis, and a second end pivotably coupled to the wheel arm at a location between the first axis and the front wheel;wherein pivoting the adjustment lever about the second axis pivots the wheel arm about the first axis to adjust a vertical position of the front wheel relative to the upper portion of the frame, and therefore a vertical position of the saw blade relative to a support surface of the cart.2. The cart of claim 1 , wherein the front wheel moves relative to the upper portion of the frame along an arc having an origin intersected by the first axis.3. The cart ...

SAWCUT MACHINE FOR SIDEWALKS

Disclosed is a machine for forming saw cuts into sidewalk concrete slabs, the machine comprising a frame, rubber tracks attached to the underside of the frame to self-propel the machine in a travel direction along a sidewalk during use, and a cutting assembly mounted to the frame. The cutting assembly comprises a saw for forming saw cuts, a linear actuator for moving the saw at a depth into the sidewalk, and a screw drive motor to move the saw to form the saw cut in a direction perpendicular to the travel direction. While road repair machinery has the luxury of more space, machines for sidewalks are smaller and tighter. The machine in accordance with the teachings of this invention uses a newly designed cutting assembly to keep the size of the machine useable for sawcuts in sidewalks. 1. A machine for forming saw cuts into sidewalk concrete slabs , the machine comprising:a frame;rubber tracks attached to the underside of the frame to self-propel the machine in a travel direction along a sidewalk during use; and a saw for forming saw cuts;', 'a linear actuator for moving the saw at a depth into the sidewalk; and', 'a screw drive motor to move the saw to form the saw cut in a direction perpendicular to the travel direction., 'a cutting assembly mounted to the frame, the cutting assembly comprising2. The machine of claim 1 , wherein the screw drive motor is connected to a drive screw such that they turn in unison.3. The machine of claim 1 , further comprising a depth control assembly using a PLC for controlling the linear actuator.4. The machine of claim 1 , further comprising a travel control assembly for controlling the travel of the saw while the saw is forming the saw cut.5. The machine of claim 4 , wherein the travel control assembly comprises a switch wheel wherein if the switch wheel drops off the edge of the sidewalk claim 4 , the saw is triggered to stop forming the saw cut.6. The machine of claim 1 , further comprising a vacuum with a cyclone separator to ...

Concrete saw

A concrete saw having a geared assembly for rotating a cutting blade is described. The saw utilizes a longitudinally oriented engine for rotating the blade. Various additional features and improvements are described including a particular belt tensioner assembly, an indicator and control system for cutting blade depth, a handle adjustment and locking system, and provisions for control of blade water are described.

CONCRETE SAW RACK HAVING SLOT TO ACCOMMODATE BLADE

A transportation system for a concrete saw includes an opening in a support surface for the concrete saw. The opening in the support surface is positioned and sized to receive the saw blade while the concrete saw is supported by the support surface. The transportation system is adapted to be loaded on a transporter for transportation of the construction equipment. 1. A transportation system and concrete saw combination comprising: at least one wheel for rolling over a concrete surface to be cut, and', 'a saw blade extending below the at least one wheel and adapted to cut the concrete surface; and, 'a concrete saw including a frame including a support surface, and', 'an opening in the support surface;, 'a transportation system includingwherein the support surface is adapted to support the concrete saw with the wheel on the support surface;wherein the opening in the support surface is positioned and sized to receive the saw blade while the concrete saw is supported by the support surface; andwherein the transportation system is adapted to be loaded on a transporter for transportation of the construction equipment.2. The transportation system and concrete saw combination of claim 1 , wherein the at least one wheel of the concrete saw includes a smooth claim 1 , hard wheel that supports the saw during operation claim 1 , the transportation system further comprising:a pad supported by the support surface of the frame and supporting the smooth wheel of the construction equipment, the pad absorbing a dynamic load arising during transport.3. The transportation system and concrete saw combination of claim 1 , further comprising: a rigid guard mounted to the frame along at least a portion of the opening and extending upwardly from the support surface claim 1 , the rigid guard shielding the saw blade during transport.4. The transportation system and concrete saw combination of claim 1 , further comprising: a restraining mechanism adapted to limit movement of the concrete saw ...

MACHINING SEGMENT FOR THE DRY MACHINING OF CONCRETE MATERIALS

A machining segment for a machining tool which is rotatable in a direction of rotation about an axis of rotation includes an underside where the machining segment is connectable to a basic body of the machining tool by the underside. The machining segment has a machining zone of a matrix material and a plurality of first hard material particles that are disposed in the matrix material in accordance with a defined particle pattern. An upper side of the machining segment, opposite from the underside, is divided into a plurality of machining regions, which include respective ones of the plurality of first hard material particles, and a plurality of matrix regions which are built up from the matrix material. At least one of the plurality of machining regions has with respect to an adjacent matrix region a projection that is greater than 400 μm. 112.-. (canceled)13. A machining segment for a machining tool which is rotatable in a direction of rotation about an axis of rotation , comprising:an underside, wherein the machining segment is connectable to a basic body of the machining tool by the underside;a machining zone comprising a matrix material and a plurality of first hard material particles, wherein the plurality of first hard material particles are disposed in the matrix material in accordance with a defined particle pattern; andan upper side, wherein the upper side is opposite from the underside and wherein the upper side is divided into a plurality of machining regions, which include respective ones of the plurality of first hard material particles, and a plurality of matrix regions which are built up from the matrix material;wherein at least one of the plurality of machining regions has with respect to an adjacent matrix region a projection that is greater than 400 μm.14. The machining segment as claimed in claim 13 , wherein at least two of the plurality of machining regions have with respect to a respective adjacent matrix region a projection that is greater ...

HOLE SAWS

The present invention seeks to provide a simple, easily realisable and inexpensive solution to the problems discussed above. The present invention further seeks to provide a hole-saw device which enables rapid changes of hole saw. The present invention also seeks to provide a simple device for enlarging apertures which is simple, cost effective and can be used with standard drills of corded and battery types as well as manual types. 1. A rotary hole saw for the creation of a hole in a work-piece , the tool comprising:a generally cylindrical boss having a shaft at a proximal end for fitment to a chuck of a drill tool and rotation therewith about a central axis; anda hole saw for cutting a substantially circular hole in a work-piece;wherein the boss comprises a mandrel and a screw-threaded portion, wherein the mandrel is operable to axially slide between a proximal release position and a distal locking position, between the proximal end and the screw-threaded portion at a distal end of the boss, the mandrel having at least one elongate member extending in a distal direction coaxial with the central axis;{'b': '1', 'wherein the hole-saw element comprises a generally cup-shaped cutting element, having a base and a circularly cylindrical annular wall element extending therefrom with a distal edge at a distance L from the base, wherein the base has a central screw-threaded portion for coupling with the boss and at least one aperture through which the at least one elongate member of the mandrel can extend;'}the mandrel having a bias to the distal locking position, such that once the hole saw is screw-threadedly associated with the boss and the mandrel faces the base of the hole saw and the at least one elongate member of the mandrel extends into the bases of the hole saw the boss and the hole saw become axially and radially fixed with respect to each other.2. A rotary hole saw according to claim 1 , operable for the enlargement of a pre-existing hole in a work-piece claim ...

Table top for material shaping machine and method of mounting thereof

A material shaping machine and a method of mounting a table top to the material shaping machine is disclosed. The machine includes first and second support members extending generally in a vertical direction. A bridge longitudinally extends between the first and the second support members. A carriage is configured to move longitudinally along the bridge. A rotary cutting tool is mounted on the carriage. A work table including a table top having a silicon/epoxy combination material supports a workpiece to be cut by the cutting tool. An actuator moves the rotary cutting tool toward and away from the workpiece positioned on or above the table top and a motor provides rotational motion to the rotary cutting tool.

MATERIAL LOADING APPARATUS

A material loading apparatus includes a movable material support surface that is pivotally mounted to the frame. The loading apparatus also includes a first link that extends between the support surface and the frame and is pivotally connected to the support surface at a first end of the first link and pivotally connected to the frame at a second end of the first link. The loading apparatus also includes a second link that extends between the support surface and the frame and is pivotally connected to the support surface at a first end of the second link and pivotally connected to the frame at a second end of the second link. The loading apparatus also includes an actuator that is pivotally connected to the frame and configured to move the support surface between a generally horizontal position and a generally vertical position. 1. A material loading apparatus comprising:a fixed frame;a movable support surface pivotally mounted to the frame, the support surface configured for supporting the material;a first link extending between the support surface and the frame, the first link pivotally connected to the support surface at a first end of the first link and pivotally connected to the frame at a second end of the first link;a second link extending between the support surface and the frame, the second link pivotally connected to the support surface at a first end of the second link and pivotally connected to the frame at a second end of the second link; andan actuator pivotally connected to the frame, the actuator being configured to move the support surface between a generally horizontal position and a generally vertical position.2. The material loading apparatus of claim 1 , wherein the actuator includes a ram claim 1 , the ram being pivotally connected to the second link at a location between the first end and the second end of the second link.3. The material loading apparatus of claim 1 , wherein the material loading apparatus includes a pair of first links claim ...

Electroformed thin-wall diamond drill bit with continuous wavy-shape blade

A drill bit, formed of a a drill blank and a drill body. The drill body includes multiple outer projections and outer wall channels and multiple inner projections and inner wall channels, where the inner wall channels are formed as back sides of the outer projections and the inner wall channels have complementary shapes to the shapes of the outer projections, and the outer wall channels are formed as the backside of the inner projections, and the outer wall channels have complementary shapes to the shapes of the inner projections, where the outer projections and outer wall channels are distributed around a circumference of the drill body, and wherein each of the outer projections and outer wall channels include at least one curved parts therein.

Apparatus and method for cutoff machining sintered magnet

A sintered magnet sawing apparatus is provided comprising a cylindrical work carrier mounted on a horizontal rotating spindle and having a regular polygonal shape in a perpendicular cross section, and a plurality of endless elastic belts adapted to force a work of sintered magnet against the carrier surface to secure the work thereto and adapted to travel synchronously with and counter to the rotation of the carrier in a circulatory manner. In accordance with rotation of the carrier, the work is delivered to the peripheral surface of the carrier, secured thereto by the elastic belts, moved further forward and cutoff machined by an outer cutoff blade. The divided work is moved further forward, released and discharged from the carrier.

DEVICE SYSTEM INCLUDING A RADIO LINK

A device system, including a remote control () having a device housing () and a first radio unit (), a tool device with a second radio unit and a radio link which connects the first radio unit () of the remote control () to the second radio unit of the tool device. The first radio unit is () is arranged on a front side () of the device housing (), wherein the front side () is lying opposite a rear side () of the device housing () facing the operator in a working position of the remote control (). 1. A device system comprising:a remote control having a device housing, an input device situated in an upper side of the device housing, a control unit situated within the device housing and a first radio unit;a tool device including a cutting tool, a drive motor driving the cutting tool, another control unit controlling the drive motor, and a second radio unit;a radio link connecting the first radio unit of the remote control to the second radio unit of the tool device;the first radio unit being situated on a front side of the device housing, the front side being situated opposite a back side of the device housing facing the operator in a working position of the remote control.2. The device system as recited in wherein the first radio unit includes a first radio module having a first radio antenna and a second radio module having a second radio antenna claim 1 , polarization directions of the first and second radio antennas being situated perpendicularly to each other.3. The device system as recited in wherein the first and second radio modules have an identical design.4. The device system as recited in wherein the first radio unit includes a third radio module having a third radio antenna claim 2 , a polarization direction of the third radio antenna being situated perpendicularly to the polarization directions of the first and second radio antennas.5. The device system as recited in wherein a distance between a first antenna base point of the first radio module and a ...

Power Saw Blade Cooling Arrangement

A cutting machine includes a motor assembly, a cutting blade powered by the motor assembly for cutting a work piece, and a cooling arrangement which includes a fluid nozzle unit for delivering cooling fluid onto a cutting edge portion of the cutting blade to ensure the cooling fluid to adhere on the cutting blade by means of adhesion and cohesion of the cooling fluid so as to cool the cutting blade during the cutting operation and to combine the cooling fluid with residual particles of the work piece after the work piece is cut. Therefore, no excessive cooling fluid is stayed on the cutting blade to minimize the formation of dust, and misting of the cooling fluid during the cutting operation. 1. A cutting machine for cutting a work piece , comprising:a motor assembly;a cutting head arrangement which comprises a cutting blade powered by said motor assembly, wherein said cutting blade is driven to rotate at a forward spinning direction to define a cutting edge portion for contacting with the work piece at a cutting point during a cutting operation; anda cooling arrangement which comprises a fluid nozzle unit supported at said cutting head arrangement for delivering cooling fluid onto said cutting edge portion of said cutting blade to ensure the cooling fluid to adhere on said cutting blade by means of adhesion and cohesion of the cooling fluid so as to cool said cutting blade during said cutting operation and to combine the cooling fluid with residual particles of the work piece after the work piece is cut.2. The cutting machine claim 1 , as recited in claim 1 , wherein an injecting angle of said fluid nozzle unit is set at a rearward direction with respect to said cutting machine for preventing the cooling fluid stayed on said cutting blade in an over-saturated manner.3. The cutting machine claim 2 , as recited in claim 2 , wherein said fluid nozzle unit is adjustable to adjust said injecting angle between said rearward direction and a forward direction.4. The ...

Circular saw apparatus with integrated multistage filtration system

Various dust collection apparatuses are disclosed, which include a vacuum source, a circular saw blade, and a worktable comprising a center slot axially aligned to the circular saw blade. In a first aspect, the center slot includes an air flow channel proximate to an anticipated point of contact between the circular saw blade and a workpiece, and the vacuum source is configured to provide a focused negative pressure beneath the worktable via the air flow channel In another aspect, the vacuum source provides a negative pressure beneath the worktable at the center slot, and a multistage filter is included to collect airborne dust drawn by the negative pressure from an area proximate to the center slot. In yet another aspect, the vacuum source is configured to provide a first negative pressure beneath the worktable at the center slot, and a second negative pressure via an auxiliary port.

DEVICE FOR CUTTING CONCRETE PILES

The invention relates to a device for cutting concrete piles. The device having a frame, gripping means connected to the frame and including at least two opposing gripping parts, which are movable at least closer to each other to form a closing grip around a pile and further away from each other to release the pile from the closing grip, and sawing means, which are arranged to perform a back and forth sawing movement on the two opposite sides of the pile moving along a horizontal guide rail attached to the frame and which is further arranged to turn towards the pile to be sawed and back around their rotational axis. The invention further relates to computer program means suitable for controlling a device according to the invention to perform a desired sawing profile in the concrete pile. 1. A device for cutting concrete piles , comprising a frame , gripping means connected to the frame and comprising at least two opposing gripping parts , which are movable at least closer to each other to form a closing grip around a pile and further away from each other to release a pile from the closing grip , and sawing means , which , when using the device , are to be taken on the two opposite sides of the pile to perform a back and forth sawing movement moving along a horizontal guide rail attached to the frame and which are further arranged to turn towards the pile to be sawed and back around their rotational axis wherein the device comprises a turning mechanism , an angle sensor arranged in the end of the rotational axis for measuring the angle of rotation of the sawing means and elements for defining the location of the sawing means on the guide rail and control elements for controlling the sawing means on the basis of the signals from the angle sensor and the elements defining the location of the sawing means to perform a de-sired sawing profile in the concrete pile to be cut.2. The device according to claim 1 , wherein the device comprises an inductive sensor for detecting ...

CUTTING PLATFORM AND METHOD OF USING THE SAME

A cutting platform for supporting a cutter adjacent a concrete pad and a method of making clean cuts into the pad is disclosed. The platform includes a base having an upper surface positioned so that it is level with an upper surface of the pad. The cutter is received on the base's upper surface and is rollable onto the pad's upper surface. One or more support legs extend downwardly from a lower surface of the base and are adjustable in length. At least one arm extends outwardly from the base and rests on the pad's upper surface. A replaceable insert is received in a recess in the first end of the base adjacent the pad. The cutter's blade is actuated and cuts initially into the insert. As the cutter rolls from the base onto the pad, a clean cut is made into the side and upper surface of the pad. 1. A cutting platform for supporting a concrete cutter adjacent a concrete pad; said cutting platform comprising:a base adapted to receive the concrete cutter on an upper surface thereof;at least a first support leg extending downwardly and outwardly from a lower surface of the base; andat least one arm provided on the base, at least part of the at least one arm extending outwardly and forwardly from a first end of the base and being adapted to rest on an upper surface of the concrete pad.2. The cutting platform as defined in claim 1 , wherein the base defines a recessed region in the first end; and wherein the cutting platform further includes an insert that is complementary to the recessed region and is selectively receivable therein.3. The cutting platform as defined in claim 2 , wherein the insert is comprised of wood or a material that is cuttable by a saw blade of a concrete cutter.4. The cutting platform as defined in claim 1 , wherein the base includes a second end that is spaced a distance from the first end; and wherein the at least the first leg is located adjacent the second end of the base.5. The cutting platform as defined in claim 1 , wherein the base includes ...

WALL SAW WITH SAFETY CLUTCH

A wall saw comprising:—a carriage ();—a saw arm () pivotally mounted to the carriage;—a rotatable spindle () rotatably mounted to the saw arm and configured for connection to a saw blade; and—an electric drive motor () for rotating the spindle. The rotor () of the drive motor comprises a rotor hub () which is operatively connected to the output shaft () of the drive motor through a safety clutch () so as to allow torque to be transmitted from the rotor hub to the output shaft via the safety clutch, the safety clutch being configured to allow mutual rotation between the rotor hub () and the output shaft () when said torque reaches a given threshold value. The safety clutch () is accommodated in a space inside the rotor hub (). 115-. (canceled)16. A wall saw comprising:a carriage to be mounted to a guide rail so as to be moveable along the guide rail;a saw arm pivotally mounted to the carriage;a rotatable spindle configured for connection to a saw blade, the spindle being rotatably mounted to the saw arm;an electric drive motor, which is mounted to the carriage and which is provided with a stator, a rotor and an output shaft; anda transmission mechanism for transmitting torque from the output shaft of the drive motor to the spindle, the spindle being rotatable under the effect of the drive motor via the output shaft and the transmission mechanism,wherein the rotor of the drive motor comprises a rotor hub which is operatively connected to the output shaft of the drive motor through a safety clutch so as to allow torque to be transmitted from the rotor hub to the output shaft via the safety clutch, the safety clutch being configured to allow mutual rotation between the rotor hub and the output shaft when the torque reaches a given threshold value; andwherein the safety clutch is accommodated in a space inside the rotor hub.17. A wall saw according to claim 16 , wherein the safety clutch comprises one or more first clutch members claim 16 , each of which being non- ...

Combination pavement cutting and debris removal device

The present invention is an all-in-one pavement cutting and debris removal system, which comprises a cutting assembly including a saw blade and motor for supporting and rotating the saw blade, a water supply assembly that sends water to the saw blade including a water tank and water tube to keep the saw blade cool during cutting, and an assembly for removing the cutting debris/slurry created during the cutting. The assembly may utilize a high-pressure air flow or water to blow away the cement/water debris or a high vacuum suction device to vacuum away the cement/water debris. The present system employs a single truck to carry or tow the cutting assembly, water tank and air compressor for the same function that currently requires two trucks.

Method and Apparatus for Tile Cutting

A method and apparatus for cutting rigid, brittle articles such as tile used as a building material is improved by the capability to make both straight and curved cuts in tile on a single machine. The machine has both circular and plunge cutting tools and a table for moving the tile in both curved and straight lines in relation to the cutting tool, thereby achieving both curved and straight cuts. 1. A method for cutting an article comprising:positioning the article on a stage including both a linear stage and a rotary stage;positioning a saw having a plunge cutter so that the plunge cutter intersects the article; andperforming a curved cut by locking the linear stage and moving the article with the rotary stage.2. The method of further comprising:replacing the plunge cutter with a circular blade;positioning the saw having the circular blade so that the circular blade intersects the article; andperforming a straight cut by locking the rotary stage and moving the article with the linear stage.3. The method of further comprising:rotating the saw 90 degrees to position the circular blade perpendicular to the article.4. The method of further comprising:performing a freehand cut by moving the article with both the rotary stage and the linear stage.5. An apparatus for cutting an article comprising:a saw fitted with a plunge cutter; anda stage for holding the article including both a linear stage and a rotary stage, wherein curved cuts are made in the article by locking the linear stage and moving the article with the rotary stage.6. The apparatus of wherein the saw is operable to replace the plunge cutter with a circular blade.7. The apparatus of wherein the saw is operable to rotate 90 degrees to make the circular blade perpendicular to the article.8. The apparatus of wherein straight cuts are made in the article by locking the rotary stage and moving the article with the linear stage.9. The apparatus of wherein freehand cuts are made in the article by moving the article ...

Dust Removal Arrangement for an Engine-Driven Tool

The present disclosure relates to engine-driven tool () comprising a rotatable work tool () and an engine () for propelling a first driving pulley () via a clutch wheel () comprised in a power transferring unit () and having an outer edge. The first driving pulley () and the clutch wheel () arc arranged to rotate around a common driving axis (). The power transferring unit () comprises an endless drive belt () that is arranged propel the rotatable work tool () when the first driving pulley () is propelled. A fan arrangement () is arranged to convey air front a dust channel () formed between a shielding cover () and the rotatable work tool (), and comprises a fan turbine () that is connected to a fan pulley () connected to the drive belt () is arranged to propel the fan pulley (). A first overlap line () extends along the outer edge () of the clutch wheel (), perpendicular to the extension of the common driving axis (), the first overlap line () further extending via the fan turbine (). 1. An engine-driven tool comprising a rotatable work tool , having a center and a circumference , and an engine that is arranged to propel the rotatable work tool , wherein the engine-driven tool further comprises a shielding cover that is arranged to shield a part of the rotatable work tool , and a first swiveling part that is attached by a first swivel attachment and partly extends either inside or outside the shielding cover , allowing the first swiveling part to pivot around a first swivel axis that crosses the rotatable work tool closer to the center of the rotatable work tool than the circumference of the rotatable work tool , wherein the engine-driven tool comprises a second swiveling part that is attached to the first swiveling part and partly extends either inside or outside the first swiveling part , wherein the second swiveling part is attached to the first swiveling part by a second swivel attachment , allowing the second swiveling part to pivot around a second swivel axis ...

Concrete Cutter with Depth Setting and Retention System

A power saw includes a base plate, housing, and spring. The base plate is configured to move along a workpiece, and includes a pivot mount and a first retaining member defining an arcuate slot. The housing is configured to receive a cutting tool, includes a pivoting member and a second retaining member, and has a center-of-mass located between the pivot mount and first retaining member. The pivoting member is engaged with the pivot mount to pivotably mount the housing thereto. The second retaining member is received in the slot to guide a pivot of the housing. The spring is engaged between the base plate and housing, and is exerts a spring force acting against the weight of the housing such that a resultant force is sufficient to enable engagement of the cutting tool with the workpiece.

CONCRETE/MASONRY CUTTING DEVICE WITH FAST-START DESIGN AND INTERLOCKING REINFORCEMENT

A diamond cutting tool () for enabling a fast cutting start may include a rotatable main body () and a cutting portion (). The rotatable main body may include a substantially circular periphery. The cutting portion may include an interlocking support assembly () and a plurality of notched cutters (). The notched cutters may be disposed around the circular periphery extending outwardly from the main body. The notched cutters () may be formed of a first diamond-metal matrix. The interlocking support assembly () may be provided radially outwardly of the notched cutters and may include a softer diamond-metal matrix and/or a different diamond concentration therein than the first diamond-metal matrix. The interlocking support assembly may include a reinforcement portion () disposed between the notched cutters () and a top section () covering radially distal portions of the notched cutters. 1. A diamond cutting tool for enabling a fast cutting start , the tool comprising:a rotatable main body having a substantially circular periphery; anda cutting portion comprising:a plurality of notched cutters disposed around a portion of the circular periphery extending outwardly from the main body, the notched cutters being formed of a first diamond-metal matrix; andan interlocking support assembly provided outwardly of the notched cutters, the interlocking support assembly comprising a softer diamond-metal matrix and/or a different diamond concentration therein than the first diamond-metal matrix,wherein the interlocking support assembly includes a reinforcement portion disposed between the notched cutters and a top section covering radially distal portions of the notched cutters, wherein the notched cutters are separated from each other by the reinforcement portion.2. The tool of claim 1 , wherein the main body comprises a steel core claim 1 , and the notched cutters are affixed to the main body by welding claim 1 , brazing claim 1 , soldering claim 1 , sintering claim 1 , gluing or ...

TILE SAW

A tile saw includes a table configured to support a workpiece, a guide rail upon which the table is supported and movable along a longitudinal axis, a saw unit for cutting the workpiece as the table moves along the longitudinal axis, and a roller assembly for coupling the table to the guide rail. The roller assembly includes an upper roller engaged with an upper portion of the guide rail, a lower roller engaged with a lower portion of the guide rail, and a resilient member biasing at least one of the upper roller or the lower roller against the guide rail. 1. A tile saw comprising:a table configured to support a workpiece;a guide rail upon which the table is supported and movable along a longitudinal axis;a saw unit for cutting the workpiece as the table moves along the longitudinal axis; and an upper roller engaged with an upper portion of the guide rail,', 'a lower roller engaged with a lower portion of the guide rail, and', 'a resilient member biasing at least one of the upper roller or the lower roller against the guide rail,, 'a roller assembly for coupling the table to the guide rail, the roller assembly including'}2. The tile saw of claim 1 , wherein the longitudinal axis is parallel to the guiderail.3. The tile saw of claim 1 , wherein the roller assembly is a first of a plurality of roller assemblies coupling the table to the guide rail.4. The tile saw of claim 3 , wherein the roller assemblies are equally spaced along the table relative in the direction of the longitudinal axis.5. The tile saw of claim 1 , wherein the table includes a slot claim 1 , wherein the roller assembly further comprises a shaft upon which the lower roller is rotatably supported claim 1 , and wherein the shaft is received within the slot.6. The tile saw of claim 5 , wherein the slot supports the shaft for movement in a vertical direction that is perpendicular to the longitudinal axis.7. The tile saw of claim 6 , wherein the resilient member extends into the slot to bias the shaft in ...

RETENTION APPARATUS FOR MATERIAL REMOVAL MACHINES

Retention apparatus and systems for material removal machines are disclosed. In some examples, a material removal machine having a material removal tool (e.g., a saw blade, an abrasive saw, a polisher, a grinder, and/or more general material preparation and/or testing tool) is secured to a spindle using a spring loaded nut. The spring loaded nut of the present disclosure self-tightens when the material removal tool is rotated. Additionally, the spring loaded nut requires a smaller force to attach and/or remove the spring loaded nut, allowing for tool-less and/or low torque attachment and/or removal. 1. A material removal machine , comprising:a spindle;an adapter coupled to the spindle; anda spring loaded nut manually coupled to the adapter, the spring loaded nut securing a material removal tool on the spindle.2. The material removal machine of claim 1 , wherein an adapter end of the spindle comprises a cavity encircled by a coupling surface claim 1 , the adapter coupled to the spindle at the coupling surface.3. The material removal machine of claim 2 , wherein the spindle is configured to rotate at the urging of a pulley claim 2 , the spindle having a first spindle portion retained by the pulley and a second spindle portion spaced from the pulley claim 2 , the second spindle portion including the adapter end.4. The material removal machine of claim 2 , wherein the adapter comprises a base and a neck claim 2 , the base having a complementary coupling surface coupled to the coupling surface of the spindle claim 2 , and the neck extending from the base and having an engaging surface engaged to a complementary engaging surface of the spring loaded nut.5. The material removal machine of claim 1 , further comprising a first flange and a second flange claim 1 , the spindle extending through the first flange and the second flange claim 1 , and the material removal tool positioned between the first flange and the second flange.6. The material removal machine of claim 5 , ...

POWER CUTTER

A power cutter disclosed herein may include: a disk blade; a body configured to rotatably support the disk blade about a rotation axis and comprising an electric motor for rotationally driving the disk blade; a plurality of battery packs detachably attached to the body and configured to supply electric power to the electric motor; a grip disposed on the body and configured to be gripped by a user; and a main switch disposed on the grip and configured to electrically connect the plurality of battery packs to the electric motor when the user activates the main switch; wherein a central axis of the grip extends along a reference plane which is perpendicular to the rotation axis of the disk blade, and a distance from the reference plane to the disk blade is less than or equal to 1.5 times a width of the grip. 1. A power cutter comprising:a disk blade;a body configured to rotatably support the disk blade about a rotation axis and comprising an electric motor for rotationally driving the disk blade;a plurality of battery packs detachably attached to the body and configured to supply electric power to the electric motor;a grip disposed on the body and configured to be gripped by a user; anda main switch disposed on the grip and configured to electrically connect the plurality of battery packs to the electric motor when the user activates the main switch;wherein a central axis of the grip extends along a reference plane which is perpendicular to the rotation axis of the disk blade, anda distance from the reference plane to the disk blade is less than or equal to 1.5 times a width of the grip.21. The power cutter according to claim , , wherein a distance from the reference plane to a center of gravity of the power cutter is less than or equal to 1.5 times the width of the grip.3. The power cutter according to claim 2 , whereinthe plurality of battery packs comprises at least a first battery pack and a second battery pack, anda center of gravity of the first battery pack is ...

DEVICE FOR CUTTING GRANITE OR OTHER HARD MATERIALS

A device for cutting granite or other hard materials includes a cutter disc () for making cut-outs of rectilinear or curved shape. The device includes a machining head () simultaneously carrying the cutter disc () and jigsaw elements () for making cuts in closed corners. The device may further include manipulator sucker elements () for moving parts to be cut or parts to be cut out. 16567. Device for cutting granite or other hard materials , of the type including a cutter disc () for making cut-outs of rectilinear or curved shape , characterized in that the device includes a machining head () simultaneously carrying said cutter disc () and jigsaw means () for making cuts in closed corners.28. Cutting device according to claim 1 , characterized in that the device includes manipulator sucker means () for moving parts to be cut or parts (P) to be cut out.371617. Cutting device according to claim 1 , characterized in that the jigsaw means () include a saw blade () with a diamond coating ().48. Cutting device according to claim 2 , characterized in that the manipulator sucker means () are movable between a first or lateral stowed position and a second or manipulation position.58889ad. Cutting device according to claim 4 , characterized in that the manipulator sucker means () include a plurality of suckers (-) mounted on a common support ().69886ad. Device according to claim 5 , characterized in that the common support () of the plurality of suckers (-) is mounted laterally at a distance from and above the protective casing of the cutter disc () when the device is in a cutting position.7713147a. Device according to claim 1 , characterized in that the jigsaw means () include a sliding member () guided on two columns () and carrying the motor () for driving the jigsaw.89886ad. Device according to claim 6 , characterized in that the common support () of the plurality of suckers (-) is removably mounted on the support of the cutter disc assembly ().9675. Device according to ...

Corner Saw

A cutting apparatus for cutting corner pieces formed of stone or other materials for use as building faces or for cutting flat pieces is disclosed herein. The cutting apparatus includes a frame with a first and a second conveyor operatively attached to the frame. The first and the second conveyors are configured to carry a workpiece from a first end of the frame to the second end of the frame. The first conveyor is disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus. The second conveyor is disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, wherein the second conveyor is positioned perpendicularly to the first conveyor so as to form a V-shaped channel therewith. The cutting apparatus further includes a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor and a second cutting blade operatively attached to the frame and positioned generally parallel to the second conveyor. 122-. (canceled)23. A cutting apparatus comprising:a frame including a first end and a second end;a conveyor arrangement for moving a stone workpiece relative to the frame in a longitudinal direction, the conveyor arrangement defining a V-shaped channel for supporting the stone workpiece as the stone workpiece moves along the longitudinal direction from the first end to the second end of the frame, the conveyor arrangement including a first motorized conveyor operatively attached to the frame;a cutting blade arrangement including a first rotatable cutting blade operatively attached to the frame and positioned generally perpendicular to the first motorized conveyor.24. A cutting apparatus according to claim 23 , wherein the conveyor arrangement includes a second motorized conveyor operatively attached to the frame claim 23 , the first motorized conveyor disposed at an angle of about 45 degrees to a reference plane parallel to the longitudinal direction and ...

TILE SAW

A tile saw includes a base, and a table movably coupled to the base and moveable in a first plane between a first position and a second position to cut a workpiece. A blade assembly has a saw blade rotatable within a second plane that is perpendicular to the first plane to cut the workpiece as the table moves between the first position and the second position. The tile saw further includes a support arm fixedly coupling the blade assembly to the base via a support arm mount, and an adjustment mechanism received by the support arm mount and the base. The adjustment mechanism is movable between a first adjustment position and a second adjustment position to adjust the position of the saw blade. Adjusting the saw blade includes at least one of translating the saw blade to a third plane parallel to the second plane and pivoting the support arm to change the yaw of the saw blade. 1. A tile saw comprising:a base;a table movably coupled to the base and moveable along an axis in a first plane between a first position and a second position to cut a workpiece;a blade assembly having a saw blade rotatable within a second plane perpendicular to the first plane to cut the workpiece as the table moves between the first position and the second position;a support arm fixedly coupling the blade assembly to the base via a support arm mount; andan adjustment mechanism received by the support arm mount and the base, the adjustment mechanism is movable between a first adjustment position and a second adjustment position to adjust the position of the saw blade,wherein adjusting the saw blade includes at least one of translating the saw blade to a third plane parallel to the second plane and pivoting the support arm to change the yaw of the saw blade.2. The tile saw of claim 1 , wherein the adjustment mechanism includes a stud having a first end threadably received in an aperture of the base about a first axis claim 1 , and a second end eccentrically positioned relative to the first end ...

LUMINOUS STONE PRODUCT AND MANUFACTURING METHOD THEREFOR

The present invention relates to the field of building decoration. Disclosed is a luminous stone product including a natural stone panel, a light source, and a light-guide board. The natural stone panel includes at least one cavity and at least one light transmitting side; any of the cavities is correspondingly provided at the back side of the at least one light transmitting side, and any of the cavities extends to an edge of the natural stone panel and forms at least one opening; the light source is provided at the opening of the natural stone panel; the light-guide board is placed in the cavity and acquires light from the light source, and a gap between the light-guide board and the inner wall of the cavity is filled with a curable transparent adhesive resin. According to the present invention, the light-guide board is utilized to guide light, such that a point light source is changed into a planar light source which can emit light uniformly. 137-. (canceled)38. A process for making a luminous stone product:{'claim-text': ['the block of stone has a top, a bottom, a front face, a rear face opposite to the front face, a first side, and a second side opposite to the first side, and', 'the slit is formed between the front face and the rear face and provides an opening in at least one of the top and the first and second sides, and'], '#text': 'sawing a block of stone to produce a slit in the block of stone without separating the block into separate pieces, wherein'}filling the slit with a light transmitting reinforcing material, through the opening, to support and reinforce at least a part of the front face;after the front face has been reinforced by the light transmitting reinforcing material, machining an external surface of the front face to reduce a thickness of at least a portion of the front face;attaching a light source to the stone for emitting light into or from the slit;wherein the slit, the front face, and the light source are configured to allow light ...

BATTERY POWERED CONCRETE SAW

A battery operated concrete saw system () includes an electric saw () and a lithium based battery pack () including a plurality of batteries () connected in series to power the saw with at least 80 volts. 1a frame having a pair of rear wheels and a pair of front wheels for facilitating movement of the saw to different locations for use and for movement during use performing a cutting operation;an electric motor mounted by the frame;a pair of saw arbors respectively mounted on the frame for rotation on opposite lateral sides of the frame forward of the pair of front wheels, and the saw arbors having a rotational connection to the electric motor to provide rotational driving thereof;an actuator for moving the pair of front wheels upwardly and downwardly with respect to the frame to pivot the frame about the rear wheels between an upper idle position and a lower use position that permits cutting of concrete with a saw blade mounted on one of the arbors;and a lithium based battery pack including a plurality of batteries connected in series to provide at least 80 volts for powering the saw.. A battery power concrete saw comprising: This application is a divisional of U.S. patent application Ser. No. 13/712,091 filed on Dec. 12, 2012 by Francis M. Gobright IV under the title BATTERY POWERED CONCRETE SAW, which is a divisional of U.S. patent application No. 12/713,293 filed on Feb. 26, 2010 by Francis M. Gobright IV and titled BATTERY POWERED CONCRETE SAW SYSTEM, now U.S. Pat. No. 8,347,872, issued Jan. 8, 2013.This invention relates to a battery powered concrete saw for cutting concrete, asphalt and the like, etc.Saws for cutting concrete, asphalt and the like, etc. are conventionally electrically powered or powered by an internal combustion engine that utilizes gasoline or diesel fuel, the latter of which cannot be used indoors due to the exhaust generated. When concrete saws are powered by electricity, an electric motor of at least 5 horsepower is needed and an internal ...

Saw Blade For Making Thin Cuts in Green Concrete

A saw blade for rotating about an axis to cut green concrete may include a main body and a cutting portion. The main body includes an inner section and an outer section. The inner section has a first thickness in an axial direction that is greater than a second thickness of the outer section. The cutting portion includes a diamond-metal matrix joined to the outer section to cut a material responsive to rotation of the blade. The inner section extends radially outwardly from a center of the blade to a non-contact shoulder at the first thickness to transition to the outer section at the second thickness. The outer section extending radially outwardly to an outer diameter of the main body. 1. A saw blade for rotating about an axis to cut thin control joints of about 2 mm or less in green concrete , the blade comprising:a main body comprising an inner section and an outer section, the inner section having a first thickness in an axial direction that is greater than a second thickness of the outer section; anda cutting portion comprising a diamond-metal matrix joined to the outer section to cut a material responsive to rotation of the blade,wherein the inner section extends radially outwardly from a center of the blade to a non-contact shoulder at the first thickness to transition to the outer section at the second thickness, the outer section extending radially outwardly to an outer diameter of the main body.2. The blade of claim 1 , wherein the inner section comprises a steel core having the first thickness of about 2 mm to about 20 mm.3. The blade of claim 1 , wherein the first thickness is up to about ten times larger than the second thickness.4. The blade of claim 1 , wherein the second thickness is less than about 2 mm.5. The blade of claim 1 , wherein the non-contact shoulder is formed at a 90 degree angle relative to a face of the outer section.6. The blade of claim 1 , wherein the non-contact shoulder is formed at any angle including about a 45 degree angle ...

Cutting device and a method for cutting a pile

A cutting device for cutting a pile, including a body part, for connecting the cutting device to a working machine and a gripper attached to the body part to drive the cutting device around the pile to be cut, the gripping means having at least two opposite gripping parts to obtain a grip from the pile and to release the gripper from the grips. The cutting device includes at least two sawing parts arranged to move to a sawing position and to a secure position, and the cutting device having a saw connected to the sawing parts to perform sawing operation when at least one sawing part is in the sawing position, and the cutting device includes elastic means to adapt to forces, which arises during sawing movement of the a saw. The saw is arranged to move during the sawing movement substantially horizontally to the pile being cut.

A Handheld Cut-Off Saw for Cutting Concrete and Stone, Comprising a Drive Arrangement for Driving A Circular Cutting Tool

A handheld cut-off saw () for cutting concrete and stone, the handheld cut-off saw comprising a drive arrangement () for driving a circular cutting tool (), the drive arrangement comprising: a belt drive portion () comprising a first pulley () and a second pulley (), wherein the first pulley is arranged to be powered by a power source () and to drive the second pulley via a belt (), wherein the second pulley () has a larger pitch diameter than the first pulley (); and a gear transmission portion () comprising a first gearwheel () and a second gearwheel (), wherein the first gearwheel () is co-axially connected to the second pulley () and radially connected to the second gearwheel (), and wherein the second gearwheel () is arranged to be co-axially connected to the circular cutting tool (). 1. A handheld cut-off saw for cutting concrete and stone , the handheld cut-off saw comprising a drive arrangement for driving a circular cutting tool the drive arrangement comprising;a belt drive portion comprising a first pulley and a second pulley, wherein the first pulley is arranged to be powered by a power source and to drive the second pulley via a belt, wherein the second pulley has a larger pitch diameter than the first pulley; anda gear transmission portion comprising a first gearwheel and a second gearwheel, wherein the first gearwheel is co-axially connected to the second pulley and radially connected to the second gearwheel, and wherein the second gearwheel is arranged to be co-axially connected to the circular cutting tool.2. The handheld cut-off saw according to claim 1 , wherein the second gearwheel has a pitch diameter smaller than a pitch diameter of the second pulley.3. The handheld cut-off saw according to claim 1 , wherein a first distance from a center axis of the first pulley to a center axis of the second pulley is smaller than a second distance from the center axis of the first pulley to a center axis.4. The handheld cut-off saw according to claim 1 , ...

Drill Bit with an Exchangeable Cutting Portion

A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess. 1. A drill bit that is rotatable in a rotational direction around an axis of rotation , comprising:a cutting portion having an annular portion, wherein the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder; anda drill shaft portion having a cylindrical drill shaft, wherein the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion;wherein the outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and wherein the outer insertion element and the inner insertion element are connectable to each other via a pin element that is movable into a slot-shaped recess;wherein the pin element is attached to an outside of the inner insertion element and wherein the outer insertion element has the slot-shaped recess.2. The drill bit according to claim 1 , wherein the end face is in contact with the stop shoulder in a connected state.3. The drill bit according to claim 2 , wherein a length of the inner insertion ...

DRILLING TOOL

A drilling tool is disclosed. The drilling tool includes a drilling stub, a cutting element attached to the drilling stub, and a fastening section for fastening onto a tool holder. The fastening section is divided into at least one guide region and one locking region, where at least one interlocking geometry, which protrudes in the axial direction beyond the remaining locking region, and which in particular is a bulge, is designed for transmission of a torque from the tool holder to the drilling tool, and the at least one interlocking geometry has two abutting surfaces each in the tangential direction. One first abutting surface of the two abutting surfaces is designed essentially parallel to a longitudinal axis of the drilling tool and the first abutting surface serves to transmit the torque. 110.-. (canceled)11. A drilling tool , comprising:a drilling stub;a cutting element attached to the drilling stub;a fastening section for fastening onto a tool holder, wherein the fastening section is divided into a guide region and a locking region; andan interlocking geometry protruding in an axial direction on the locking region, wherein the interlocking geometry has a first abutting surface and a second abutting surface in a tangential direction;wherein the first abutting surface is essentially parallel to a longitudinal axis of the drilling tool and wherein a torque is transmittable from the tool holder to the drilling tool via the first abutting surface.1210. The drilling tool according to claim , wherein the interlocking geometry is a bulge.1310. The drilling tool according to claim , wherein the first abutting surface has a greater extent in the axial direction than the second abutting surface.1410. The drilling tool according to claim , wherein the first abutting surface is divided in the axial direction into an outer abutting surface and an inner abutting surface and wherein the inner abutting surface is essentially parallel to the longitudinal axis of the drilling ...

Multi-directional marble cutting apparatus

The invention discloses a multi-directional marble cutting apparatus, which includes a machine tool. A rotary column is rotatably provided at the center of the upper end surface of the machine tool. A base is fixed at the upper end of the rotary column. A clamping cavity is provided at the center of the machine tool. A steering motor is fixed on the lower wall of the clamping cavity. The lower end of the rotating column extends into the clamping cavity and is dynamically connected to the upper end of the steering motor. A clamping device is provided on the side symmetrically, and a left-right symmetrical clamping plate is provided in the clamping device, and the clamping plates are located on the left and right sides of the rotating column. 1. A multi-directional marble cutting apparatus includes a machine tool , a center of the upper end surface of the machine tool is rotatably provided with a rotation column , a base of the rotation column is fixedly provided with a base , a center of the machine tool is provided with a clamping cavity , and the clamp A steering motor is fixed on the lower wall of the cavity , and the lower end of the rotating column extends into the clamping cavity and is dynamically connected to the upper end of the steering motor;Clamping devices are symmetrically provided in the clamping cavity and on the left and right sides of the rotating column. The clamping devices are provided with left and right symmetrical clamping plates. The clamping plates are located on the left and right sides of the rotating column. After the steering motor drives the base to rotate through the required angle through the rotating column, the clamping plate may clamp the left and right ends of the rotating column, thereby increasing the stability of the base during the cutting process. Sex Lifting devices are provided on the left and right sides of the machine tool. The lifting devices are provided with lifting columns that are symmetrical to the left and right. ...

A TILE OR MASONRY SAW DUST COLLECTION ARRANGEMENT

The present disclosure relates to a tile or masonry saw assembly comprising a saw device () including a motor () arranged to run a saw blade () to cut a workpiece. The saw assembly also comprises a frame () that is arranged to support the saw device () and a workpiece support () operably coupled to the frame () to support the workpiece relative to the saw device (). The saw assembly further comprises a cover assembly () with a cover () and a supporting structure (). A front end () is arranged to face the saw blade () and an opposing rear end () where a dust hose attachment () is positioned and arranged to be connected to a vacuum dust collection arrangement. The supporting structure () comprises a base () that is arranged to be fastened to the workpiece support (). The cover () is movable relative the base (), and the cover assembly () is releasably attachable to the workpiece support (). 1. A tile or masonry saw assembly comprising:a saw device including a motor arranged to run a saw blade to cut a workpiece in a cutting direction;a frame that is arranged to support the saw device such that the saw device is enabled to move relative to the frame to execute cutting operations by means of the saw blade;a workpiece support operably coupled to the frame to support the workpiece relative to the saw device, and to allow the workpiece support to be moved along the frame; anda cover assembly that has a first longitudinal extension and in turn comprises a cover and a supporting structure, and has a front end that is arranged to face the saw blade and a rear end that is arranged to face away from the saw blade, where the cover assembly comprises a dust hose attachment that is positioned at the rear end and is arranged to be connected to a vacuum dust collection arrangement;said cover assembly being releasably attachable to the workpiece support, where the supporting structure comprises a base that is arranged to be attached to the workpiece support;wherein the workpiece ...

ELECTRIC CONCRETE SAW

A self-propelled electric concrete saw having at least two electric motors. A first electric motor of the concrete saw is powered by an external power supply and can power both a saw blade and a drive system. A second electric motor of the concrete saw is powered by a rechargeable battery and can power the drive system. The concrete saw can be maneuvered by using the second electric motor with or without the concrete saw being connected to the external power supply. 120-. (canceled)21. A self powered electric concrete saw comprising a frame having a front end , a rear end and a longitudinal length extending between the front and rear ends; a saw blade that is rotatably mounted relative to the frame and configured to be driven; at least one rear wheel and at least one front wheel mounted relative to the frame for facilitating movement of the saw; the at least one rear wheel and the at least one front wheel include at least one drive wheel; a drive system mounted relative to the frame and configured to drive the at least one drive wheel at a desired speed , the drive system being operably connected to the at least one drive wheel; the concrete saw further comprising a first electric motor and a second electric motor wherein the first and second electric motors are operable independent of one another; the first electric motor having a first motor power output and the second electric motor having a second motor power output wherein the first motor power output is greater than the second motor power output; the first electric motor mounted relative to the frame and being operably connected to the saw blade for driving the saw blade about a blade axis; the second electric motor mounted relative to the frame and being operable independent of the first electric motor; the second electric motor being selectively operably connected to the drive system and is operable independent of the rotation of the saw blade; the concrete saw having an internal power source to provide ...

Protection Arrangement for a Power Tool

The present disclosure relates to a hand-held power tool ( 1 ) comprising a rotatable work tool ( 2 ) with a center ( 16 ) and a circumference ( 17 ) and having a direction of rotation ( 19 ). The power tool ( 1 ) further comprises a blade guard arrangement ( 8 ) that is arranged to shield a variable part of the rotatable work tool ( 2 ) and comprises a blade guard ( 12 ) and a swiveling cover part ( 11, 11′, 11 ″) attached to the blade guard ( 12 ). In a first position, the swiveling cover part ( 11, 11′, 11 ″) is positioned such that a first arc (A) of a circle is covered, following the blade guard ( 12 ), and running an angular distance along the circumference ( 17 ) after the blade guard ( 12 ), in the direction of rotation ( 19 ). The cover part ( 11 ) is moveable between the first position and a second position where a cutting operation of the rotatable work tool ( 2 ) along the first arc (A) of a circle is allowed. The cover part ( 11, 11′, 11 ″) is biased towards the first position. The present disclosure also relates to blade guard arrangements.

BELT COOLING SYSTEM

A power tool having a housing, a motor, especially an electric motor, a drive shaft that can be driven by the motor, a belt drive for transmitting the driving force of the motor to a tool, and a first fan that serves to generate a first air path in the housing as well as to cool at least the motor. The first fan and the belt drive can be driven by the drive shaft. The power tool has a second fan that serves to generate a second air path in the housing as well as to cool at least the belt drive. 16-. (canceled)7. A power tool comprising:a housing;a motor;a drive shaft drivable by the motor;a belt drive for transmitting the driving force of the motor to a tool; anda first fan serving to generate a first air path in the housing as well as to cool at least the motor, the first fan and the belt drive drivable by the drive shaft; anda second fan serving to generate a second air path in the housing as well as to cool at least the belt drive.8. The power tool as recited in wherein the second fan is drivable by the drive shaft.9. The power tool as recited in wherein the first air path has a first intake opening on an outside of the housing and the second air path has a second intake opening on the outside of the housing claim 7 , and whereby the first and second intake openings are positioned on a side of the housing facing away from the tool.10. The power tool as recited in wherein the second fan is positioned with respect to the belt drive in such a way that at least part of the belt drive to be cooled is at least partially situated in an excess-pressure area generated by the second fan.11. The power tool as recited in wherein the first air path and the second air path are positioned at least partially separately from each other in the housing.12. The power tool as recited in wherein the second fan is made at least partially of metal.13. The power tool as recited in wherein the motor is an electric motor. The invention relates to a power tool that has a housing, a motor, ...

TILE SAW

A tile saw for cutting tile includes a frame assembly on which a rail assembly is mounted and a table assembly that is movable along the rail assembly. The table assembly includes a table and wheels mounted on the underside thereof that move the table along the rail assembly. The table assembly can cantilever with respect to the frame assembly by the travel of the wheels along the rail assembly. By cantilevering the table assembly, a wide variety of sizes of tiles can be cut without increasing the length of the rails to accommodate larger tile. The saw assembly also includes an asymmetrical C-shaped column assembly that increases the tile size capacity of the tile saw without increasing the table size. 1. A saw assembly comprising:a base;a frame assembly disposed on the base;a rail assembly disposed on the frame assembly, the rail assembly having a longitudinal axis, a first end and a longitudinally opposite second end;a support assembly disposed on at least one of the base and the frame assembly and comprising a motor, and a cutting wheel driven by the motor, the cutting wheel having a cutting wheel axis that lies in a cutting wheel axis plane;a table assembly having a table body, the table assembly movably disposed on the rail assembly between a first cantilevered position with respect to the frame assembly at the first end of the rail assembly, and a second cantilevered position with respect to the frame assembly at the second end of the rail assembly; anda plurality of wheels serially arranged on the table body to move the table assembly along the rail assembly between the first cantilevered position wherein at least two of the plurality of wheels are moved beyond the first end of the rail assembly, and the second cantilevered position wherein at least two of the plurality of wheels are moved beyond the second end of the rail assembly.2. The saw assembly according to claim 1 , wherein the at least two of the plurality of wheels in the first cantilevered position ...

CUT AND MOVEMENT FABRICATION SYSTEM

Stone fabrication machine and movement system for granite and quartz. The industry has always faced three challenges. 1) Moving a material that is extremely heavy; possibly weighing up to 1200 lbs. 2) not damaging material when moving, processing and installing. 3) Safety. It is the Cut and Polish Complete Fabrication System that installed, with utilities, water, electric, and air are also installed, you can fabricate from start to finish. You provide a forklift and utilities and our fabrication system will do the rest. This is new way to fabricate in two ways using only one person: only moving the piece twice-once to lay on the tables and second loading for delivery. Currently pieces are moved 3 to 6 times averaging 4, meaning taking 2 to 3 fabricators. Utilities distributed throughout machine for cutting and a separate utility bar for operator. This machine becomes the hub of entire shop. 1. A saw and movement system allowing a single operator to cut and move slab material anywhere on the machine and extension tables anywhere up to 360° , consisting of saw with roller top , extension roller tables , Bridgeway bars and soft spot landing areas.21. A saw and movement system in claim # further comprised of tops and tables having stainless steel ball transfer bearings that are mounted with proper spacing and distance to fully support material.31. A saw and movement system in claim # further comprised of tops and tables having soft spots landing areas.41. A saw and movement system in claim # further comprised with tables having mounts for Bridgeway bars which are steel bars with ball transfers being mounted on top to comprise a bridge. These Bridgeway bars bridge the two tables together making it one work area and at the end of the table studs are mounted to have a spot to store the Bridgeway bars when not in use.5. A saw with measurement system which allows for true and accurate cutting system consisting of gauge bars , gauging pins , stop pins , laser , and rulers.65. ...

MACHINE FOR MACHINING SLABS

A machine () for machining slab materials () is described, comprising: a working plane () configured to support a slab material () to be machined; a first tool-holder electrospindle () associated to a respective supporting body (), the first electrospindle () and the respective supporting body () being supported above said working plane () by a respective supporting equipment () perpendicularly with respect to the working plane () and configured to move the first electrospindle () and the respective supporting body () about a rotation axis (Z) perpendicular to the working plane (); a moving apparatus () configured to move the equipment () in parallel to the working plane () and along directions (X, Y) perpendicular to one another; at least a second tool-holder electrospindle (), rotationally and translationally integral with the first electrospindle (), supported above the working plane () in parallel to the first electrospindle () by a respective supporting arm () slidably supported by the supporting body () of the first electrospindle (); a first actuator device () active to move the supporting arm () and the second electrospindle () supported by the same towards and away from the first electrospindle () in parallel to the working plane () and along a direction substantially perpendicular to a cutting plane extending perpendicularly to the working plane (); and a second actuator device () associated to the supporting arm () of the second electrospindle () and configured to move the second electrospindle () along a direction perpendicular to the working plane () independently of the first electrospindle (). 156-. (canceled)57. Machine for machining slab materials comprising:a working plane configured to support a slab material to be machined;a first tool-holder electrospindle associated to a respective supporting body, the first electrospindle and the respective supporting body being supported above said working plane by a respective supporting equipment ...

CARRIAGE FOR A WALL SAW

A carriage () for a wall saw that includes a saw head and a motor-driven feed unit with a guide slide and a feed motor. The carriage is made up of a base frame () with a supporting frame () and a receiving plate (), a guide frame () with a handle (), and a chassis () with a first axle (), a second axle (), and at least three wheels (). At least one wheel () of the chassis () is designed to be connectable to a gearwheel () of the guide slide () in a force- and torque-transmitting manner with the aid of a connection device. 113-. (canceled)14: A carriage for a wall saw , the wall saw made up of a saw head and a motor-driven feed unit with a guide slide and a feed motor , the wall saw being connectable to a toothed rack of a guide track with the aid of a gearwheel of the guide slide , and being movable along guide surfaces of the guide track with the aid of guide elements of the guide slide , the carriage comprising:a base frame with a supporting frame and a receiving plate connectable to the wall saw;a guide frame with a handle, the guide frame being connected to the base frame; anda chassis with a first axle, a second axle, and at least three wheels situated on the first and second axles, the chassis being situated on a bottom side of the supporting frame;at least one wheel of the at least three wheels being connectable to the gearwheel of the guide slide in a force- and torque-transmitting manner with the aid of a connection device.15: The carriage as recited in wherein the connection device includes at least one carriage gearwheel connectable to the gearwheel of the guide slide in the force- and torque-transmitting manner.16: The carriage as recited in wherein the at least one carriage gearwheel includes a first gearwheel and a second gearwheel claim 15 , the first or second gearwheel being connectable to the gearwheel of the guide slide in the force- and torque-transmitting manner.17: The carriage as recited in further comprising a transmission device situated ...

Material Trimming System

A material trimming system used with a table saw having a rotationally driven arbor, a table with a specialized tray to retain an article to be trimmed, the system including a core structure with a core rotational axis that attaches to the arbor that has an arbor rotational axis. The system also includes a peripheral ring that is about a ring rotational axis, wherein the peripheral ring removably engages the core structure, wherein the peripheral ring includes an outer peripheral element that is operational to trim a material of the article to a selected configuration. In addition, included in the system has a cover having a cover rotational axis, the cover having a mechanism to be removably attachable to the core structure that is operational to removably retain the peripheral ring to the core structure, wherein the arbor, core, ring, and cover rotational axes are all coincident to one another. 1. A material trimming system adapted to attach to a table saw having a rotationally driven arbor , a table , and an article placed on the table to be trimmed , said material trimming system comprising:(a) a core structure that is about a core rotational axis wherein said core structure is adapted to attach to the arbor that is about an arbor rotational axis of the table saw, wherein said core rotational axis and the arbor rotational axis are coincident to one another;(b) a peripheral ring that is about a ring rotational axis, wherein said peripheral ring removably engages said core structure, wherein said peripheral ring includes an outer peripheral element that is operational to trim a material of the article to a selected configuration; and(c) a cover having a cover rotational axis, said cover having a mechanism to be removably attachable to said core structure that is operational to removably retain said peripheral ring to said core structure, wherein said core, ring, and cover rotational axes are all coincident to one another.2. A material trimming system according to ...

Laying machine

The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement ( 2 ) for making a trench ( 5 ) in the ground, a consolidation and laying means ( 3 ) being arranged behind the blade arrangement ( 2 ), for clearing and safeguarding the trench ( 5 ) from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid.

CORNER SAW

A cutting apparatus for cutting corner pieces formed of stone or other materials for use as building faces or for cutting flat pieces is disclosed herein. The cutting apparatus includes a frame with a first and a second conveyor operatively attached to the frame. The first and the second conveyors are configured to carry a workpiece from a first end of the frame to the second end of the frame. The first conveyor is disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus. The second conveyor is disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, wherein the second conveyor is positioned perpendicularly to the first conveyor so as to form a V-shaped channel therewith. The cutting apparatus further includes a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor and a second cutting blade operatively attached to the frame and positioned generally parallel to the second conveyor. 1. A cutting apparatus comprising:a frame including a first end and a second end;a first conveyor operatively attached to the frame, the first conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the first conveyor disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus;a second conveyor operatively attached to the frame, the second conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the second conveyor disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, the second conveyor positioned perpendicularly to the first conveyor so as to form a V-shaped channel with the first conveyor;a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor; anda second cutting blade operatively attached to the frame and positioned generally ...

Intelligent Core-Drilling End Detection

A control method for using a core drilling system is disclosed. In an embodiment the method includes detecting a predetermined drilling situation on the basis of the attainment of a predetermined threshold value for at least one predetermined corresponding drilling parameter and ending the core drilling operation by selecting a reverse-travel mode for removing the drilling tool from the borehole if the advancing device does not reach a predetermined threshold value for a predetermined corresponding distance value in a direction and the core drilling machine does not reach a predetermined threshold value for at least one predetermined corresponding drilling parameter or continuing the core drilling operation by selecting a predetermined operating mode if the advancing device reaches a predetermined threshold value for a predetermined corresponding distance value in a direction and the core drilling machine reaches a predetermined threshold value for at least one predetermined corresponding drilling parameter. 17.-. (canceled)8. A control method for using a core drilling system that includes a core drilling machine with a drilling tool for generating a borehole in a material and an advancing device for driving the core drilling machine along a machine-holding device , comprising the steps of:ending a core drilling operation by selecting a reverse-travel mode for removing the drilling tool from the borehole if the advancing device does not reach a first predetermined threshold value for a predetermined corresponding distance value in a direction and the core drilling machine does not reach a second predetermined threshold value for a predetermined corresponding drilling parameter; orcontinuing the core drilling operation by selecting a predetermined operating mode if the advancing device reaches the first predetermined threshold value for the predetermined corresponding distance value in the direction and the core drilling machine reaches the second predetermined ...

CORDLESS POWER CUTTER

The cordless power cutter that is lightweight and weight-balanced between a power section housing a battery pack as a power source and a cutting section including the motor in a belt-free drive system and rotatable disk blade. The weight balancing of the cordless power cutter allows the tool to remain parallel to a horizontal surface, such as the ground, without tilting, when the operator lifts and holds the tool by only a gripping or transverse portion of the lifting handle. The motor has a motor axis that is not perpendicular to the disk axis and that is rearward of the disk axis to provide a depth of cut. The weight-balance and motor positioning allows the cordless power cutter to achieve ease of handling and operation. 1. A cordless power cutter , comprising:a housing disposed along a longitudinal axis of the cordless power cutter;a power source removably supported by the housing at one end of the housing;a motor mounted to a longitudinally opposite end of the housing, the motor having a motor shaft rotatable about a motor axis, the motor being powered by the power source;a belt-free drive system proximal to and driven by the motor at said longitudinally opposite end of the housing;a disk having a disk axis not perpendicular to the motor axis, the disk being rotated by the belt-free drive system;a lifting handle mounted to the housing, the lifting handle having a lifting handle axis that is arranged traverse to the longitudinal axis; anda center of gravity defining a balancing plane, wherein the lifting handle axis is on the balancing plane.2. The cordless power cutter according to claim 1 , wherein the disk axis is parallel to the motor axis.3. The cordless power cutter according to claim 1 , wherein the belt-free drive system comprises the motor.4. The cordless power cutter according to claim 1 , wherein the belt-free-drive system comprises the motor shaft claim 1 , an output gear driven by the motor shaft claim 1 , and an output shaft driven by the output ...

CERAMIC AND MASONRY POWER SAW

A ceramic and masonry power saw includes a cutting head assembly including a circular saw blade, an electric motor for driving the saw blade, and a support member for supporting both the saw blade and the motor; a rectangular box shaped frame including two hollow members at front and rear ends respectively, two side members interconnecting the end members, two side supports interconnecting the end members, a tray removably disposed on the frame by passing through the hollow member, and a first coolant pan communicating with the tray; a rail assembly disposed on the frame; and a cutting table including a main platform slidably disposed on the rail assembly, an auxiliary platform secured to one side of the main platform, and a second coolant pan releasably secured to the main platform. 1. A ceramic and masonry power saw comprising:{'b': 10', '12', '13', '12', '14', '12', '13, 'a cutting head assembly () including a circular saw blade (), an electric motor () for driving the saw blade (), and a support member () for supporting both the saw blade () and the motor ();'}{'b': 30', '31', '36', '31', '35', '31', '33', '30', '31', '32', '33, 'a rectangular box shaped frame () including two hollow members () at front and rear ends respectively, two side members () interconnecting the end members (), two side supports () interconnecting the end members (), a tray () configured to removably dispose on the frame () by passing through the hollow member (), and a first coolant pan () communicating with the tray ();'}{'b': 40', '30, 'a rail assembly () disposed on the frame (); and'}{'b': 20', '21', '40', '22', '21', '23', '21, 'a cutting table () including a main platform () slidably disposed on the rail assembly (), an auxiliary platform () secured to one side of the main platform (), and a second coolant pan () releasably secured to the main platform ().'}2505051303737513050. The ceramic and masonry power saw of claim 1 , further comprising two folding support legs () pivotably ...

POWER TOOL

A power tool includes a housing, a saw blade for cutting a workpiece, a motor for driving the saw blade to rotate about a first axis, a circuit board for controlling the motor, a heat sink for cooling, and a base plate being formed with a flat surface for contacting with the workpiece during cutting. The housing includes a first containing portion being formed with a first container for containing the motor, a second containing portion extended along a direction substantially parallel to the flat surface from one of the two ends of the first containing portion along a direction substantially perpendicular to the first axis. The second containing portion is formed with a second container which is communicated with the first container. The circuit board and the heat sink are disposed in the second container. 1. A power tool , comprising:a housing;a saw blade for cutting a workpiece;a motor for driving the saw blade to rotate about a first axis;a circuit board for controlling the motor;a heat sink for cooling; anda base plate being formed with a flat surface for contacting with the workpiece during cutting;wherein the housing comprises a first containing portion being formed with a first container for containing the motor and a second containing portion extended along a direction substantially parallel to the flat surface from a first one of two ends of the first containing portion along a direction substantially perpendicular to the first axis and wherein the second containing portion is formed with a second container which is communicated with the first container with the circuit board and the heat sink being disposed in the second container.2. The power tool of claim 1 , wherein the second containing portion is disposed at a center of the motor in a direction substantially perpendicular to the flat surface.3. The power tool of claim 1 , wherein the second containing portion is aligned with the first containing portion on an end that is removed from the saw blade in ...

METHOD AND SYSTEM OF UTILIZING A WORK TOOL ON A SUSPENDED WORK PLATFORM

A method and system for performing work from a suspension work platform incorporating a work tool attached to an articulating arm system. 1. A method for performing work at elevation , comprising:{'b': 1300', '1430', '1300', '1300, 'a) elevating a suspension work platform () on at least one suspension work platform cable to an initial working height of at least six feet, wherein at least one suspension work platform hoist system lift () is attached to the suspension work platform () and cooperates and engages the suspension work platform cable to adjust the elevation of the suspension work platform ();'}{'b': 200', '500', '200', '1300', '500', '200, 'b) supporting a work tool (), having a work tool weight, from an articulating arm system () attached to the work tool () and the suspension work platform (), wherein the articulating arm system () moves the work tool () in at least two axis;'}{'b': '200', 'c) adjusting the work tool () position to a desired initial Y-axis position by the application of an external elevation adjustment force that is less than twenty percent of the work tool weight;'}{'b': '200', 'd) adjusting the work tool () position to a desired initial Z-axis position;'}{'b': 200', '200, 'e) performing work with the work tool () at the initial Z-axis position and adjusting the work tool () position from a first X-axis position to a second X-axis position while performing the work;'}{'b': '200', 'f) moving the work tool () to a second Y-axis position by the application of an external elevation adjustment force that is less than twenty percent of the work tool weight;'}{'b': '200', 'g) adjusting the work tool () position to a second Z-axis position; and'}{'b': '200', 'h) performing work with the work tool () at the second Z-axis position.'}2500200. The method of claim 1 , wherein the articulating arm system () moves the work tool () in at least three axis.3200. The method of claim 2 , further including the step of adjusting the work tool () position to ...

Automatic Control of Assemblies of a Water Supply System

A method for controlling a water supply system for use with a machine tool is disclosed. The water supply system includes a housing with an interface for supplying electrical energy, a water tank, a line, a pump device, a current-measuring device, a water-pressure-measuring device, and a control device. The method includes activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a predetermined threshold value, and deactivating the pump device if the machine tool is connected and the motor current undershoots a predetermined threshold value; or activating the pump device if the machine tool is not connected and the water pressure in the line undershoots a predetermined threshold value and deactivating the pump device if the machine tool is not connected and the water pressure exceeds a predetermined threshold value. 1. (canceled)2. A method for controlling a water supply system for use with a machine tool , the water supply system comprising:a housing with an interface for supplying the machine tool with electrical energy;a water tank for storing water in a positionable manner in the housing;a line for transporting the water from the water tank to the machine tool;a pump device for conveying the water from the water tank to the machine tool via the line;a current measuring device, wherein a motor current of the machine tool is measurable by the current measuring device;a water-pressure measuring device, wherein a water pressure in the line is measurable by the water-pressure measuring device; anda control device coupled to the pump device, the current measuring device, and the water-pressure measuring device;and comprising the steps of:activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a first predetermined threshold value; anddeactivating the pump device if the machine tool is connected to the interface and the motor ...

APPARATUS FOR CUTTING SLAB MATERIAL

An apparatus for cutting slab material comprising a working table to support the slabs to be cut during working; a working unit comprising disk cutting means and water-jet cutting means; and a unit for moving the working unit above the working table. The movement unit comprises a horizontal translation unit to move the working unit along two directions parallel to the working table and perpendicular to each other; a vertical translation unit to move the working unit along a direction perpendicular to the working table; a first rotation unit to rotate the working unit about a first axis, vertical and substantially perpendicular to the working table; and a second rotation unit to rotate the working unit about a second axis, inclined with respect to the first axis. Said disk cutting means and water-jet cutting means are integral and therefore the second rotation unit rotates simultaneously with the said cutting means. 1. Apparatus for cutting slab material comprising:a working unit comprising disk cutting means and water jet cutting means, said disk cutting means and said water-jet cutting means being integral with each other;a working table adapted to support slabs to be cut during working, the working table comprising a tank closed by an interchangeable metallic grid, on top of which a sacrificial element is placed and is adapted to prevent contact between the disk cutting means and the grid; anda unit for moving the working unit above the working table, the moving unit comprising:a horizontal translation unit adapted to move the working unit along two directions parallel to the working table, the two directions being perpendicular to each other;a vertical translation unit adapted to move the working unit along a direction perpendicular to the working table, either toward or away from the working table;a first rotation unit adapted to rotate the working unit about a first axis which is vertical and substantially perpendicular to the working table; anda second ...

Table saw

A table saw includes a base, a work table having a cutting opening, a tank for receiving cooling liquid, a blade partly extending out from the cutting opening, and a guard assembly. The guard assembly includes a guard for covering the blade and for moving upwards under the action of a workpiece. In a working condition, at least a portion of the guard abuts against the workpiece, and the workpiece can slide relative to the guard. The guard has a guiding wall which abuts against the workpiece in the working condition and which guides the cooling liquid into a kerf in the workpiece formed by the blade. Because the table saw collects the cooling liquid brought by the blade and returns it to the tank for receiving the cooling liquid through the cutting opening of the work table, the table saw effectively controls the cooling liquid splashed during the cutting operation of the workpiece and prevents the cooling liquid from splashing to dirty the operator, the work table, and the workpiece, saves the time of cleaning the workpiece after cutting, and enhances the operating comfort of the operator.

Early Signaling of an Imminent Interruption of the Water Supply By a Water Supply System

A method for controlling a water supply system to be used with a machine tool, in particular a core boring device, is disclosed. The water supply system includes a water reservoir for storing water, a line for transporting water from the water reservoir to the machine tool, where the line contains a first section and a second section, a pump device for pumping water from the water reservoir to the machine tool, a signaling device, at least one sensor for measuring at least one parameter of the pump device, and a controller. The method includes transmitting a signal if at least one parameter of the pump device falls below a specified threshold for a specified duration and at least one specified water quantity for supplying the machine tool is available. 14.-. (canceled)5. A method for controlling a water supply system for use with a machine tool , wherein the water supply system comprises:a water reservoir, wherein the water reservoir stores water;a line, wherein the water is transportable from the water reservoir to the machine tool via the line and wherein the line includes a first section and a second section;a pump device, wherein the water is deliverable from the water reservoir to the machine tool via the line by the pump device;a sensor, wherein at least one parameter of the pump device is measurable by the sensor;a control device coupled to the sensor; anda signaling device coupled to the control device; 'transmitting a signal by the control device to the signaling device when the at least one parameter of the pump device measured by the sensor falls below a predetermined threshold for a predetermined duration and at least one predetermined water quantity is available for supplying the machine tool.', 'and comprising the step of6. The method according to claim 5 , wherein the at least one parameter of the pump device is a water pressure in the pump device.7. The method according to claim 5 , wherein the at least one parameter of the pump device is an input ...

SAWING TOOL HAVING A PLURALITY OF DIAMOND SAW BLADES FOR FORMING A SURFACE STRUCTURE ON A ROAD SURFACE

The invention relates to a sawing tool () for forming a surface structure on a road surface, at least having: a shaft () and a plurality of diamond saw blades (), wherein each diamond saw blade () has a disc-shaped core with a hole for placing on the shaft (), and a segment () which is arranged on an outer circumference of the core, wherein the diamond saw blades () are arranged on the shaft () by way of the disc-shaped core. The invention provides for the segments () of adjacent diamond saw blades () to be in surface contact on a longitudinal side (), wherein each segment () is formed from at least two layers (i=1 . . . 6) that adjoin one another in the axial direction and each extend in the radial and axial direction, wherein layers (i=1 . . . 6) of the segment that axially adjoin one another each have different wear resistances (VF, VF, VF) and the wear resistance (VF, VF, VF) of the layers (i=1 . . . 6) in the axial direction alternates over the entire segment (), wherein a furrow is able to be formed in each case by two layers (i=1 . . . 6) that axially adjoin one another, in order to set a grip and a level of noise of the road surface, and layers (i=1 . . . 6) that axially adjoin one another of adjacent segments () have different wear resistances (VF, VF, VF) in order to form an alternating layer structure over the entire sawing tool (). 17111410. Sawing tool () for forming a surface structure ( , ) on a road surface () , having at least:{'b': 6', '1', '1', '2', '5', '6', '3', '2', '1', '2', '6, 'a shaft () and a plurality of diamond saw blades (), wherein each diamond saw blade () has a disc-like core () having a hole () for placing on the shaft (), and a segment () which is arranged on an outer periphery of the core (), wherein the diamond saw blades () are arranged with the disc-like core () on the shaft (),'}characterised in that{'b': 3', '1', '13', '3', '8', '8', '3', '8', '3', '8', '11', '10', '8', '3', '7, 'i': i;', 'i;', 'i;', 'i;', 'i;, 'sub': 1', '2 ...

ANGLED CONCRETE SAW AND ANGLED CONCRETE SAW KIT ALONG WITH A METHOD OF USING THE SAME

A concrete saw configured to cut an underlying surface at an angle including a concrete saw having a saw frame, a saw blade, a motor to drive the saw blade and a platform structure to support the saw frame and allow movement of the concrete saw on an underlying surface, the platform structure including an angled support structure for supporting the saw frame relative to the platform structure at a platform angle, and a method of using the concrete saw to reduce falling concrete slabs or debris. 1. A concrete saw configured to cut an underlying surface at an angle , the concrete saw comprising:a saw frame extending between a front end and a rear end, the saw frame includes sides extending between the front end and the rear end that extend in a longitudinal direction, the front end facing a front side of the concrete saw and the rear end facing a rear side of the concrete saw, the saw frame generally extending in a saw frame plane that is generally parallel to the longitudinal direction;a saw blade that is rotatably mounted relative to the saw frame and configured to be driven wherein the saw blade is rotatable about a saw blade axis, the saw blade axis being generally parallel to the saw frame plane;a motor supported by the saw frame, the motor having a motor output shaft for driving the saw blade;a platform structure configured to support the saw frame, the platform structure having at least one rear wheel and at least one front wheel for facilitating movement of the concrete saw on an associated surface, the at least one front wheel rotatable about a first wheel axis and the at least one rear wheel rotatable about a rear wheel axis, the platform structure including an angled support structure, the angle support structure supporting the saw frame relative to the platform structure at a platform angle.a blade height adjustment system for adjusting a blade cutting depth, the blade height adjustment system being operably connected to the saw frame and extending between ...

TOOL AND DEVICE FOR REMOVAL OF MATERIAL ON SURFACES

The invention proposes a tool and device, with the aid of which it is possible to remove the surface of walls, ceilings and floors also in the corners of contaminated interiors. 1. A tool for the removal of surfaces , comprising a drive shaft , wherein the drive shaft is rotatably mounted at a first end , wherein a plurality of circular saw blades are disposed at the drive shaft , and wherein the saw teeth of a last saw blade disposed at a second end of the drive shaft opposite of the first end project in the axial direction beyond the second end of the drive shaft , wherein the saw blades are connected to the drive shaft in a rotationally fixed manner , wherein the drive shaft comprises at least one longitudinal groove and a collar , wherein spacer rings are disposed between the saw blades , and wherein the spacer rings and the saw blades have through holes and a central opening , characterized in that the spacer rings and the saw blades have central openings , that at the central openings of the spacer rings one or a plurality of lugs are configured , and that the lugs are formed in a complementary manner to the longitudinal groove or grooves of the drive shaft.2. (canceled)3. The tool as recited in claim 1 , characterized in that a collar of the drive shaft or a clamping piece slid onto drive shaft has fastening means claim 1 , in particular internal threads in that the fastening means interact with clamping screws in such a manner that they fix the saw blades and the spacer rings in the axial direction on the drive shaft and connect them in a rotationally fixed manner to the drive shaft.4. (canceled)5. The tool as recited in claim 1 , characterized in that the last saw blade at an end face is fastened in a centered and/or rotationally fixed manner at the second end of the drive shaft.6. The tool as recited in claim 3 , characterized in that the last saw blade is fastened with the aid of screws or a nut to the end face at the second end of the drive shaft.7. The ...

Powered saw including dust capture apparatus

A novel cutting method and apparatus includes a cutting blade adapted to consistently and easily form a desirable kerf in a concrete substrate while capturing substantially all resulting concrete dust.

Device for Cutting a Substrate and Method for Controlling Such a Cutting Device

A device for cutting a substrate along a cutting line is disclosed. The device includes a saw unit with a saw blade, which can be rotated around an axis of rotation, a guide carriage for moving the saw unit along a guide rail, and a control device for controlling the saw unit and the guide carriage. A marking device is provided for marking an end point of the cutting line. 1. A device for cutting a substrate along a cutting line , comprising:a saw unit with a saw blade, wherein the saw blade is rotatable around an axis of rotation;a guide carriage, wherein the saw unit is movable by the guide carriage along a guide rail;a control device, wherein the saw unit and the guide carriage are controllable by the control device; anda marking device associated with the guide rail, wherein an end point of the cutting line is markable by the marking device;wherein the marking device has an optical marking element, a signal generator, and a detector device, wherein the end point is optically markable by the optical marking element, wherein a position signal corresponding to a position of the end point or a position of a reference point which is arranged at a defined distance from the end point is emittable by the signal generator, and wherein the position signal is receivable by the detector device.2. The device according to claim 1 , further comprising a second marking device associated with the guide rail claim 1 , wherein a second end point of the cutting line is markable by the second marking device.3. The device according to claim 2 , wherein the marking device and the second marking device have a common detector device.4. The device according to claim 1 , wherein the detector device is connectable to the control device and wherein information corresponding to the position signal is transmittable to the control device by the detector device.5. The device according to claim 1 , wherein the optical marking element is movable on the guide rail by a movement device.6. The ...

CORNER SAW

A cutting apparatus for cutting corner pieces formed of stone or other materials for use as building faces or for cutting flat pieces is disclosed herein. The cutting apparatus includes a frame with a first and a second conveyor operatively attached to the frame. The first and the second conveyors are configured to carry a workpiece from a first end of the frame to the second end of the frame. The first conveyor is disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus. The second conveyor is disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, wherein the second conveyor is positioned perpendicularly to the first conveyor so as to form a V-shaped channel therewith. The cutting apparatus further includes a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor and a second cutting blade operatively attached to the frame and positioned generally parallel to the second conveyor. 1. A cutting apparatus comprising:a frame including a first end and a second end;a first conveyor operatively attached to the frame, the first conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the first conveyor disposed at an angle of about 45 degrees to a ground surface supporting the cutting apparatus;a second conveyor operatively attached to the frame, the second conveyor configured to carry a workpiece from the first end of the frame to the second end of the frame, the second conveyor disposed at an angle of about 45 degrees to the ground surface supporting the cutting apparatus, the second conveyor positioned perpendicularly to the first conveyor so as to form a V-shaped channel with the first conveyor;a first cutting blade operatively attached to the frame and positioned generally parallel to the first conveyor; anda second cutting blade operatively attached to the frame and positioned generally ...

BLADE HEAD, BLADE AND METHOD FOR ELIMINATING SPACERS IN MULTIPLE BLADE STACKS

A product and method to eliminate blade spacers in blade heads or stacks that are formed by multiple blades fixed relative to one another including a plurality of spacerless blades wherein the spacerless blades include a blade core with a blade core thickness that is greater than a segment thickness of grinding and/or cutting segments fixed to the blade core to allow core-to-core contact between adjacent blades in the plurality of spacerless circular blades while also producing segments spacings in the plurality of segments between the adjacent blades without the need for blade spacers. 1. A blade head for use in grinding or cutting that eliminates spacers between the blades of the blade head , the blade head comprising a stack plurality of circular blades forming an overall blade stack of the blade head , the stack plurality configured to rotate together about a head axis , the stack plurality forming the blade stack extending between a first stack extent and an axially opposite second stack extent , the stack plurality including a plurality of spacerless circular blades , each spacerless blade of the plurality of spacerless circular blades having a spacerless blade core with a first side core surface and a second side core surface that is axially opposite of the first side core surface , the first and second side core surfaces defining a blade core thicknesses , the spacerless blade core having a core thickness center between the first and second side core surfaces , the spacerless blade core further including a circumferential core extent extending about a spacerless blade axis wherein the spacerless blade axis is coaxial with the head axis , said each spacerless blade further including a plurality of grinding or cutting segments circumferentially spaced radially outwardly of the circumferential extent , the plurality of segments each having a first side segment surface and a second side segment surface that is axially opposite of the first side segment surface ...

CUTTING SECTION FOR A DRILL BIT

A cutting section () which is connectable to a drill shaft section via a releasable connecting device. The cutting section includes a first open tubular element () which is in the form of a first hollow cylinder, a second closed tubular element () which is in the form of a second hollow cylinder, and one or more drill segments () which are connected to the first open tubular element () and to the second closed tubular element (). 111-. (canceled)12: A cutting section for a drill bit , the cutting section being connectable to a drill shaft section of the drill bit via a releasable connection , the cutting section comprising:a first open tubular element in the form of a first hollow cylinder with a first outer lateral surface, a first inner lateral surface, a first lower end surface and a first upper end surface, and having a first hollow cylinder height, a first inside diameter and a first outside diameter;a second closed tubular element in the form of a second hollow cylinder with a second outer lateral surface, a second inner lateral surface, a second lower end surface and a second upper end surface, and having a second hollow cylinder height, a second inside diameter and a second outside diameter, wherein the first outside diameter is larger than or equal to the second inside diameter, and;at least one drill segment;the first open tubular element being pushed into the second closed tubular element, and the at least one drill segment being connected to the first open tubular element and to the second closed tubular element.13: The cutting section as recited in wherein the first lower end surface and the second lower end surface are aligned flush.14: The cutting section as recited in wherein in that the at least one drill segment is connected to the first lower end surface and to the second lower end surface.15: The cutting section as recited in wherein in the second closed tubular element has at least one slot-shaped recess claim 12 , the at least one slot-shaped ...

Dust Collecting Concrete Saw

A concrete saw for cutting a relief slot in a concrete slab surface, the concrete saw incorporating front and rear hand truck components having lower bases and upwardly extending handles, each handle being fixedly attached to one of the hand truck bases; front and rear pluralities of wheels respectively fixedly attached to and extending downwardly from the front and rear hand trucks' bases; a motor and cutting wheel combination supported upon the front hand truck's base; a motor powered vacuum supported upon the rear hand truck; a vacuum housing enshrouding an upper end of the cutting wheel; a vacuum tube operatively interconnecting the motor powered vacuum and the vacuum housing; and a releasable latch interconnecting the front and rear hand trucks so that forward propulsion of the front hand truck forwardly pulls the rearward hand truck. 1. A concrete saw for cutting a relief slot in a concrete slab surface , said saw comprising:(a) front and rear hand trucks, each hand truck having a lower base and an upwardly extending handle;(b) front and rear pluralities of wheels respectively fixedly attached to and extending downwardly from the front and rear hand trucks' bases;(c) a motor and cutting wheel combination operatively supported upon the front hand truck's base;(d) a motor powered vacuum fixedly attached to a hand truck component selected from the rear hand truck's handle and the rear hand truck's base;(e) a vacuum housing enshrouding an upper end of the cutting wheel;(f) a vacuum tube operatively interconnecting the motor powered vacuum and the vacuum housing; and(g) a trailering latch interconnecting the front and rear hand trucks so that forward propulsion of the front hand truck forwardly pulls the rearward hand truck.2. The concrete saw of wherein the trailering latch comprises right and left releasable latches.3. The concrete saw of wherein the rear hand truck's base has a proximal end and a distal end claim 2 , wherein the rear plurality of wheels ...

Drive Shaft with Insertion Device for Guiding Cooling Water

A drive shaft for a machine tool, for example a core drilling machine, able to be connected to a drilling tool, in particular a core bit, is disclosed. The drive shaft contains a cavity which substantially extends over the whole length of the drive shaft and along the rotational axis. The cavity contains at least one inflow opening where, through the at least one inflow opening, water can be fed along the drive shaft into the drilling tool. In the drive shaft, an insertion device is provided in the cavity, through which water is guided for cooling the drive shaft, firstly, in a first direction and then in a second direction, where the water comes into direct contact with the inner side of the cavity at least in the first direction. 110.-. (canceled)11. A drive shaft for a machine tool which is connectable to a drilling tool , comprising:a cavity, wherein the cavity substantially extends over an entire length of the drive shaft and along a rotational axis of the drive shaft and wherein the cavity contains an inflow opening through which water is feedable along the drive shaft into the drilling tool; andan insertion device disposed in the cavity, wherein the water is guidable through the insertion device to cool the drive shaft first in a first direction and then in a second direction, wherein the water has direct contact with an inner wall of the cavity at least in the first direction.12. The drive shaft according to claim 11 , wherein the insertion device contains a guide element with a first surface for guiding the water in the first direction and a second surface for guiding the water in the second direction.13. The drive shaft according to claim 11 , wherein the guide element is configured spirally along the cavity.14. The drive shaft according to claim 11 , wherein the guide element is configured as a planar flat profile.15. The drive shaft according to claim 12 , wherein the guide element is configured as a bent flat profile and wherein the first surface has a ...

DEVICE AND METHOD FOR REMOVING CONTAMINATED MATERIAL

The present invention relates to a device () and a method for removing contaminated material from a wall, the device () comprising 1. Device for removing contaminated materials from a wall , the device comprisingsuction plates which fix a support system of the device to the wall by means of a negative pressure, anda rotating tool which has impact cutters in the circumferential direction, characterized in that disc-like saw blades spaced from one another are arranged in a second rotating tool upstream of the rotating tool in the working direction.2. Device according to claim 1 , characterized in that the saw blades comprise diamond discs.3. Device according to claim 1 , characterized in that an axis of rotation of the first rotating tool and an axis of rotation of the second rotating tool are arranged parallel to each other and behind each other in a processing device.4. Device according to claim 1 , characterized in that the axis of rotation of the first rotating tool and the axis of rotation of the second rotating tool are arranged at an angle greater than 0° to each other.5. Device according to claim 4 , characterized in that the axis of rotation of the first rotating tool and the axis of rotation of the second rotating tool are aligned at an angle of 90° to each other.6. Device according to one of the preceding claims claim 4 , characterized in that the device can be arranged in the support system in a height-adjustable manner and that the support system can be moved on the floor by way of a dolly.7. Device according to claim 6 , characterized in that the support system has telescopically designed columns which can be extended in a vertical manner.8. Device according to claim 1 , characterized in that the drive motors for both rotating tools each comprise a hydraulic drive claim 1 , whereby a hydraulic pump for the hydraulic drive is arranged outside of the processing device.9. Device according to claim 8 , characterized in that the speed of both rotating tools ...

Stone saw

A stone saw for sawing rod-like drilling samples. The stone saw comprises a circular blade rotated by means of a rotation axle. A sample is fed against the blade and flushing fluid is sprayed on a sawing site. The stone saw further comprises collection means for collecting sawing sludge formed during sawing. 1. A stone saw for sawing rod-like samples and comprising:a frame;a rotation axle;a circular blade fastened to the rotation axle;a rotation device for rotating the rotation axle about its longitudinal axis;a feeding device, with which the sample to be sawed is moved in relation to the circular blade during sawing;a flushing system for feeding pressurized flushing fluid to the sawing site;and collection means for collecting sawing sludge formed during sawing.2. The stone saw as claimed in claim 1 , whereinthe collection means comprise at least one collection chute that is arranged in connection with the feeding device;and the collection chute is located below the sawing site, whereby flushing fluid fed to the sawing site is arranged to flow under gravity to the collection chute.3. The stone saw as claimed in claim 1 , whereinthe collection means comprise at least one collection chute that is arranged in connection with the feeding device;and the collection chute is located below the sawing site, whereby flushing fluid fed to the sawing site is arranged to flow under gravity to the collection chute;and the collection chute is arranged to be inclined in relation to the horizontal direction and the collection chute comprises a top end and a bottom end, whereby the flushing fluid that has flown into the collection chute is arranged to flow under gravity toward said bottom end.4. The stone saw as claimed in claim 1 , whereinthe collection means comprise at least one collection chute that is arranged in connection with the feeding device;and the collection chute is located below the sawing site, whereby flushing fluid fed to the sawing site is arranged to flow under ...

Stone saw

A stone saw for sawing drilling samples. The stone saw includes a rotation axle provided with an axial flushing channel. On the rotation axle a circular blade is arranged. On at least one side of the circular blade is a blade flange, which includes several spray openings that are connected to the flushing channel of the rotation axle. Flushing fluid may then be sprayed on a sawing site.

Saw blade having noise and stress-reduction structure

A saw blade is provided having a noise and stress-reduction structure, the saw blade having a structure in which a plurality of diamond segments are mounted at a first unit and the first unit has a second unit, thereby reducing the noise generated during a cutting operation, while increasing heating performance with a relatively simple configuration, and simultaneously dispersing impact stress so as to prevent the occurrence of cracks.

CORE DRILL BIT ASSEMBLY

A core drill bit assembly is disclosed and includes a shank in which a support sleeve can be removably engage. A core tube can be installed around the support sleeve within the shank. The core tube is removably engaged with the shank and the support sleeve. 1. A core drill bit comprising:a shank;a support sleeve configured to be disposed within an opening in the shank; anda core tube comprising a head and a ring, wherein at least a portion of the head is configured to be removably disposed between the support sleeve and the base.2. The core drill bit of claim 1 , wherein the shank comprises a longitudinal bore extending from a proximal end of the shank to a distal end of the shank.3. The core drill bit of claim 2 , wherein the longitudinal bore comprises a fluid transmission portion having a first diameter and a support sleeve engagement portion having a second diameter.4. The core drill bit of claim 3 , wherein the shank comprises a body having a base adjacent to the proximal end of the shank and a collar adjacent to the proximal end of the shank and the collar comprises at least one radial bore extending through an outer wall of the body.5. The core drill bit of claim 4 , wherein the at least one radial bore comprises a first radial bore and the first radial bore extends into the support sleeve engagement portion of the longitudinal bore.6. The core drill bit of claim 5 , further comprising a first fastener configured to engage the first radial bore.7. The core drill bit of claim 6 , wherein the support sleeve comprises a first radial bore formed in an outer wall of the support sleeve and the first radial bore of the support sleeve is configured to align with the first radial bore of the collar when the support sleeve is disposed within the support sleeve engagement portion of the longitudinal bore within the shank.8. The core drill bit of claim 1 , wherein the core tube comprises at least one radial bore that extends through an outer wall of the body of the core ...

Machine for cutting slabs, particularly made of marble, granite, glass and composite materials

The machine comprises: one base frame; one worktop for at least one slab, associated with the base frame; one cutting head adapted to cut the slab, associated with the base frame by interposition of one transverse frame moveable along a first direction, the cutting head being moveable on the transverse frame along a second direction transverse with respect to the first direction; gripping means of the slab, associated with the base frame and moveable sliding with respect to the base frame along the first direction; wherein the gripping means are associated with the transverse frame and moveable on it along the second direction independently with respect to the cutting head.

CONCRETE SAW

A concrete saw is disclosed and includes a frame having a platform and a leg pivotably coupled to the platform at a pivot axis, at least two rear wheels coupled to the platform at the pivot axis, at least one rear wheel coupled to an end of the leg distanced from the pivot axis, a power and drive assembly disposed on the platform, wherein the power and drive assembly includes an electric motor and a battery pack coupled to the electric motor to provide direct current power to the electric motor, and a cutting assembly driven by the power and drive assembly to cut a groove in a work surface as the concrete saw is moved across the work surface. 1. A concrete saw comprising:a frame having a platform and a leg pivotably coupled to the platform at a pivot axis;at least two rear wheels coupled to the platform at the pivot axis;at least one rear wheel coupled to an end of the leg distanced from the pivot axis;a power and drive assembly disposed on the platform, wherein the power and drive assembly includes an electric motor and a battery pack coupled to the electric motor to provide direct current power to the electric motor; anda cutting assembly driven by the power and drive assembly to cut a groove in a work surface as the concrete saw is moved across the work surface.2. The concrete saw of claim 1 , further comprisinga handle assembly extending from the platform; anda control interface coupled to the handle assembly, wherein the control interface controls the operation of the power and drive assembly.3. The concrete saw of claim 2 , further comprisinga cage fixed to the platform and surrounding the power and drive assembly; anda guide arm assembly extending from the cage, wherein the guide arm assembly includes a pivoting guide arm having a guide wheel attached to an end of the pivoting guide arm and wherein the guide arm assembly is movable between a storage position in which the guide wheel is spaced apart from the work surface and an operating position in which the ...

TILE CUTTER WITH COLLAPSIBLE CUTTING HEAD ASSEMBLY

A tile cutter includes a base, and a cutting head assembly including a supporting arm having one end pivotally connected to the base and an opposite end connected to the saw base for enabling the cutting head assembly to be biased relative to the base and selectively positioned in a standby position, a cutting position or a received position. When shifting the cutting head assembly from the standby position to the cutting position, the supporting arm is received by a stopper to limit the cutting depth of the cutting head assembly. When shifting the cutting head assembly from the cutting position to the received position, the stopper is moved to release the supporting arm. When the cutting head assembly is shifted to the received position, a part of the saw base and the saw blade are received in a sink in the base. 1. A tile cutter , comprising:a base comprising a sink;a worktable movably mounted on said base above said sink;a cutting head assembly comprising a saw base, a saw blade pivotally mounted to said saw base and a supporting arm, said supporting arm having one end thereof pivotally connected to said base and an opposite end thereof connected to said saw base so that said cutting head assembly is biasable between a standby position, a cutting position, and a received position where a part of said saw base and said saw blade are received in said sink of said base; anda stopper connected to said base and movable between a stoppage position where said stopper receives said supporting arm of said cutting head assembly to hold said cutting head assembly in said cutting position and a release position where said stopper is kept away from said supporting arm for allowing said cutting head assembly to be biased between said cutting position and said received position.2. The tile cutter as claimed in claim 1 , wherein said base comprises a bracket claim 1 , said bracket comprising an arched sliding slot; said cutting head assembly further comprising a guide member ...

SUPPORT ASSEMBLY FOR A CORE DRILL

A support assembly for a core drill which utilizes an improved high strength spoked reinforcer. The reinforcer may be removably mounted a core drill tube by fasteners. A drive connection is removably mounted and centrally located on an outer disc of a pair of discs. The drive connection is adapted to connect with a drive shaft to cause rotation of the tube. The assembly can also include a split in the disc when the high strength spoked reinforcer is not welded thereto, thereby providing a means of water control. The high strength spoked reinforcer can be a separate piece that is bolted to the disc or can be integrally formed as one piece therewith. 1. A drive assembly having a reinforcement structure for a tubular core drill , the drive assembly comprising a tool coupling element having an axis aligned with a center axis for receiving from a first direction a drive tool element for a core drill , a structure for supporting a cylindrical core , a plurality of non-planar extensions extending from an area near a center of the tool coupling element to an area adjacent the structure for supporting the cylindrical core.2. The drive assembly of wherein at least one extension includes multiple walls spaced from each other.3. The drive assembly of wherein at least one extension forms a channel in cross-section.4. The drive assembly of wherein at least one of the extensions forms a polygon structure.5. The drive assembly of wherein at least one of the plurality of non-planar extensions has a rectangular cross-section profile.6. The drive assembly of wherein the at least one non-planar extension having a rectangular cross-section profile is secured to a spoke.7. The drive assembly of wherein at least one of the plurality of non-planar extensions has a triangular cross-section profile.8. The drive assembly of further including a plate on upper portions of the plurality of non-planar extensions.9. The drive assembly of wherein the plate is welded to upper portions of the ...