Устройство для отрезных и зачистных работ

Cutter grinding machine - is so clamped in holder structures that it can move along all three space axes

Movement of the machine in the X- and y- axes is by means of a horizontally displaceable slide, and by a vertical variable in the z-axes. Horizontal and vertical variables constitute the unit in which the machine is clamped. Scaling on the movement ranges and corresp. stops contribute to high precision and cleanness of the cut and the grinding path. USE - To cut and grind solid workpieces.

Motorisch angetriebenes Winkelschleifgerät

Die Erfindung betrifft ein motorisch, insbesondere elektromotorisch angetriebenes Winkelschleifgerät (4), mit einem die motorischen Komponenten aufnehmenden Motorgehäuse (18) und einem Getriebekomponenten aufnehmenden Getriebegehäuse (14), mit einer Motorwelle (26) und einer Werkzeugspindel (36), die über eine ein Tellerrad (34) aufweisende Winkelgetriebeanordnung (22) in einem Winkel zueinander orientiert sind, wobei ein rotierend antreibbares Schleif- oder Trennwerkzeug (16) an der Werkzeugspindel (36) montierbar ist; erfindungsgemäß wird vorgeschlagen, dass das Tellerrad (34) hutförmig ausgebildet und so angeordnet ist, dass eine die Hutform bildende Ausnehmung (54) zur werkzeugzugewandten Seite des Tellerrads (34) orientiert ist und eine Zahnung (60) des Tellerrads (34) auf der werkzeugabgewandten Seite des Tellerrads (34) radial außerhalb einer die Ausnehmung (54) begrenzenden Erhebung (56) des Tellerrads (34) angeordnet ist, und dass die Ausnehmung (54) so bemessen ist, dass sich ...

Handarbeitsgerät

Handarbeitsgerät (1), insbesondere zum Durchtrennen eines Metallklipses (5) in einem Mauerwerk (4), mit einer Säge- oder Frässcheibe (10), die über einen Antriebsflansch (9) mit einem Antriebsmotor (8) des Handarbeitsgerätes (1) trieblich verbunden ist, mit einem an dem Handarbeitsgerät (1) befestigten Gehäuse (2), in dem die Säge- oder Frässcheibe (10) angeordnet ist, in dessen dem Metallklips (5) zugewandten Stirnseite eine Austrittsöffnung (3) für den Austritt der Säge- oder Frässcheibe (10) vorgesehen ist, durch die die Säge- oder Frässcheibe (10), zumindest teilweise, aus dem Gehäuse (2) ragt, dadurch gekennzeichnet, dass die Unterseite des Gehäuses (2) ganz oder teilweise plan ausgestaltet ist, dass an der Unterseite des Gehäuses (2) mindestens eine Distanzplatte (11) mit einer vorgegebenen Wandstärke befestigbar ist und dass durch die Distanzplatte (11) der Abstand zwischen der Säge- oder Frässcheibe (10) und dem Mauerwerk (4) einstellbar ist.

Power driven cutting tool - has hood fitted over cutting disc. swivelable in peripheral direction

The tool for cutting a groove in masonry (2), or for cutting ceramic tiles, has a cutting disc (6) driven by a motor enclosed in a housing (3). The latter is supported on a swing arm (16), which has one end (15) pivoted to one end of a support table (1). The other end of the swing arm slides in a curved guide (18) fixed to the corresp. end of the table. The cutting disc is provided with a hood (22) which can be swung about the axis (10) of rotation of the disc. Thus one edge of the hood can be held close to the masonry (2) to prevent the spread of dust generated by the cutting tool. ADVANTAGE - Simple design with effective dust exhaust.

Drehzahlanzeige

Elektrisches Handwerkzeug (1) mit einem Gehäuse (4) und einer am Gehäuse (4) angeordneten Anzeigeeinrichtung (14), dadurch gekennzeichnet, dass diese Anzeigeeinrichtung (14) als multifunktionale Anzeigeeinrichtung (14) ausgebildet ist, mittels derer verschiedene aktuelle Betriebskenngrößen während des Betriebs anzeigbar sind.

Handgeführtes Arbeitsgerät

Ansaugsystem zum Ansaugen einer Verbrennungsluft und handgeführtes Arbeitsgerät

Um ein Ansaugsystem (2) zum Ansaugen einer Verbrennungsluft einer Brennkraftmaschine (3) eines Arbeitsgerätes, insbesondere eines tragbaren, handgeführten Arbeitsgerätes (1), mit mehr als einem Fliehkraftabscheider (20, 22) umfassend ein Fliehkraftabscheidergehäuse (19, 21) und mit einer Luftfiltereinrichtung (24) umfassend ein Luftfiltergehäuse (23), welches einen Luftfilteraufnahmeraum (25) für einen Luftfilter begrenzt, bei welchem die Verbrennungsluft mittels des Fliehkraftabscheiders (20, 22) in einen Kernvolumenstrom und in einen Mantelvolumenstrom getrennt werden kann, wobei der Kernvolumenstrom durch den Luftfilteraufnahmeraum (25) hindurch der Brennkraftmaschine (3) zugeleitet wird, bereitzustellen, welches möglichst kompakt und dementsprechend nicht sehr bauteilintensiv ausgestaltet ist, wird vorgeschlagen, dass das Fliehkraftabscheidergehäuse (19, 21) unmittelbar an dem Luftfilteraufnahmeraum (25) hineinragend an dem Luftfiltergehäuse (23) angeordnet ist.

Handgeführtes Arbeitsgerät mit einem Generator

Handgeführtes Arbeitsgerät, insbesondere Motorkettensäge (14), Trennschleifer, Freischneidegerät, mit einem Verbrennungsmotor (2) und einer Zündanlage, welche ein mit der Kurbelwelle (5) des Verbrennungsmotors (2) umlaufendes Polrad (3) mit auf dessen Umfang hintereinander angeordneten Dauermagneten (4) aufweist, sowie mit einer Mehrzahl von gehäusefesten Ladeankern, die jeweils den magnetischen Kreis (K) zwischen den Polen (N, S) der Dauermagnete (4) schließen, wobei die Schenkel (8) der Ladeanker Erregerspulen (6.1–6.12) tragen, und die Dauermagnete (4) des Polrades (3) in der Erregerspule (6.1 bis 6.12) eines Ladeankers einen elektrischen Strom induzieren, der einer Vergaserheizung (9) und einer Griffheizung (10) zugeführt ist, wobei eine erste Gruppe (G1) von Erregerspulen (6.4, 6.5) mit der Vergaserheizung (9) und eine zweite Gruppe (G2) von Erregerspulen (6.1, 6.2, 6.3) mit der Griffheizung (10) verbunden sind, und wobei die erste Gruppe (G1) und die zweite Gruppe (G2) der Erregerspulen ...

Arbeitsgerät

Ein handgeführtes Arbeitsgerät, insbesondere ein Trennschleifer (1) oder dergleichen, besitzt ein Gehäuse (2), in dem ein Antriebsmotor angeordnet ist. Der Antriebsmotor treibt ein Werkzeug an. Das Arbeitsgerät besitzt ein Lüfterrad (8), das zur Gehäuseaußenseite hin von einem Lüfterraddeckel (9) abgedeckt ist. Der Lüfterraddeckel (9) besitzt im Bereich des Lüfterrads eine Ansaugöffnung (10). Auf der Außenseite (32) des Lüfterraddeckels (9) sind Rippen (12) angeordnet, die die Ansaugöffnung (10) überspannen und die außerhalb der Ansaugöffnung (10) Kanäle (22) bilden. Um auch bei einer teilweisen Abdeckung der Außenseite (32) des Lüfterraddeckels (9) eine ausreichende Versorgung mit Kühlluft zu gewährleisten, ist vorgesehen, daß die auf die Außenseite (32) des Lüfterraddeckels (9) gewandten Oberseiten (41) der Rippen (12) eine Ansaugfläche (42) bilden, die in einem zweiten Bereich (29) quer zur Oberfläche (43) des Lüfterraddeckels (9) steht.

Elektrohandwerkzeugmaschine

Es wird eine Elektrohandwerkzeugmaschine für ein scheibenförmiges, rotierendes Werkzeug (18) angegeben, die ein Maschinengehäuse (11), aus dem eine Antriebsspindel (12) für das Werkzeug (18) vorsteht und an dem ein zur Antriebsspindel (12) koaxialer, hohlzylindrischer Spannhals (15) ausgebildet ist, sowie eine an das Maschinengehäuse (11) lösbar angesetzte Schutzhaube (20) zum mindestens teilweise Abdecken des Werkzeugs (18) aufweist, die über eine Spannschelle (23) mit Spannelement (24) auf dem Spannhals (15) aufsetz- und festlegbar ist. Zum Einstellen der Schutzhaube (20) in gewünschte Drehpositionen relativ zum Maschinengehäuse (11) ohne Hilfswerkzeug und zur Sicherung der Schutzhaube (20) in jeder eingestellten Drehposition ist die Spannschelle (23) drehbar auf dem Spannhals (15) gehalten und zwischen Spannschelle (23) und Spannhals (15) eine manuell lösbare Verriegelung ausgebildet (Fig. 1).

Tube length cutting-finishing unit - has part-annular carrier for radial clamp jaws and slidable radially movable support for powered disc cutter

The mechanism is intended for cross-cutting tubes. It comprises a part-annular carrier (1) with open side to provide a lateral entry for the largest-diameter tube to be cut, and with (three) radially adjustable clamp jaws (2-4). An element (11) is slidable along a part-annular groove (1a) in the carrier and has a radially adjustable and swivelable support (5) for a unit with driven cutting disc. The element (11) is provided with (two) pairs of rollers in contact with the upper and lower surface of the carrier respectively.PS.

Rotary tool protective cover

A rotary tool such as a cutting-off wheel has a two-part protective cover (1) surrounding the cutting tool (2) over a peripheral angle. A first protective cover section (11) of the protective cover (1) is mounted to be integral with the tool, whereas the second protective cover section (12) is able to tilt relative to the first section (11). The tiltable protective cover section (12) supports a sliding member (40), which in the peripheral direction projects beyond the terminal edge (34) of a central web (31) remote from the stationary, first protective cover section (11). It comprises a rounded, outer sliding surface (35) remote from the central web (31) and has a blowing channel (44).

A guide cart for a tool

A guide cart for a tool such as a parting-off grinder or similar device has a frame 4 on which are positioned at least three wheels 5, 6. In order to achieve the easy adjustment of the cutting depth of a tool positioned on the guide cart at least one wheel 6 is fixed by a first strut 10 and by a second strut 11 to the frame 4 of the guide cart 1. In this arrangement the first strut 10 is mounted on the frame 4 in such a manner that it is able to rotate and at least two mounting points 12, 13 spaced a certain distance apart are provided for mounting the second strut 11. The mounting points may comprise a plurality of notches 15 along the second strut, said notches being engaged by a spring urged bolt (18, figure 4).

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.

Protective cover for a hand-held cutting machine

RAIL SEPARATOR

POWERED HANDICRAFT THINGS

CUT-OFF GRINDING MACHINE

HAND ATTACHMENT WITH SEPARATION OR GRINDING WHEEL.

PORTABLE CUTTING MACHINE WITH A WATER PUMP

MORE WINKELTRENNSCHLEIFER WITH DUST EXTRACTION.

EXHAUST HOOD FOR HAND-GUIDED TRENNSCHLEIFER

SOFT CONCRETE SAW

Trennscheibengerät

Führungsvorrichtung für ein elektromotorisch angetriebenes Handschleifgerät

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

Handgeführtes, motorisch betriebenes Trennschleifgerät

Manual abrasive cutting-off machine for dividing rails

The transportable manual abrasive cutting-off machine is used for making cuts extending exactly at right angles to the longitudinal direction of the rail. A first arm (4) provided with a rail bearing (5) and clamping member (3) can be connected rigidly to the rail (2) and extends at right angles to the running surface (6) of the rail. A second arm (13) is secured on the first arm (4) in an articulated manner and bears a drive device (15) with a cutting-off wheel (16) in a pivotable arrangement, so that a tilting movement (arrow B) can be performed. Between the drive device (15) and the arm (13) there is a brake (23) whose action is adjustable. The lever arm (13) can be swivelled together with the drive unit (15), so that a cut can also be made from the other side of the rail, without the clamping members being touched. ...

Apparatus for cutting off rails, in particular for railway rails

The fastening of the cutting-off apparatus is effected by rail clamps (3). The drive assembly (15), together with the motor, is suspended on a pendulum lever (13). In order to facilitate transportation, the drive assembly (15) may be removed. In order that the apparatus, owing to the risk of accident, cannot be misused by hand operation, there is provided an electric safety contact which permits the motor to be operated only when the connection between pendulum lever (13) and drive assembly (15) is closed. The safety contact is actuated by a threaded bolt which is pushed forwards when the motor is fastened on the pendulum lever. This apparatus permits the use even of large cutting-off wheels. ...

Hand-held implement for separating an article consisting of metal, plastic or stone, in particular for cutting a bath-tub to be replaced

The cutting disc (3) of the hand-held implement, driven by a flexible shaft (2), is mounted rotatably in a cuboid housing (4). Part of the cutting disc (3) protrudes out of the aperture (5) provided in the contact surface (4a) of the housing (4). A link (6) is inserted in a guidable manner in the T-guides (11) of the housing (4). Mounted rotatably in the link is an extension (7) whose one end part (7a) receives the end part (2a) of the flexible shaft (2) and the other end part bears the cutting disc (3). Together with the cutting disc (3), the link (6) is vertically adjustable in the T-grooves (11) by at least 20 mm. Using the hand-held implement, cutting operations, corresponding precisely to the depth of the material, can be carried out cleanly and precisely. ...

Handicraft things machine.

Die Erfindung betrifft eine Handwerkzeugmaschine (10) zum Betrieb eines Trenn- oder Schleifwerkzeugs (12), mit einem Gehäuse (11), mit einer aus dem Gehäuse (11) austretenden Antriebsspindel (13) für das Trenn- oder Schleifwerkzeug (12) und mit einer Spann- und Haltevorrichtung (20), über die eine Schutzhaube (17) zum zumindest teilweisen Abdecken des Trenn- oder Schleifwerkzeugs (12) an dem Gehäuse (11) lösbar festlegbar ist. Die Spann- und Haltevorrichtung (20) weist eine über einen Spannhebelmechanismus (21), der einen Spannhebel (23) aufweist, in ihrer Schellenweite veränderbare Spannschelle (22) auf. Die Spannschelle (22) ist dabei in einer ersten Position des Spannhebels (23) entspannt und weist eine erste Schellenweite auf. In einer zweiten Position des Spannhebels (23) ist die Spannschelle (22) hingegen gespannt und weist eine kleinere Schellenweite auf als in der ersten Position des Spannhebels (23). Der Spannhebelmechanismus (21) weist ein Sperrfederelement (24) mit wenigstens ...

Handicraft things machine.

Die Erfindung betrifft eine Handwerkzeugmaschine (10) zum Betrieb eines Trenn- oder Schleifwerkzeugs (12), mit einem Gehäuse (11), mit einer aus dem Gehäuse (11) austretenden Antriebsspindel (13) für das Trenn- oder Schleifwerkzeug (12) und mit einer Spann- und Haltevorrichtung (20), über die eine Schutzhaube (17) zum zumindest teilweisen Abdecken des Trenn- oder Schleifwerkzeugs (12) an dem Gehäuse (11) lösbar festlegbar ist. Die Spann- und Haltevorrichtung (20) weist eine über einen Spannhebelmechanismus (21), der einen Spannhebel (23) aufweist, in ihrer Schellenweite veränderbare Spannschelle (22) auf. Die Spannschelle (22) ist dabei in einer ersten Position des Spannhebels (23) entspannt und weist eine erste Schellenweite auf. In einer zweiten Position des Spannhebels (23) ist die Spannschelle (22) hingegen gespannt und weist eine kleinere Schellenweite auf als in der ersten Position des Spannhebels (23). Der Spannhebelmechanismus (21) weist ein Sperrfederelement (24) mit wenigstens ...

Large efficient cutting machine

Right angle grinder

The invention discloses an angle grinder which comprises a casing; the rear end of the casing is provided with a handle; a damping device is arranged between the casing and the handle; the damping device comprises a shock absorbing seat; the rear end of the shock absorbing seat is connected with the handle; the front end of the shock absorbing seat is externally connected with a soft rubber layer; the soft rubber layer is connected with the casing; the shock absorbing seat comprises a locating column; the external surface of the front end of the locating column is evenly provided with ribs; the ribs are internally connected with a locating ring to form the shape of a spoke; a check ring is arranged between the shock absorbing seat and the handle. The angle grinder of the invention reduces the shock to human body while working, alleviates the discomfort of operators caused by long-time operation, and has simple structure and good practicability.

MACHINE TOOL GUIDEE MANUALLY, IN PARTICULAR SLICER HAS GRINDING STONE

Vibration isolation device.

MACHINE TOOL GUIDEE MANUALLY, IN PARTICULAR SLICER HAS GRINDING STONE

ELECTRIC SAFETY DEVICE FOR MACHINES IN PARTICULAR SLICER

Rotating power grinder with drive motor housed in casing

L'invention concerne plus spécialement l'usure du capot protecteur d'un tel appareil sous l'effet de l'abrasion provoquée par la poussière de meulage projetée contre sa surface intérieure. Afin d'augmenter la durée de service du capot protecteur (5) fixé au bras de support (6) et entourant partiellement la meule discoïde (4), le côté intérieur (8) de la partie périphérique du capot (5), dirigé vers le bord coupant de la meule, est garni d'une bande d'usure (9) qui résiste à l'abrasion et est faite d'un autre matériau que le capot (5). Celui-ci est notamment en aluminium et la bande d'usure peut être en tôle d'acier. Applicable aux tronçonneuses à meule portatives ...

Bärbar, motordriven kapverktygsmaskin

WATER DRIVE ROTARY TOOL

The present invention provides an assembly of machined or precision cast components which combine to form a high pressure water powered rotary tool. The .rotary tool includes a rigid metal housing, a high pressure water inlet, an impeller rotatably mounted within the housing, an output drive shaft, a backing disk and at least one handgrip or alternatively an extendable handle capable of articulation throughout an extended range. The rotary tool is attachable to a pump driven by an electric motor or internal combustion engine.

SANDER HAVING A BRUSHLESS MOTOR

A sander may include a wand having a proximal end and a distal end, a sanding head mounted to the proximal end of the wand, and a brushless motor mounted on the distal end of the wand that is configured to provide rotational motion to the sanding head.

Compact vacuum sander

A sanding machine with a hand held sanding unit connected to a base unit, containing one motor that has several purposes: to provide suction of debris back to the base unit through a hose, to power a driver cable that rotates the hand-held unit and to produce vibrations needed to cause the filters to release accumulated debris, whereby three motors are not necessary as in my prior U.S. Pat. No. 6,315,647 issued on Nov. 13, 2001.

Pneumatic grinder with improved handle structure

A pneumatic grinder with improved handle structure comprising a driving portion, a connecting portion, and a grinding portion wherein the connecting portion has a handle fixing portion at one side thereof that has an accommodating space to receive a pivot element wherein the handle fixing portion has a slot on the top thereof, and further, a handle is fixed with the pivot element by screwing so that the handle can be pivoted along the slot and the grip angle thereof can therefore be adjusted.

POWER HAND TOOL

DUST HOOD FOR A GRINDING DEVICE

Disc-like tool for angle grinder

POWER CUTTER HAVING DUST COLLECTOR

PROBLEM TO BE SOLVED: To simplify a structure of a motive power transmitting mechanism by transmitting rotational motive power from a prime mover to a cutter driving pulley for a cutter and a fan driving pulley for a dust sucking removing fan through a common belt. SOLUTION: Rotational driving force from an internal combustion engine is transmitted to a fan driving pulley 62 and a relay two-stage pulley 48 through a V ribbed belt 35 from a centrifugal latch 30. An impeller of a dust sucking fan 21 is driven in rotation through a shaft for the dust sucking fan 60. Rotational driving force transmitted to the relay two-stage pulley 48 is also transmitted to a cutter 16 through a small diameter relay pulley 48b, a timing belt 55, the final pulley 58 and a driving shaft 37. Therefore, the cutter 16 is driven in rotation. COPYRIGHT: (C)1999,JPO ...

РУЧНАЯ МАШИНА

1. Ручная машина, прежде всего угловая шлифовальная машина (10), имеющая корпус (12), фланцевую посадочную шейку (14) и защитное устройство (16), устанавливаемое на фланцевой посадочной шейке (14) и образующее вместилище для рабочего инструмента, отличающаяся наличием по меньшей мере одного приспособления (22, 24) для демпфирования и/или для компенсации зазора между корпусом (12) и защитным устройством (16). ! 2. Ручная машина по п.1, отличающаяся тем, что приспособление (22) включает в себя по меньшей мере одно средство (28), действующее в радиальном направлении (26). ! 3. Ручная машина по п.1, отличающаяся тем, что по меньшей мере одним средством (28) является демпфирующее кольцо (32), взаимодействующее с пазом (30). ! 4. Ручная машина по п.1, отличающаяся тем, что по меньшей мере одним средством (28) является демпфирующий материал (34), проходящий по меньшей мере по части внешнего контура фланцевой посадочной шейки (14). ! 5. Ручная машина по п.1, отличающаяся тем, что по меньшей мере одним средством (28) является демпфирующий материал (38), расположенный с внутренней стороны (36) стенки защитного устройства (16) и проходящий по меньшей мере по части его контура. ! 6. Ручная машина по п.1, отличающаяся тем, что приспособление (22) включает в себя по меньшей мере одно средство (42), действующее в осевом направлении (40). ! 7. Ручная машина по п.6, отличающаяся тем, что по меньшей мере одним средством (42) является демпфирующее кольцо (44), взаимодействующее с пазом (46). ! 8. Ручная машина по п.6, отличающаяся тем, что по меньшей мере одним средством (42) является по меньшей мере один демпфирующий элемент (50), расположенный на контактной поверхности (48) для защитного устройства (16). ! 9. � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 122 641 (13) A (51) МПК B24B 27/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) (21)(22) Заявка: 2010122641/02, 23.09.2008 Приоритет(ы): (30) ...

Устройство для резки труб

Schneidwerkzeugmaschine

Schneidwerkzeugmaschine (100), mit einem Gehäuse (10), einer in dem Gehäuse (10) drehbar gelagerten, unmittelbar von einem in dem Gehäuse (10) angeordneten Motor angetriebenen ersten Umlenkwelle, einem mit dem Gehäuse (10) verbundenen Schneidarm (12), welcher ein Gehäuse (14) aufweist, in welchem eine zweite Umlenkwelle (15) drehbar gelagert ist, welche über eine über die erste Umlenkwelle und die zweite Umlenkwelle (15) geführtes Zugmittel (16) angetrieben ist, und einem an dem Schneidarm (12) lösbar befestigbaren Schneidwerkzeug (13), wobei zur lösbaren Befestigung des Schneidwerkzeuges (13) das Schneidwerkzeug (13) an einer Welle (17) gelagert ist, wobei die Welle (17) an zwei sich gegenüberliegenden Seiten der zweiten Umlenkwelle (15) lösbar befestigbar ist.

Hand held machine tool comprises a support flange which is provided with a friction element on its side facing the disk shaped tool clamped onto the support flange

The hand held machine tool comprises a disk shaped tool (18) held at the free end (131) of a spindle (13) between a clamping nut (20) and a support flange (62) which is provided with a friction element (53) on the side facing the tool.

Universalflexhülsen

Für Universalflexhülsen bestehend aus einer Hülse (1) in sämtlichen grössen und längen aus Trennscheibenmaterial (Edelkorund, Gewebeeinlagen und elastischem Kunstharz) mit Einspannstift (2) für Bohrmaschienen.

Handführbare Vorrichtung zum Schleifen und/oder Trennen eines Werkstücks mit einem abdeckbaren Taster

Handführbare Vorrichtung zum Schleifen und/oder Trennen eines Werkstücks, insbesondere Winkelschleifer (1), mit einem Gehäuse (3) und einem mittels elektrischer Schaltmittel ein- und ausschaltbaren Elektromotor, der ein rotierendes Werkzeug antreibt, wobei die elektrischen Schaltmittel mindestens einen elektrischen Taster (2) mit einer monostabilen Schaltfunktion aufweisen und der Elektromotor nur so lange eingeschaltet ist, wie der Taster (2) betätigt ist, dadurch gekennzeichnet, daß der Taster (2) von an der Vorrichtung beweglichen Abdeckmitteln abdeckbar ist, und daß der Taster (2) in einem abgedeckten Zustand unzugänglich ist.

Vorrichtung zur Aufnahme eines Trennblattes und Werkzeug

Vorrichtung (1) zur austauschbaren Aufnahme eines Trennblattes (2) an einem antreibbaren Antriebsabschnitt (15) der Vorrichtung (1), wobei der Antriebsabschnitt (15) relativ zu einem stationären Vorrichtungsabschnitt (16) um eine Rotationsachse rotierbar ist, und wobei eine Versorgungsanordnung vorhanden ist, mit welcher bei rotierendem Trennblatt (2) ein flüssiger Betriebsstoff in einem Übergabebereich (24) im Inneren der Vorrichtung (1) von dem stationären Vorrichtungsabschnitt an den Antriebsabschnitt überführbar ist und weiter an das rotierbare Trennblatt (2) gelangt, dadurch gekennzeichnet, dass ein materialfreier Spalt (14) zwischen dem Antriebsabschnitt und dem stationären Vorrichtungsabschnitt ausgebildet ist, wobei eine Übergabeeinrichtung zur Übergabe des Betriebsstoffes derart vorhanden ist, dass im rotierenden Zustand des Antriebsabschnitts der an den Spalt (14) herangeführte Betriebsstoff den Spalt (14) in einer vorgebbaren Richtung überbrückt, wobei ein dichtungsfreier Übergabebereich ...

Handgeführtes Arbeitsgerät mit auswechselbaren Zerspanungswerkzeugen

Messerschärfer

Messerschärfer mit einer Endbearbeitungsstufe zum Schärfen der Schneide eines Messers mit einer oder mehreren Schneidenfacetten benachbart zu ihren zwei Messerseiten, wobei die Endbearbeitungsstufeeine durch einen Motor angetriebene Welle (3),eine symmetrisch geformte abrasiv beschichtete scheibenartige Oberflä-1 che (2), die auf der Welle (3) montiert ist,eine Messerwinkelführung (8), die nahe der scheibenartigen Oberfläche (2) angeordnet ist, um die Klinge bezüglich des Winkels so auszurichten, dass ihre Schneidenfacette bzw. Schlifffläche in Kontakt mit der scheibenartigen Oberfläche (2) in einem präzise eingerichteten Winkel gehalten wird, undeine verschiebbare elastische Struktur (5) aufweist, die so konfiguriert ist, dass sie die scheibenartige Oberfläche (2) zur Messerführung (8) hin drückt, um einen durchgehenden Abriebskontakt mit der Schneidenfacette aufrechtzuerhalten,wobei die scheibenartige Oberfläche (2) auf der sich drehenden Welle (3) mit einer Nabe (6) montiert ist, die ...

Cutting machine

Foot unit for abrasive cutting-off machine

Hand-guided tool with a protective cover

Tool holding device for an insert tool

Power cutter with pleated filter

A power cutter comprises a housing 2; an engine (24, fig 3); a liquid fuel aeration mechanism (126, fig 19) to generate aerated fuel for the engine; an air intake 314; and an air filtration mechanism 316 to filter the air drawn in from the air intake. The air filtration mechanism comprises an air filter 320 that has a plurality of pleats, which hang substantially vertically downwardly when the power cutter is in its standard orientation. Preferably, the liquid fuel aeration mechanism is a carburetor. The filtration mechanism may comprise an air filter cleaning mechanism that has a rubber pleat stroker 328 located below the air filter and which is capable of being moved over the pleats of the filter in order to knock off any trapped dust. Alternatively, the pleat stroker may comprise at least one brush (342, fig 26).

DEVICE FOR THE ABLANGEN OF PIPES OD.DGL. WERKSTUCKEN

RAIL SEPARATOR

CUTTING-OFF MACHINE-TOOL

SOFT CONCRETE SAW

SOFT CONCRETE SAW In order to cut soft concrete before it has completely hardened, or about 12 to 18 hours after finishing, a rotating cutting blade and its drive motor are mounted on a wheeled support platform. The blade extends through a slot in the platform, and also through a skid plate depending from the platform, in order to cut the concrete below the skid plate. The slot and the skid plate are sized to support the concrete as it is being cut and to inhibit cracking and chipping of the concrete during cutting. The slot preferably has as little space as possible between the sides of the slot and the adjacent sides of the cutting blade. An extendable handle allows the device to be used beyond the physical reach of the operator.

POWER HAND TOOL

A rotatable rear hand grip (3) is releasably locked at a desired rotational position by operation of a control lever member (4). The power hand tool includes: a tool body (1) including an engine for generating driving power used for performing work; a front hand grip (2) fixed to the tool body; a rear hand grip including: a control lever member coupled to the engine for controlling an output of the engine; a supporting mechanism for supporting the rear hand grip rotationally about an axis (AX) between the tool body and the rear hand grip; a locking mechanism for locking the rear hand grip at one rotational position about the axis in response to the control lever member; and a controlling mechanism (4d)for allowing the control lever member to control the output of the engine after the locking mechanism locks the rear hand grip.

Hand held electric angle mill cutter

PIPE PROCESSING DEVICE

Device intended to allow the use of the portable electric polishing machines as stone-cutters set with diamonds disc, the use of the tile-layers

ARRANGEMENT AT AN ENGINE CHAIN SAW FOR MOUNTING A CIRCULAR CUTTING TOOL TO THE FRAME OF CHAIN SAW

Vibration-isolation system

L'invention concerne un dispositif antivibratile comportant un corps de base élastique tubulaire (1) aux extrémités duquel sont assujetties des parties à relier. Afin de réduire le nombre des éléments constitutifs et de faciliter le montage il est proposé que dans le corps de base (1) soit logée une cheville (2) en forme d'haltère qui est constituée par un élément de liaison (3) et des pièces à serrer (4, 5) montées aux extrémités de ce dernier et qui sont limitées dans leurs mouvements en direction axiale, l'élément de liaison pouvant être réalisé en une matière sensiblement rigide ou en une matière élastique.

APPARATUS OF WORK WITH INTERNAL COMBUSTION ENGINE

L'invention concerne une tronçonneuse équipée d'un moteur à combustion interne, servant à l'entraînement d'un outil de travail et qui est maintenu dans un carter comportant un composant porteur (10). Dans le carter est disposé un réservoir de carburant (20), pour l'alimentation en carburant du moteur ; le réservoir de carburant (20) est relié par l'intermédiaire d'un conduit de désaération à un récipient d'équilibrage (30) qui communique avec l'atmosphère par l'intermédiaire d'un système à soupape. Pour faciliter la fabrication et garantir une aération et une désaération sans danger du réservoir de carburant (20), il est prévu dans le composant porteur (10) du carter un corps creux divisé par une paroi séparatrice (11) en deux chambres (23, 33), la première chambre (23) constituant le réservoir de carburant (20) et l'autre chambre (33) le récipient d'équilibrage (30) et les deux chambres (23, 33) étant reliées l'une avec l'autre par l'intermédiaire d'un composant de désaération (40) dans ...

Bärbar, motordriven kapverktygsmaskin

ANGLE GRINDER

The invention relates to an angle grinder (200) having a gear neck (210) for connecting a dust hood (100, 100') provided with a flange (90), the angle grinder (200) having a sensor unit (20) by means of which the type of dust hood (100, 100') connected to the angle grinder (200) can be detected. The angle grinder (200) also has rotation direction control electronics (230) which are signal-connected to the sensor unit (20) such that the rotation direction (GGD, GLD) of a cutting disc (220) of the angle grinder (200) is specified depending on the dust hood type detected by the sensor unit (20).

DUST COVER FOR A CUTTING GRINDER

A dust cover (100) having: a flange (90) for attaching the dust cover (100) to a transmission extension housing (210) of a cutting grinder (200); a cover body (10) for at least partially covering a circular cutting disc (220) on both sides; and a suction connection (40) by means of which removed surface material (S) can be suctioned from the cover body (10), wherein the dust cover (100) has a depth stop (80) by means of which a cutting depth of the cutting disc (220) can be limited, wherein the depth stop (80) is mounted on the cover body (10) by means of a single arm bearing (81) on the flange side.

POWER HAND TOOL

A rotatable rear hand grip (3) is releasably locked at a desired rotational position by operation of a control lever member (4). The power hand tool includes: a tool body (1) including an engine for generating driving power used for performing work; a front hand grip (2) fixed to the tool body; a rear hand grip including: a control lever member coupled to the engine for controlling an output of the engine; a supporting mechanism for supporting the rear hand grip rotationally about an axis (AX) between the tool body and the rear hand grip; a locking mechanism for locking the rear hand grip at one rotational position about the axis in response to the control lever member; and a controlling mechanism (4d)for allowing the control lever member to control the output of the engine after the locking mechanism locks the rear hand grip.

DUST COVER FOR A CUTTING GRINDER

The invention relates to a dust cover (100) which comprises: a flange (90) for attaching the dust cover (100) to a transmission extension housing (210) of a cutting grinder (200); a cover body (10) for at least partially covering a circular cutting disc (220) on both sides; and a suction connection piece (40) for connecting to a suction hose (400), by means of which removed substrate material (UG) can be suctioned from the cover body (10), wherein the dust cover (100) has a sensor unit (20) which can detect whether the suction hose (20) is connected to the suction connection piece (40) and/or whether a flap (45) of said suction connection piece (40) is open.

WATER PUMP AT A PORTABLE CUTTING MACHINE

The invention concerns a portable cutting machine (1), comprising a cutter unit (3) with a rotatable cutter member (4) in the form of a cutter disc or a saw disc, a cutter shaft for the rotation of the cutter member, a guard in the form of a protective housing (11) for said cutter member, at least one water nozzle (12) provided in the protective housing for the generation of one or more water jets in the space defined by the protective housing, said one or more water jets essentially laying the dust which is generated during the cutting operation and cooling the cutter member, the machine further comprising a power unit (2) and a first power transmission (7) between the power unit and the cutter shaft. The machine is characterized in that a water pump (20) is provided in or on the cutter unit (3) or inside a casing (9), which covers at least parts of said power transmission, and that the pump is powered directly by members belonging to said first power transmission or by the cutter shaft ...

Angle attachment for power tool

An angle attachment of a hand-held power tool, such as a spiral cutting tool, includes an angle attachment housing having an open first end adapted to be attached to the motor housing of the power tool. An alignment bearing is mounted in the angle attachment housing and adapted to receive and support a first shaft having a first shaft gear mounted thereon. An attachment shaft is mounted in the angle attachment housing at an angle, e.g., a right angle, to the first shaft. The attachment shaft includes an attachment shaft gear mounted thereon which is engaged with the first shaft gear. One or more attachment shaft bearings are mounted in the angle attachment housing to support the attachment shaft for rotational movement thereof. The first shaft is coupled to a motor shaft of the power tool before the angle attachment housing is attached to the power tool motor housing. Rotation of the first shaft by the power tool motor causes rotation of attachments attached to the attachment shaft mounted ...

Handle for a power tool

A hand-held power tool, in particular an angle grinder, includes a housing ( 4 ) having, at its working tool side end, a tool head ( 6 ) to which a working tool ( 10 ) is secured; a main handle ( 14 ) connected to the housing ( 4 ) at its handle side end remote from the working tool side end of the housing ( 4 ), rotatable about a rotational axis (B), and having an adjustably inclined relative to the rotational axis (B).

Precision sharpener tool

A precision sharpening tool is disclosed, having opposing sharpening elements arranged to form a generally “V” shaped sharpening slot and first and second guide members arranged on opposite sides of the sharpening slot which comprise tensioned spring means arranged to urge a guiding surface against a side of a blade being drawn through the sharpening slot.

Dust collector-equipped power cutter

A dust collector-equipped power cutter, which is easy to handle in operation and convenient for storage and transportation thereof and is capable of preventing dusty air from flowing back to the cutter portion when a cutting operation is interrupted, includes a main body, a cutter, a dust-sucking fan, and a dust hose assembly. The dust hose assembly includes a first dust hose section and a second dust hose section and a hose connector joining the first hose section and the second hose section. Each of the hose sections has a spiral rib on an outer peripheral surface, and the hose connector has a spiral groove on an inner wall of each end portion, the dust hose section and the hose connector being adapted to be interconnected with each other through a threaded engagement between the spiral rib and the spiral groove. The hose connector is provided with a check valve to prevent back flow when a cutting operation is interrupted or terminated.

Apparatus for cutting concrete

In order to cut soft concrete before it has completely hardened, or about 12 to 18 hours after finishing, a rotating cutting blade and its drive motor are mounted on a wheeled support platform. The blade extends through a slot in the platform, and also through a skid plate depending from the platform, in order to cut the concrete below the skid plate. The slot and the skid plate are sized to support the concrete as it is being cut and to inhibit cracking and chipping of the concrete during cutting. The slot preferably has as little space as possible between the sides of the slot and the adjacent sides of the cutting blade. An extendable handle allows the device to be used beyond the physical reach of the operator.

Handheld, hand-guided cutting-off machine

A handheld, hand-guided cutting-off machine (10), which includes a rotating cutting-off wheel, a supporting housing part (36), an output shaft, which is rotatably supported around an output axis (40), a drive motor, a transmission mechanism (19), which connects the drive motor to the output shaft, a flange and a safety guard (24), which covers the cutting-off wheel over a covering area. The cutting-off wheel is rotatably fixedly mounted on the output shaft with the aid of the flange and surrounded by the safety guard (24), which is pivotable around a pivot axis. The safety guard (24), the supporting housing part (36) and the transmission mechanism (19) have maximum distances from the output axis (40) over an outcut angle (θ), which are less than or equal to half the flange diameter of the flange.

PORTABLE CUTTING MACHINE WITH A WATER PUMP

MANUAL SEPARATION DEVICE

Die Erfindung betrifft ein freihändig führbares Hand-Trenngerät (100), das eine Werkzeugaufnahme (18) für ein scheibenförmiges Trennwerkzeug (19) zum Ein-bringen eines Trennschnittes in ein zu bearbeitendes Werkobjekt (W1, W2) und einen in einem Maschinengehäuse (11) angeordneten Antriebsmotor (12) zum Dreh-Antreiben der Werkzeugaufnahme (18) um eine Werkzeugachse (29) aufweist, wobei das Hand-Trenngerät (10) zum Abdecken des Trennwerkzeugs (19) eine an dem Maschinengehäuse (11) angeordnete Abdeckvorrichtung (30) aufweist, die eine beim Betrieb des Trenngeräts am Maschinengehäuse (11) ortsfest festgelegte Seitenrandabdeckung (31) zum Abdecken eines Seitenrands (28) des Trennwerkzeugs (19) umfasst. Es ist vorgesehen, dass die Abdeckvorrichtung (30) ein relativ zu der Seitenrandabdeckung (31) um eine mit der Werkzeugachse (29) koaxiale oder zu der Werkzeugachse (29) parallele Schwenkachse (S) zwischen einer Abdeckstellung (D) und mindestens einer Offenstellung (O) schwenkbares Abdeckelement ...

CUT-OFF SAW

СТАНОК ДЛЯ РЕЗКИ РЕЛЬСОВ

Станок предназначен для резки рельсов фрикционными пильными дисками. Он содержит несущую прямоугольную плиту, на которой смонтированы привод, рабочий орган в виде абразивного диска, узел закрепления станка на рельсе и рычаг ручного подвода абразивного диска 3 в зону резания. Приводной вал абразивного диска выполнен удлиненным и его концы соединены водилами с концами вала отбора мощности привода. Узел закрепления станка на рельсе выполнен в виде двух параллельно расположенных и жестко закрепленных на несущей плите Г-образных упоров с профильным пазом для навешивания на подошву рельса и одного винтового прижима, закрепленного посредством шарнира и взаимодействующего своим винтом с подошвой рельса. Изобретение позволяет путем повышения жесткости узла закрепления станка на рельсе значительно уменьшить величину вибрации во время работы. 3 ил.

УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ КРУТЯЩЕГО МОМЕНТА РЕЖУЩЕМУ ИНСТРУМЕНТУ

Предполагаемое изобретение относится к области спасательных работ и может быть использовано как средство для разрезания пазов в объектах колесного, водного и воздушного транспорта. Цель изобретения - повышение технологических возможностей инструментов, в частности шлифовальных кругов. Это достигается тем, что в устройстве для передачи крутящего момента режущему инструменту, содержащем режущий инструмент и привод, привод состоит из шпиндельной головки с возможностью размещения на ней шлифовального круга с обкладками, упорного и радиального подшипников, связанных с подвижной опорой относительно корпуса устройства, имеющего выступ с закрепленной на нем ручкой, причем корпус подпружинен виброустойчивыми элементами, а подвижный шпиндель жестко соединен с гибким торсионным валом, имеющим резьбовую муфту для подсоединения к резьбовому вылету от подвижных частей автомобильного и аналогичного транспортного средства, например, к оси колеса в свободном состоянии. Промышленная полезность: простота ...

HANDGERAET MIT TRENN- ODER SCHLEIFSCHEIBE

Führungswagen und Trennschleifer mit einem Führungswagen

Führungswagen für einen Trennschleifer (17) mit einer angetriebenen Trennscheibe (30), wobei der Führungswagen (1) mindestens ein Fixiermittel zur lösbaren Fixierung des Trennschleifers auf dem Führungswagen (1) besitzt, wobei das Fixiermittel an einer Schwenkvorrichtung gehalten ist, die zwischen einer geöffneten Stellung (62) und einer Fixierstellung (63) verschwenkbar ist, dadurch gekennzeichnet, dass die Schwenkvorrichtung mindestens eine Abstützung (33) zur Abstützung einer Lagerung der Trennscheibe (30) des Trennschleifers (17) in der Fixierstellung (63) der Schwenkvorrichtung besitzt.

Schleifvorrichtung mit Schutzhaube

Schneidvorrichtung mit einer rotierenden Schleifscheibe und einer Schutzhaube, dadurch gekennzeichnet, dass an der Schutzhaube hängende Ketten befestigt sind, die zumindest in zentrifugaler Richtung die Geschwindigkeit sich von der Schleifscheibe ablösender Partikel minimieren.

Zusatzgriffanordnung

Ein Handwerkzeuggerät (2), insbesondere ein Winkelschleifgerät, weist ein Gehäuse (4), das einen Haupthandgriff (6) ausformt, und ein gegenüber dem Gehäuse (4) verschwenkbares Lagerelement (14) auf, an dem ein Seitenhandgriff (30) in verschiedenen Positionen festlegbar ist. Es ist vorgesehen, dass das Lagerelement (14) über zwei Lagerpunkte (L) gegenüber dem Gehäuse (4) verschwenkbar ist.

Trennscheibe zum Räumen einer Mauerwerksfuge

Hand-held cut-off machine

Предохранительный кожух для металлообрабатывающих машин

1. Металлообрабатывающая машина с предохранительным кожухом, содержащая сегментный корпус, по периферии которого выполнена окантовка, а в центральной части сегментного корпуса выполнен присоединительный диск с несимметрично расположенными внутренними зубьями, а с внешней стороны сегментного корпуса прикреплен профилированный фланец, на котором по цилиндрической поверхности выполнены прямоугольные зубья, при этом на верхнем краю присоединительной поверхности рабочей головки машины выполнены несимметрично расположенные ограничительные срезы, а на присоединительной поверхности рабочей головки машины выполнен продольный канал для попадания в него фиксирующего зуба ограничительного пальца, который присоединен ограничительной втулкой и крепежным винтом к рабочей головке машины, а между нижней частью профилированного фланца и рабочей головкой машины расположена плоская волнообразная пружина, при этом на ограничительной втулке расположена возвратная пружина, верхний край которой и нижний край параллельны ее продольной оси и зафиксированы соответственно к ограничительному пальцу и рабочей головке машины, а фиксирующий зуб расположен одновременно в продольном канале и между двумя прямоугольными зубьями на профилированном фланце, причем передний опорный край фиксирующего зуба расположен в обратном направлении вращения рабочей оси машины, отличающаяся тем, что на присоединительной поверхности (9) рабочей головки (10) машины выполнен периферийный канал (25) с прямоугольным профилем, в котором расположено уплотнительное кольцо (26), разрезанное с одной стороны.2. Металлообрабатывающая машина по п. 1, отл РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 150 198 U1 (51) МПК B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014120938/02, 26.05.2014 (24) Дата начала отсчета срока действия патента: 26.05.2014 (72) Автор(ы): КРУМОВ Венцислав Крумов (BG) (73) Патентообладатель(и): "СПАРКИ ЕЛТОС" АД ( ...

Hand-held tools

A hand-held tool has an operation member operably coupled to a lock mechanism. The lock mechanism can lock and unlock the position of a cover that covers at least a part of an end tool. The operation member is positioned on an opposite side to a coupling device that movably couples the cover to a gear head device mounted to a tool body.

GRINDER

A grinder includes a body having an annular portion, a wheel cover which is attachable to the annular portion, and a wheel cover holding member which holds the wheel cover. The wheel cover has a cylindrical portion which is attachable to the annular portion. The wheel cover holding member has a slide member and a pressing portion which moves the slide member. The pressing portion switches a state between an engagement state in which the slide member is engaged with the cylindrical portion and a disengagement state in which the slide member is disengaged with the cylindrical portion by moving the slide member. The pressing member moves on a second line which is parallelly offset from a first line passing the center of the annular portion in a predetermined direction. 1. A grinder comprising:a body which has a collar;a wheel cover which is attachable to the collar; anda holding member which is adapted to hold the wheel cover fixedly to the collar,wherein the wheel cover has an annular shaped attachment portion which is attachable to the collar,wherein the holding member has an engagement portion and an engagement portion operating member to move the engagement portion, the engagement portion being engageable with the attachment portion,wherein the engagement portion operating member switches a state between an engagement state in which the attachment portion and the engagement portion are engaged to each other and a disengagement state in which the attachment portion and the engagement portion are disengaged to each other by moving the engagement portion,and wherein the engagement portion operating member moves on a second line which is parallelly offset from a first line passing a center of the attachment portion and extending in a predetermined direction.2. The grinder according to claim 1 , wherein the engagement portion is engageable with an outer edge of the attachment portion claim 1 , the outer edge being located on a line passing a central region of the ...

SHIELD ASSEMBLY FOR A POWER TOOL

The present invention is directed toward a shield assembly for a handheld tool device such as an angle grinder. The shield assembly is selectively repositionable with respect to the cutting tool. A lock mechanism secures the shield assembly in discrete rotational positions relative to the cutting tool. The shield assembly includes a guard member and a bumper member, and an alignment feature configured to align the relative positions of guard member and the bumper member, thereby positing the members in a predetermined relative orientation. With this configuration, the shield assembly is selectively repositionable via a “hands-free” mechanism that permits a user to adjust the position of the shield assembly by simply contacting the shield assembly against a work surface. 120-. (canceled)21. A guard lock for a powered apparatus , the powered apparatus having a neck extending from a gear case , the guard lock comprising:a guard member, the guard member having a body portion for at least partially surrounding a working member of the power tool and a collar portion connected to and extending from the body portion, the collar including multiple windows that are spaced from one another,a stop lever coupled to the gear case via a fastener about which the stop lever may pivot, the stop lever including an engagement portion and a distant arm portion, the engagement portion including an angled surface and a straight surface, the fastener disposed between the engagement portion and the distal arm portion, and a bias member for biasing the engagement portion of the stop lever toward a window of the collar portion,wherein when the engagement portion is positioned within a window, rotation of the collar is permitted in a direction of the angled surface but is prevented in a direction of the straight surface, andwherein a depression of the distal arm portion toward the collar pivots the engagement portion away from the window.221. The guard lock of claim , wherein the stop lever is ...

ANGLE GRINDER COMPRISING A YAW RATE SENSOR FOR MEASURING THE HOUSING ROTATION

An angle grinder includes a housing, a drive unit configured to drive a usage tool, a sensor device configured to provide a rotation parameter, and a control unit configured to evaluate the rotation parameter to detect a clamped state of the usage tool. The sensor device has a yaw rate sensor configured to provide the rotation parameter in accordance with a rotational movement of the housing. The control unit triggers a safety mode in accordance with the rotation parameter or throttles the rotational speed and/or torque of the drive unit. 1. An angle grinder , comprising:a drive unit configured to drive an insertion tool,a sensor device configured to provide a rotation parameter, anda control and/or regulating unit configured to evaluate the rotation parameter in order to detect a jammed state of the insertion tool,wherein the sensor device has a yaw rate sensor configured to provide the rotation parameter as a function of a rotational movement of the housing.2. The angle grinder as claimed in claim 1 , wherein the yaw rate sensor is configured to provide the rotation parameter independently of an acceleration of the rotational movement of the housing.3. The angle grinder as claimed in claim 1 , wherein the control and/or regulating unit is configured to trigger a safety mode as a function of the rotation parameter provided by the yaw rate sensor.4. The angle grinder as claimed in claim 3 , wherein the control and/or regulating unit is configured to trigger the safety mode only beginning at a defined value of the rotation parameter.5. The angle grinder as claimed in claim 3 , wherein one or more of a rotational speed and a torque of the drive unit is throttled very highly in the safety mode.6. The angle grinder as claimed in claim 1 , wherein the yaw rate sensor has a sensitive axis oriented substantially coaxially with respect to a main axis of rotation of the insertion tool.7. The angle grinder as claimed in claim 1 , wherein the yaw rate sensor measures the same ...

GUARD DEVICE

A guard device includes at least one basic element, at least one fastening element, and at least one guard anti-twist device. The at least one guard anti-twist device includes at least one braking element that, in at least one operating state of a portable power tool, is configured at least to frictionally anti-twist lock the at least one basic element relative to a portable power tool. The at least one guard anti-twist device also includes at least one actuating unit configured to displace the at least one braking element. The at least one actuating unit includes at least one lever element. 1. A guard device comprising:at least one basic element;at least one fastening element; and at least one braking element configured, in at least one operating state of a portable power tool, at least to frictionally anti-twist lock the at least one basic element relative to the portable power tool; and', 'at least one actuating unit configured to displace the at least one braking element, the at least one actuating unit including at least one lever element., 'at least one guard anti-twist device, including2. The guard device according to claim 1 , wherein the at least one guard anti-twist device includes at least one bearing unit configured to support the at least one lever element in an at least partially pivotable manner.3. The guard device according to claim 1 , wherein the at least one lever element is configured to act claim 1 , at least in a radial direction claim 1 , on the at least one braking element.4. The guard device according to claim 1 , wherein the at least one lever element is configured to at least partially directly contact the at least one braking element.5. The guard device according to claim 2 , wherein the at least one bearing unit is connected at least partially fixedly to the at least one fastening element.6. The guard device according to claim 1 , wherein the at least one braking element includes at least one eccentric.7. The guard device according to ...

GUARD DEVICE

A guard device includes at least one basic element, at least one fastening element, and at least one guard anti-twist device. The at least one guard anti-twist device includes at least one braking element that, in at least one operating state of a portable power tool, is configured at least essentially at least to frictionally anti-twist lock the at least one basic element relative to the portable power tool. The at least one guard anti-twist device also includes at least one actuating unit configured to displace the at least one braking element. The at least one actuating unit includes at least one screwing element. 1. A guard device , comprising:at least one basic element;at least one fastening element; and at least one braking element that, in at least one operating state of a portable power tool, is configured at least essentially at least to frictionally anti-twist lock the at least one basic element relative to the portable power tool; and', 'at least one actuating unit configured to displace the at least one braking element, the at least one actuating unit including at least one screwing element., 'at least one guard anti-twist device, including2. The guard device according to claim 1 , wherein the at least one screwing element is configured to act claim 1 , at least partly in a radial direction claim 1 , on the at least one braking element.3. The guard device according to claim 1 , wherein the at least one screwing element is configured to at least partially directly contact the at least one braking element.4. The guard device according to claim 1 , wherein the at least one guard anti-twist device includes at least one receiving element configured to correspond with the at least one screwing element.5. The guard device according to claim 4 , wherein the at least one receiving element at least partially includes an internal thread.6. The guard device according to claim 4 , wherein the at least one receiving element is formed at least partially by a screw nut. ...

PROTECTIVE HOOD DEVICE

A protective hood device includes at least one basic body, at least one fastening unit, and at least one protective-hood-device anti-rotation unit. The at least one fastening device is configured, at least partially, to fasten the basic body relative to a hand power tool, in particular by force closure. The at least one protective-hood-device anti-rotation unit has at least one stop element, which is configured, at least partially, in at least one operating state of a hand power tool, to lock the basic body against rotation relative to the hand power tool, in particular by form closure. The at least one stop element is at least partially integral with the fastening unit. 1. A protective hood device , comprising:at least one basic body,at least one fastening unit configured, at least partially, to fasten the at least one basic body relative to a hand power tool, andat least one protective-hood-device anti-rotation unit including at least one stop element, the at least one stop element configured, at least partially, in at least one operating state of the hand power tool, to lock the at least one basic body against rotation relative to the hand power tool,wherein the at least one stop element is configured, at least partially, so as to be integral with the at least one fastening unit.2. The protective hood device according to claim 1 , wherein the at least one stop element is configured to bear at least partially against a transmission housing of the hand power tool when the at least one stop element is in the at least one operating state of the hand power tool.3. The protective hood device according to claim 1 , wherein the at least one stop element is at least partially constituted by a screw element.4. The protective hood device according to claim 1 , wherein the at least one stop element includes an internal thread claim 1 , at least partially.5. The protective hood device according to claim 1 , wherein the at least one stop element includes a domed nut claim 1 , ...

Grinding Tools With Guards

In at least one illustrative embodiment, a grinding tool may comprise a housing including a mount, a shaft extending from the mount along a drive axis, where the shaft is configured to support a grinding wheel for rotation about the drive axis, and a guard coupled to the mount. The guard may comprise a central ring extending around the mount, a shroud extending radially outward from the central ring along a first portion of a circumference of the central ring, and a standoff coupled to a second portion of the circumference of the central ring. The standoff may extend from the central ring along a direction substantially parallel to the drive axis such that the standoff limits rotation of the guard about a tipping axis that is substantially perpendicular to the drive axis. 110-. (canceled)11. A grinding tool comprising:a housing including a mount;a shaft extending from the mount along a drive axis, the shaft being configured to support a grinding wheel for rotation about the drive axis; anda guard coupled to the mount, the guard comprising a central ring extending around the mount, a shroud extending radially outward from the central ring along a first portion of a circumference of the central ring, and a standoff coupled to a second portion of the circumference of the central ring;wherein the standoff extends from the central ring along a direction substantially parallel to the drive axis such that the standoff limits rotation of the guard about a tipping axis that is substantially perpendicular to the drive axis.12. The grinding tool of claim 11 , further comprising a guard lock movable between an unlocked position that allows the guard to rotate about the drive axis and a locked position that blocks the guard from rotation about the drive axis.13. The grinding tool of claim 12 , wherein the guard lock comprises a first retaining feature coupled to the central ring.14. The grinding tool of claim 13 , wherein the guard lock further comprises a second retaining ...

ANGLE GRINDER

An angle grinder is provided and may include a cutting arm on which a tool may be mounted in a rotating manner about an axis of the grinder and a guide element that is arranged on the axis to control a cutting depth of the tool during a workpiece cutting operation. 1100101112. Angle grinder () with a cutting arm () , on which a tool () is mounted in a rotating manner about an axis (){'b': 13', '12, 'characterised in that a guide element () is arranged on the axis () by means of which the cutting depth (t) with which the tool cuts into a workpiece during operation is limited.'}2131211. Angle grinder according to claim 1 , characterised in that the guide element () is arranged on the axis () adjacent to the tool ().31313. Angle grinder according to or claim 1 , characterised in that the guide element () is designed as a guide roller () and more particularly is rotationally symmetrical.41312. Angle grinder according to any one of to claim 1 , characterised in that the guide element () is mounted in a freely rotating manner on the axis ().513131012. Angle grinder according any one of the preceding claims characterised in that the guide element () has a diameter that is determined in such a way that the guide element () radially projects from the cutting arm () in relation to the axis ().613. Angle grinder according to any one of the preceding claims characterised in that the guide element () is made of a steel material.71312. Angle grinder according to any one of the preceding claims characterised in that the guide element () is mounted in a freely rotatable manner on the axis () by means of a roller bearing claim 1 , by means of a slide bearing or on a plastic ring.81410131214. Angle grinder according to any one of the preceding claims characterised in that a protective hood () is arranged on the cutting arm () claim 1 , wherein the guide element () is mounted on the axis () inside the protective hood (). The present invention relates to an angle grinder with a cutting ...

Abrasive cutter and method for cutting through a rail of a track

An abrasive cutter for cutting a rail of a track includes a drive for driving a cutting disc holder in rotation. A cutting disc is attached to the cutting disc holder with at least one clamping element. The drive is directly coupled to the cutting disc holder and has a maximum transverse extent which is at most equal to a diameter of at least one clamping element. The drive has an electric drive motor with a power density P Spez ≥0.5 kW/kg. The abrasive cutter allows a reliable, efficient, user-friendly and low-maintenance through-cutting of a rail of a track.

ADJUSTABLE GUARD FOR POWER TOOL

A power tool includes an output shaft defining a rotational axis and a housing from which the output shaft protrudes. The power tool further includes a flange at least partially surrounding the output shaft, a circumferential groove defined between the housing and the flange, and a radially inward-extending slot in the flange. The power tool also includes a rotatable guard having a first radially inward-extending projection and a plurality of apertures positioned radially about the rotational axis. The first radially inward-extending projection is receivable through the radially inward-extending slot in the flange and positioned within the groove. Furthermore, the power tool includes a lever having a detent member, and a biasing member for biasing the lever toward the rotatable guard. The detent member is receivable in one of the plurality of apertures to rotationally lock the rotatable guard relative to the housing.

Angle Grinder

The present invention relates to an angle grinder having a front transmission housing for enclosing a transmission arrangement which has a closing surface that faces away from a free end of the tool spindle, and wherein the maximum distance between the closing surface and an end face of the free end of a tool spindle defines a height of the transmission housing, and wherein the height has a predefined ratio to a diameter of a disc-shaped tool, of about 1 to about 5. 1. An angle grinder comprising: a motor for driving a tool spindle , and wherein the tool spindle is arranged , by means of an angle transmission arrangement , at an angle in relation to a driving shaft of the motor , and wherein the angle transmission arrangement is enclosed , at least in part , in an associated transmission housing , and from which extends a free end of the tool spindle , to which a disc-shaped tool , which can rotate about a central longitudinal axis of the tool spindle , can be fastened by means of a tool flange ,and wherein at least a front of the transmission housing of the angle transmission arrangement has a closing surface that faces away from the free end of the tool spindle, and wherein the maximum distance between the closing surface and an end face of the free end of the tool spindle defines a height of the transmission housing, and wherein the height has a predefined ratio to the diameter of the disc-shaped tool, of maximally 1 to 2, and preferably of 2 to 5.2. An angle grinder as claimed in claim 1 , and wherein the closing surface of the tool flange that faces in a direction towards the tool spans a notional plane that intersects the motor claim 1 , at least partially.3. An angle grinder according to claim 2 , and wherein a tangent that is defined as a line extending from a circumferential edge of the disc-shaped tool and which is further oriented against the transmission housing claim 2 , and encloses claim 2 , together with the notional plane claim 2 , an angle of a ...

DUST COLLECTOR FOR AN ANGLE GRINDER

A dust collector for an angle grinder, comprising a collector body for covering a circular grinding wheel, and a sealing element extending along an outer periphery (U) of the collector body for at least partially sealing the collector body against a surface to be machined by means of the grinding wheel, and comprising a suction connection, by way of which material removed from the surface can be suction out of the collector body. In an axial direction with respect to the axis of rotation (R) of the grinding wheel, the sealing element is spring-mounted in the collector body by means of at least one spring element. 110. A dust collector for an angle grinder , comprising a collector body () for covering a circular grinding wheel , and a sealing element extending along an outer periphery of the collector body for at least partially sealing the collector body against a surface to be machined by the circular grinding wheel , and comprising a suction connection , by way of which material removed from the surface can be suctioned out of the collector body , wherein ,in an axial direction with respect to an axis of rotation (R) of the grinding wheel, the sealing element is spring-mounted in the collector body by at least one spring element.2. The dust collector for an angle grinder as claimed in claim 1 ,wherein the collector body is designed to cover a predominant part of the grinding wheel and the dust collector has a collector segment displaceable along the collector body in a peripheral direction (U) of the collector body, the collector segment arranged for gradually covering and exposing of a part of the grinding wheel as needed, and wherein in the axial direction with respect to the axis of rotation (R) of the grinding wheel, the sealing element is also spring-mounted in the collector segment by the at least one spring element.3. The dust collector for an angle grinder as claimed in claim 1 ,wherein the spring element has a base web, via which the at least one spring ...

HANDHELD CUTOFF GRINDER

Handheld cutoff grinder including a cutting disk (), a motor housing having a drive unit and a cantilever () with a support arm () and an arm cover (). A stop element () is provided in the arm cover () for the spindle (), the stop element limiting the movement of the spindle () in a plane () perpendicular to the axis of rotation () during operation. 18-. (canceled)9: A handheld cutoff grinder comprising:a spindle;a cutting disk arranged on the spindle and rotatable about an axis of rotation;a motor housing with a drive unit, the spindle being connected to the drive unit via a transmission device; anda cantilever with an arm cover and a support arm having a first end and a second end, the support arm being fixed by the first end on the motor housing and the spindle being fixed via a bearing element to the second end,the arm cover being fastened on the support arm via fasteners;a stop being provided in the arm cover for the spindle, the stop limiting movement of the spindle in a plane perpendicular to the axis of rotation during operation.10: The cutoff grinder as recited in wherein the support arm has a first bearing seat and a second bearing seat at the second end claim 9 , a first bearing being arranged in the first bearing seat claim 9 , and a second bearing being arranged in the second bearing seat.11: The cutoff grinder as recited in wherein the arm cover is a metal material.12: The cutoff grinder as recited in wherein the metal material is a light metal material.13: The cutoff grinder as recited in wherein the stop is an insert claim 9 , the insert being arranged in a bearing seat formed in the arm cover.14: The cutoff grinder as recited in wherein the stop is a bearing arranged in a bearing seat formed in the arm cover.15: The cutoff grinder as recited in wherein the spindle is mounted in the support arm via the first and second bearings and is mounted in the arm cover via a further bearing.16: The cutoff grinder as recited in wherein the first bearing is ...

FULLY ROTATABLE GRINDER GUARD ASSEMBLY AND METHOD FOR MAKING SAME

A fully rotatable guard assembly () for use with a tool having a rotating disc includes at least one rotatable bearing () for positioning on a shaft behind a rotating disc (). A shield () works with the rotatable bearing () for preventing sparks or other debris from being projected toward a user. A brake lever () is attached to the shield () for allowing the user to position the shield () at a predetermined position in relation to the rotating disc. The shield () is configured to cover approximately one-half () of the rotating disc () such that the position of the shield () can be easily rotated through use of the brake lever () for enabling the user to move the shield () such that the rotating disc () can access a workpiece. 1. A fully rotatable guard for use with a tool having a rotating disc comprising:at least one rotatable bearing for positioning on a shaft behind a rotating disc;a shield attached to the rotatable bearing for preventing sparks or other debris from being projected toward a user;a brake lever attached to the shield for allowing the user to position the shroud at a predetermined position in relation to the rotating disc; andwherein the shield covers at least one-half (½) of the rotating disc such that the position of the shield can be rotated through use of the brake lever enabling the user to move the shield such that the rotating disc can access a workpiece regardless of tool position.2. A fully rotatable guard as in claim 1 , further comprising a spacer positioned between the rotatable guard and tool for providing proper alignment of the tool to the rotatable guard.3. A fully rotatable guard as in claim 1 , wherein the shield is connected to a brake lever through the at least one bearing for returning the shield to a predetermined position.4. A fully rotatable guard as in claim 1 , wherein the shield returns to a predetermined position when no force is applied to the brake lever for preventing the rotating disc from controlling an undesirable ...

Clamping Device

A clamping device for axially clamping a disk-shaped tool on a flange of a spindle of a machine tool, includes a clamping disk which rests against the tool in a friction-fitting manner in the clamped state, a screw which is screwed into a threaded receiving opening in an end face of the spindle, an operating element which is connected to the screw in a rotationally fixed manner, and a first securing element which interacts with a corresponding second securing element provided on a flange such that when the screw is at least partly introduced into the receiving opening, the clamping disk is rotationally secured to the flange in a form-fitting manner, where the clamping disk can be rotated relative to the screw and the operating element. The first securing element can be rotated relative to the screw and is mounted in a rotationally fixed manner relative to the clamping disk. 18.-. (canceled)9. A clamping device for axially clamping a disk-shaped tool on a flange of a drivable spindle of a hand-held machine tool , comprising:a clamping disk, wherein the clamping disk is restable against the disk-shaped tool in a friction-fitting manner in a clamped state;a screw, wherein the screw is screwable into a threaded receiving opening formed in an end face of the spindle;an operating element, wherein the operating element is connectable to the screw in a rotationally fixed manner such that a manual force introduced into the operating element is transmitted to the screw in a form of an application torque; anda first securing element, wherein the first securing element interacts with a second securing element provided on the flange such that when the screw is at least partly introduced into the receiving opening, the clamping disk is rotationally secured to the flange in a form-fitting manner, wherein the clamping disk is rotatable relative to the screw and the operating element;wherein the first securing element is rotatable relative to the screw and is mounted in a ...

GRINDER AND COVER

A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover at least partially covers a tool accessory mounted on the spindle. The cover includes a first cover part and a second cover part. The first cover part is fixed to the housing and at least partially covers the tool accessory from above. The second cover part is held such that it is capable of moving relative to the first cover part. The grinder is configured such that the area of the tool accessory covered by the cover changes in accordance with the relative movement. 1. A cover configured to at least partially cover a tool accessory mounted on a spindle of a grinder , the spindle protruding downward from a housing , the cover comprising:a first cover part that is provided in a circumferential direction of the spindle, is fixed to the housing, and is configured to at least partially cover the tool accessory from above; anda second cover part that is held by the first cover part such that the second cover part is movable relative to the first cover part;wherein an area of the tool accessory covered by the cover changes in accordance with movement of the second cover part relative to the first cover part.2. A grinder comprising:a motor;a housing that houses the motor;a spindle that protrudes downward from the housing, is driven by the motor, and thereby rotates; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a cover according to .'}3. The cover according to claim 1 , wherein the second cover part is movable relative to the first cover part along a circumferential direction of the spindle.4. The cover according to claim 3 , wherein:the first cover part is configured such that, in a specific angular area in the circumferential direction, the tool accessory is partially covered from below; andthe second cover part is movable relative to the first cover part along the circumferential direction from the ...

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 ...

Protective Device for a Hand-Held Power Tool

A protective device for a hand-held power tool, in particular an angle grinder, includes a machine housing, a protective hood, and a securing element. The machine housing has a flange neck that surrounds an output shaft that defines an output axis. The protective hood has a protective hood collar. The securing element is formed as a securing ring that is configured, in at least one operating state, to prevent the protective hood from twisting relative to the machine housing. The machine housing is configured to be detachably connected to one or more of the protective hood and the securing element. The securing ring has a thread, in particular an internal thread, which in at least one connection state is configured to movably mount and hold the protective hood in an axial direction of the output axis relative to the flange neck. 1. A protective device for a hand-held power tool , comprising:a machine housing having a flange neck that surrounds an output shaft, the output shaft defining an output axis;a protective hood having a protective hood collar; anda securing element configured as a securing ring, the securing ring configured, in at least one operating state, to lock the protective hood against rotation with respect to the machine housing,wherein the machine housing is configured to be detachably connected to one or more of the protective hood and the securing element, andwherein the securing ring has a thread that is configured, in at least one connection state, to mount the protective hood such that the protective hood is movable, with respect to the flange neck, in an axial direction of the output axis.2. The protective device as claimed in claim 1 , wherein the machine housing has a tooth geometry that extends in the axial direction of the output axis.3. The protective device as claimed in claim 1 , wherein the machine housing has a radial material recess that extends in a circumferential direction around the output axis.4. The protective device as claimed ...

DUST COVER FOR A CUTTING GRINDER

A dust hood (), including a flange () for fastening the dust hood () to a transmission extension housing () of an angle grinder (), and including a hood body () for covering a circular cutting wheel () on both sides, at least in sections, and including a suction connecting piece () for connecting a suction hose (), via which removed substrate material (UG) may be extracted from the hood body (), the dust hood () including a sensor unit (), with the aid of which it is possible to detect whether the suction hose () is connected to the suction connecting piece () and/or whether a flap () of the suction connecting piece () is open. 110-. (canceled)11. A dust hood comprising:a flange for fastening the dust hood to a transmission extension housing of an angle grinder;a hood body for covering a circular cutting wheel on both sides, at least in sections;a suction connecting piece for connecting a suction hose, removed substrate material being extractable from the hood body via the suction connecting piece; anda sensor unit, a detection of whether the suction hose is connected to the suction connecting piece or whether a flap of the suction connecting piece is open being possible with the aid of the sensor unit.12. The dust hood as recited in further comprising a signal line claim 11 , a sensor signal coming from the sensor unit tappable via the signal line for the purpose of predefining the rotational direction for the cutting wheel of the angle grinder.13. The dust hood as recited in wherein the signal line is guided through the flange of the dust hood.14. The dust hood as recited in wherein the sensor unit includes a flap contact claim 11 , the detection of whether the flap of the suction connecting piece is open or closed being possible with the aid of the flap contact.15. The dust hood as recited in wherein the sensor unit includes a connecting piece contact claim 11 , the detection of whether the suction hose is connected to the suction connecting piece being possible ...

GRINDER DUST SHROUD WITH INPUT SHAFT GASKET AND ADJUSTABLE MOUNTING MECHANISM

An angle grinder dust collection shroud includes mounting brackets which are attached to a shroud body via slots which allow the mounting brackets to move to different circumferential locations around the output shaft of the angle grinder as well and inwardly towards and outwardly away from the output shaft of the angle grinder. The mounting brackets are adjustable in their position around the angle grinder output shaft to allow them to engage the angle grinder while avoiding any mounting features for the angle grinder's stock blade guard. 1. An angle grinder dust collection shroud comprising:a shroud body having an upper portion and a peripheral sidewall extending downwardly from the upper portion to form a dust collection chamber;an exhaust port attached to the shroud body, the exhaust port having an opening which is connected to the dust collection chamber;an output shaft hole in the shroud body which is sized and positioned to receive an angle grinder output shaft therethrough;a plurality of mounting brackets attached to the shroud body is spaced locations around the output shaft hole;wherein each of the plurality of mounting brackets is movable towards and away from the output shaft hole to adjust a distance between the mounting brackets;wherein a first mounting bracket of the plurality of mounting brackets is attached to the shroud body such that it is movable towards the output shaft hole at a first angular location around the output shaft hole and such that it is movable towards the output shaft hole at a second angular location around the output shaft hole which is circumferentially spaced apart around the output shaft hole from the first angular location; andwherein the shroud body is attachable to an angle grinder via the plurality of mounting brackets so that an angle grinder output shaft extends into the dust collection chamber and so that a grinding attachment is attached to the angle grinder output shaft and disposed in the dust collection chamber.2. ...

ARRANGEMENT WITH A HAND-GUIDED MACHINE TOOL AND A GRINDER

An arrangement includes a grinding wheel and a hand-held power tool. The hand-held power tool comprises a housing, a drive shaft, a drive unit configured to drive the drive shaft, a first handle and a second handle which are each fixed on the housing, a sensor, and an evaluation and control device. The sensor is configured to record at least one property information of the grinding wheel so as to determine a diameter of the grinding wheel. The evaluation and control device is configured to generate a setpoint value for a rotational speed based on the at least one property information of the grinding wheel recorded. 1. An arrangement comprising:a grinding wheel; and a housing;', 'a drive shaft;', 'a drive unit configured to drive the drive shaft;', 'a first handle and a second handle which are each fixed on the housing;', 'a sensor configured to record at least one property information of the grinding wheel so as to determine a diameter of the grinding wheel; and', 'an evaluation and control device configured to generate a setpoint value for a rotational speed based on the at least one property information of the grinding wheel recorded., 'a hand-held power tool comprising2. The arrangement as recited in claim 1 , wherein the hand-held power tool is an angle grinder.3. The arrangement as recited in claim 1 , wherein the sensor is an optical sensor.4. The arrangement as recited in claim 3 , wherein the optical sensor is a light scanner or an image acquisition unit.5. The arrangement as recited in claim 1 , wherein the at least one property information of the grinding wheel is a coded marking provided on the grinding wheel claim 1 , the coded marking being configured to change when the diameter of the grinding wheel is reduced.6. The arrangement as recited in claim 5 , wherein the coded marking is an optically recordable marking.7. The arrangement as recited in claim 6 , wherein the optically recordable marking is provided on the grinding wheel in a two-dimensional ...

GUARD LOCK

A guard lock for a powered apparatus having a neck extending from a gear case is provided. The guard lock includes a guard member having a body portion for at least partially surrounding a working member of the power tool and a collar connected to and extending from the body portion, where the collar includes multiple windows that are spaced from one another. The guard lock also includes a stop lever coupled to the gear case via a fastener about which the stop lever may pivot, the stop lever including an engagement portion and a distant arm portion, and a biasing member for biasing the engagement portion of the stop lever toward a window of the collar. When the engagement portion is positioned within a window, rotation of the collar is permitted in a first direction where the window engages a first surface of the engagement portion but is prevented in a second direction where the window engages a second surface of the engagement portion. A depression of the distal arm portion toward the collar pivots the engagement portion away from the window. 1. A guard lock for a powered apparatus , the powered apparatus having a neck extending from a gear case , the guard lock comprising:a guard member, the guard member having a body portion for at least partially surrounding a working member of the power tool and a collar connected to and extending from the body portion, the collar including multiple windows that are spaced from one another,a stop lever coupled to the gear case via a fastener about which the stop lever may pivot, the stop lever including an engagement portion and a distant arm portion, the engagement portion including an first surface and a second surface, the fastener disposed between the engagement portion and the distant arm portion, and a biasing member for biasing the engagement portion of the stop lever toward a window of the collar,wherein when the engagement portion is positioned within a window, rotation of the collar is permitted in a first direction ...

SUCTION HOOD FOR A POWER TOOL

A suction hood for a power tool, which includes a rotating tool, in particular a grinding or cutting tool, for collecting and removing dust generated during the use of the power tool, a first side wall having a first recess, a second side wall having a second recess, and a suction channel connected to the first and second side walls. The diameter of the first recess is greater than the diameter of a flange of the power tool, so that the first recess is positionable around the flange. The diameter of the second recess is greater than the diameter of a clamping element, which is used to detachably fasten the tool on a spindle of the power tool, so that the clamping element may be accommodated in the second recess. The first and second side walls are positioned at a distance from each other which is shorter than the length of the spindle. 12-. (canceled)3. A suction hood for a power tool including a rotating tool , the suction hood for collecting and removing dust generated during use of the power tool , the suction hood comprising:a first side wall having a first recess;a second side wall having a second recess; anda suction channel connected to the first and second side walls, a first diameter of the first recess being greater than a diameter of a flange of the power tool, so that the first recess is positionable around the flange, and a second diameter of the second recess being greater than a clamping element diameter of a clamping element used to detachably fasten the tool on a spindle of the power tool, so that the clamping element is accommodatable in the second recess, the first and second side walls being positioned at a distance from each other, the distance being shorter than a length of the spindle.4. The suction hood as recited in wherein the distance corresponds to a width of the tool.5. A grinding or cutting tool comprising the suction hood as recited in . The present invention relates to a suction hood for a power tool, which includes a rotating tool, ...

ANGLE GRINDER, POWER TOOL AND BRAKING METHOD THEREOF

An angle grinder includes a motor including a rotor and windings, a power supply for supplying power to the motor, a main switch for turning on/off an electrical connection between the windings of the motor and the power supply, an output shaft driven by the rotor to rotate, a rotor brake circuit for slowing down the rotor of the motor when the windings are short circuited or reverse connected, an output shaft brake circuit for producing a magnetic field to slow down the output shaft and a controller for detecting whether the rotor brake circuit short circuits or reverse connects with the windings. When the windings are short circuited or reverse connected for a time which reaches a preset value, the output shaft brake circuit produces the magnetic field to slow down the output shaft. 1. An angle grinder , comprising:a motor comprising a rotor and windings;a power supply for supplying power to the motor;a main switch for turning on/off an electrical connection between the windings of the motor and the power supply;an output shaft driven by the rotor to rotate;a rotor brake circuit for slowing down the rotor of the motor when the windings are short circuited or reverse connected;an output shaft brake circuit for producing a magnetic field to slow down the output shaft; anda controller for detecting whether the rotor brake circuit short circuits or reverse connects the windings;wherein when the windings are short circuited or reverse connected for a time which reaches a preset value, the output shaft brake circuit produces the magnetic field to slow down the output shaft.2. The angle grinder of claim 1 , wherein the preset value is less than or equal to 3 s.3. The angle grinder of claim 1 , further comprising an output shaft brake switch for turning on an electrical connection between the output shaft brake circuit and the power supply wherein the output shaft brake switch is connected electrically with the controller.4. The angle grinder of claim 3 , wherein the ...

PLATE-LIKE BACKING PAD ADAPTED FOR RELEASABLE ATTACHMENT TO A HAND-HELD POLISHING OR SANDING POWER TOOL

The invention refers to a plate-like backing pad () adapted for releasable attachment to a hand-held polishing or sanding power tool (). The backing pad () comprises 120220. Plate-like backing pad () adapted for releasable attachment to a hand-held polishing or sanding power tool () , the plate-like backing pad () comprising{'b': '34', 'a center axis (),'}{'b': '50', 'a top surface (),'}{'b': 52', '50, 'a damping layer () made of resilient plastic material and attached to the top surface (),'}{'b': 22', '56', '52', '24, 'an even bottom layer () attached to a bottom surface () of the damping layer () and adapted for releasable attachment of a polishing or sanding member (), and'}{'b': 38', '50', '32', '2', '28', '30', '2, 'an attachment member () provided on the top surface () and adapted for releasable attachment to a corresponding attachment element () of the hand-held polishing or sanding power tool (), including of a tool shaft () or an eccentric element () of the hand-held polishing or sanding power tool (),'}wherein{'b': 50', '20', '58', '34', '60', '58, 'the top surface () of the plate-like backing pad () has a central region () extending around the center axis () and an external region () surrounding the central region (),'}{'b': 58', '60, 'the central region () is recessed in respect to the external region (), and'}{'b': 38', '58', '50', '34', '38', '58', '38, 'the attachment member () is provided in the central region () of the top surface () with the center axis () extending through the attachment member () and at least part of the central region () surrounding the attachment member ().'}22060502058805020. The plate-like backing pad () according to claim 1 , wherein the external region () of the top surface () of the plate-like backing pad () extends from the central region () radially outwards to an upper external edge () of the top surface () of the plate-like backing pad ().32038. The plate-like backing pad () according to claim 1 , wherein the ...

Side Handle of Angle Grinder

The utility model relates to utilities (accessories) for hand electrical instrument, in particular, to the auxiliary handles for hand grinders intended for cutting, grinding and finishing articles made of different materials. The side handle of angle grinder includes a gripping part, a guard and a fitting (plug), wherein a gripping part contains a cavity for placing of marking tools, which cavity has the internal thread on an inlet, characterizing in that common body of handle is made from polymer, and internal thread for fixation of marking tools is provided on metal insert fixed in the vicinity of the inlet to the cavity. The technical result is to provide the reliability of easily-portable attachment of accessories provided by making thread on metal insert. 1. A side handle of an angle grinder , the side handle comprising:a gripping part, a guard and a fitting, a body made of polymer having an end facing a direction of inserting a threaded marking tool;', 'a cavity for inserting the threaded marking tool, the cavity having an inlet opening facing the direction of inserting the marking tool; and', 'a metal insert fixedly attached to the body at the end facing the direction of inserting the marking tool and forming the inlet opening of the cavity,', 'wherein the metal insert has an internal thread providing a threaded joint with inserted threaded marking tool., 'wherein the gripping part comprises2. The side handle according to claim 1 , wherein the cavity is disposed along a central axis of the side handle.3. The side handle according to claim 1 , wherein the cavity is displaced relative the central axis of the handle towards a periphery of the handle. This application claims priority to Russian Patent Application RU 2018140267, filed Nov. 15, 2018, which is incorporated herein by reference in its entirety.This utility model relates to utilities (accessories) for hand electrical instrument, in particular, to the auxiliary handles for hand grinders intended for ...

GRINDER

A grinder includes an attachment base provided on a main body, which is rotatably retaining a spindle, and surrounding the spindle; a mating portion provided on the wheel guard and mated with the attachment base; a recessed portion provided on the attachment base; a protruding portion provided on the mating portion; and a plate spring disposed between the attachment base and the mating portion, and when the wheel guard is displaced in the radial direction of the spindle against bias of the plate spring, mating between the recessed portion and the protruding portion is canceled, and the wheel guard is turnable in the circumferential direction of the spindle. As a result, the possibility that fixation of the wheel guard is cancelled against the intention of an operator is reduced as much as possible. 1. A grinder provided with a spindle to which a rotating tool is attached and a wheel guard covering the rotating tool attached to the spindle , the grinder comprising:an attachment base provided on a main body rotatably retaining the spindle, the attachment base surrounding the spindle;a mating portion provided on the wheel guard and mated with the attachment base;a recessed portion provided on either one of the attachment base and the mating portion; anda protruding portion provided on the other one of the attachment base and the mating portion,wherein when the wheel guard is displaced in a radial direction of the spindle, mating between the recessed portion and the protruding portion is cancelled, andthe wheel guard is turnable in a circumferential direction of the spindle.2. The grinder according to claim 1 , comprising an elastic body disposed between the attachment base and the mating portion claim 1 ,wherein when the wheel guard is displaced in a radial direction of the spindle against bias of the elastic body the mating between the recessed portion and the protruding portion is cancelled, andthe wheel guard is turnable in the circumferential direction of the ...

Angle grinder control systems

An angle grinder control system including an angle grinder control assembly. The angle grinder control assembly includes an outer-shell, a tightening-rod, an inner-shell, a control-rod, a return-spring, a trigger, and a control-rod-pin. The outer-shell includes a first-half-body-section and a second-half-body-section, where the inner-shell includes a primary-half-body-section and a secondary-half-body-section. The angle grinder control system provides a user an alternate means for controlling an angle-grinder-on/off-switch such that the angle grinder control system provides for safe use of an angle grinder in relation to the user. Embodiments of an angle grinder control system may include vents to promote cooling of the angle grinder. Additional embodiments many include a handle to aid the user in controlling and manipulating the angle grinder.

Safety Guard Device

A safety guard device includes at least one base body and at least one safety-guard anti-rotation lock that has at least one braking element. The at least one braking element is configured to at least secure the base body against rotation relative to a hand-held power tool by a frictional connection in at least one operating mode of the hand-held power tool. The safety-guard anti-rotation lock comprises at least one self-amplification unit that is configured to increase the braking force between at least one part of the hand-held power tool and the at least one braking element in the braking state. 1. A guard device comprising:at least one basic element; andat least one guard anti-twist device having at least one braking element that, in at least one operating state of a portable power tool, is configured at least for a frictional anti-twist locking of the basic element relative to the portable power tool,wherein the guard anti-twist device comprises at least one self-energizing unit configured to increase a braking force between at least one part of the portable power tool and the at least one braking element in a braking state.2. The guard device according to claim 1 , wherein the guard anti-twist device comprises at least one bearing unit configured to movably support the braking element at least in a braking state.3. The guard device according to claim 1 , wherein the at least one self-energizing unit at least partially comprises the at least one braking element.4. The guard device according to claim 3 , wherein the at least one braking element has a contour configured to increase a braking force between at least one part of the portable power tool and the at least one braking element in a braking state.5. The guard device according to claim 1 , wherein the bearing unit and the self-energizing unit are configured at least partially in one piece.6. The device according to claim 2 , wherein the bearing unit is configured to support the at least one braking element ...

HAND-HELD AND HAND-GUIDED RANDOM ORBITAL POLISHING OR SANDING POWER TOOL

The invention refers to a hand-held and hand-guided random orbital polishing or sanding power tool (). The tool () comprises a static body (), a motor (), an eccentric element () driven by the motor () and performing a rotational movement about a first rotational axis (), and a plate-like backing pad () connected to the eccentric element () in a manner freely rotatable about a second rotational axis (). The first and second rotational axes () extend essentially parallel to one another and are spaced apart from one another. In order to provide for a power tool () particularly quiet and low in vibrations, it is suggested that at least part of an external circumferential surface of the eccentric element () has an at least discrete rotational symmetry in respect to the first rotational axis (); and the power tool () comprises at least one first bearing () provided between the rotationally symmetric part of the external circumferential surface of the eccentric element () and the static body () of the power tool () so that the eccentric element () is guided in respect to the body () in a manner rotatable about the first rotational axis (). 113115171510917161016. Hand-held and hand-guided random orbital polishing or sanding power tool () , comprising a static body () , a motor () , an eccentric element () driven by the motor () and performing a rotational movement about a first rotational axis () , and a plate-like backing pad () connected to the eccentric element () in a manner freely rotatable about a second rotational axis () , wherein the first rotational axis () and the second rotational axis () extend essentially parallel to one another and are spaced apart from one another , characterized in that{'b': 17', '10, 'an external circumferential surface of the eccentric element () has a rotationally symmetric part having at least discrete rotational symmetry in respect to the first rotational axis (); and'}{'b': 1', '30', '17', '31', '1', '17', '31', '10, 'the hand-held ...

ANGLE GRINDER

An angle grinder comprises a motor and an output member to which a grinding disc is attachable. The output member defines an output axis. A drive shaft is configured to transfer torque from the motor to the output member. A braking disc is coupled to the drive shaft and a braking pad is moveable in a direction transverse to the drive axis between a first braking pad position and a second braking pad position, in which the braking pad is not in contact with the braking disc. A biasing member biases the braking pad toward the first braking pad position and a trigger is pivotable about a trigger axis between a first trigger position and a second trigger position. In response to the trigger being pivoted from the first to the second trigger position, the braking pad is moved from the first to the second braking pad position. 1. An angle grinder comprising:a motor;an output member to which a grinding disc is attachable, the output member defining an output axis;a drive shaft configured to transfer torque from the motor to the output member, the drive shaft defining a drive axis that is transverse to the output axis;a braking disc coupled to the drive shaft for rotation therewith;a braking pad moveable in a direction transverse to the drive axis between a first braking pad position, in which the braking pad is in contact with the braking disc, and a second braking pad position, in which the braking pad is spaced from and not in contact with the braking disc;a biasing member biasing the braking pad toward the first braking pad position; anda trigger pivotable about a trigger axis between a first trigger position, in which the motor is deactivated, and a second trigger position, in which the motor is activated;wherein in response to the trigger being pivoted from the first trigger position to the second trigger position, the braking pad is moved from the first braking pad position to the second braking pad position.2. The angle grinder of claim 1 , wherein the biasing ...

HAND GRINDER AND METHOD OF COUPLING GRINDING DISC OF HAND GRINDER

The present inventive concept relates to a hand grinder including a grinder main body, a coupler including a power transfer member coupled to a rotary shaft of a grinder main body and a main body provided between the grinder main body and power transfer member, and a grinding disc including a grinding stone having a hollow disc plate and a coupling portion provided at a central portion of the grinding stone and detachably coupled to the coupler. A plurality of hook steps are radially arranged along an outer circumference of an upper end portion of the power transfer member, and a plurality of coupling pieces are radially arranged on an inner circumference of a central portion of the coupling portion. When the grinding disc is assembled such that the hook steps pass between the coupling pieces and the main body is rotated, a lower surface of the hook steps is placed on an upper surface of the coupling pieces and the grinding disc is fixed to the coupler. 1. A hand grinder comprising:a grinder main body; a power transfer member coupled to a rotary shaft of a grinder main body; and', 'a main body provided between the grinder main body and power transfer member;, 'a coupler comprising a grinding stone having a hollow disc plate; and', 'a coupling portion provided at a central portion of the grinding stone and detachably coupled to the coupler;, 'a grinding disc comprisinga plurality of hook steps that are radially arranged along an outer circumference of an upper end portion of the power transfer member;a plurality of coupling pieces that are radially arranged on an inner circumference of a central portion of the coupling portion; andwherein, when the grinding disc is assembled such that the hook steps pass between the coupling pieces and the main body is rotated, a lower surface of the hook steps is placed on an upper surface of the coupling pieces and the grinding disc is fixed to the coupler.2. The hand grinder of claim 1 , further comprising a stopper that protrudes ...

Torque Sensitive Adjustable Locking Grinder Guard

A grinder guard assembly disclosed for a grinder blade includes a rotatable and adjustable indexed grinder guard defining a plurality of indexed and chamfered holes adjacent to an inner ring thereof and an “L” edge configured on an outer circumference thereof to form a guard by retaining grinding debris and preventing outside intervention. The grinder guard assembly also includes an annulus forming a single member with an inside washer and an outside washer and a space there between configured to slidably retain the indexed grinder guard in a common plane with the washers, the annulus configured to axially attach to a hub of the grinder. The grinder guard assembly further includes torque sensitive protrusions mounted from the outside washer, the protrusions configured to lock with the chamfered holes of the indexed grinder guard and retract therefrom based a torque force applied to the indexed grinder guard relative to the annulus. 1. A grinder guard assembly for a grinder , the grinder guard assembly comprising:an indexed grinder guard defining a plurality of indexed and chamfered holes adjacent to an inner ring thereof and an “L” edge configured on a portion of an outer circumference thereof to form a guard by retaining grinding debris and preventing outside intervention;an annulus forming a single member with an inside washer and an outside washer and a space there between configured to slidably retain the indexed grinder guard in a common plane with the washers, the annulus configured to axially attach to a hub of the grinder; anda plurality of torque sensitive conical protrusions mounted from the outside washer, the protrusions configured to lock with the chamfered holes of the indexed grinder guard and retract therefrom based a torque on the indexed grinder guard relative to the annulus.2. The grinder guard of claim 1 , wherein the annulus is separated from the outside washers by a slot defined there between along a portion of the circumference of the annulus ...

ROTATIONAL CONTROL STRUCTURE OF PNEUMATIC TOOL

A rotational control structure of a pneumatic tool includes a housing provided with a cylinder unit. The cylinder unit has a bottom wall with two through holes and a guide post extending outwardly. The guide post has a gas passage and a gas outlet. The guide post is closely connected with a rotatable control ring leaning against the bottom wall. A sealing ring is provided between the bottom wall and the guide post. The control ring has a control passage therein. The control ring is rotatable for the control passage to communicate with one of the through holes of the bottom wall, thereby controlling the forward/reverse rotation of the pneumatic tool. 1. A rotational control structure of a pneumatic tool , the pneumatic tool comprising an intake seat for communicating with an external high-pressure gas , the intake seat being connected with a cylinder unit , the cylinder unit being connected with a tool head , the cylinder unit having a rear cover , the rear cover having a first through hole and a second through hole , wherein the first through hole allows the gas to enter the cylinder unit for driving the tool head to rotate in a forward direction , and the second through hole allows the gas to enter the cylinder unit for driving the tool head to rotate in a reverse direction opposite to the forward direction; the rotational control structure comprising:a housing for accommodating the cylinder unit, the housing having a bottom wall leaning against the rear cover, the bottom wall having a third through hole communicating with the first through hole and a fourth through hole communicating with the second through hole; an outer periphery of the bottom wall being formed with a first annular groove, a first sealing ring being embedded in the first annular groove; the bottom wall being provided with a guide post extending outwardly from the housing, a gas passage being defined in the guide post and communicating with the intake seat, a gas outlet being provided on a side ...

STORAGE SHIELD FOR ANGLE GRINDING DISC

A storage shield for a disc of an angle grinder is provided according to the present invention. The storage shield includes a first shield member and a second shield member. Each of the first and second shield members includes a front face, an opposing rear face positioned parallel to and a distance apart from the front face, an end wall that joins an upper edge of the front face to an upper edge of the rear face, and a front face opening between a lower edge of the front face and a lower edge of the rear face, and an opening in a center area of the front face at the lower edge thereof. A pivot hinge assembly pivotally connects a first end of the first shield member to a first end of the second shield member. Fastening means for affixing the storage shield and stored angle grinder to a worksite surface are affixed to the rear face of one of the first shield member or second shield member. A method of protecting a disc of an angle grinder when not in use is also provided. First, the storage shield is opened. Second, the disk of the angle grinder is inserted into the open storage shield such that a spindle of the angle grinder is aligned with the openings in the front faces of the first and second shield members. Next the storage shield is closed. Finally, the storage shield and the angle grinder are affixed to a worksite surface. 1. A storage shield for a disc of an angle grinder comprising:a first shield member having a front face, an opposing rear face positioned parallel to and a distance apart from said front face, an end wall that joins an upper edge of the front face to an upper edge of the rear face, and a front face opening between a lower edge of the front face and a lower edge of the rear face, and an opening in a center area of the front face at the lower edge thereof;a second shield member having a front face, an opposing rear face positioned parallel to and a distance apart from said front face, an end wall that joins an upper edge of the front face to ...

GRINDING MACHINE FOR RAISED JOINTS OF RIVETS ON SHEET METAL

A grinding device for raised joints of rivets on sheet metal is provided, including a lateral plate, legs, a moving plate, first springs, a first bearing seat, a sleeve, a grinding wheel, a moving bar, a 7-shaped plate, a vertical bar, a second spring, an oscillating plate, etc. The legs are fixedly connected, in a symmetric manner, to left and right sides of the bottom of the lateral plate. A through hole, which has a function of guiding, is formed on a left side of the lateral plate. The moving bar is located in the through hole. In the present disclosure, a driving motor is started to rotate the grinding wheel, the grinding device is moved to enable the grinding wheel to be located above a raised joint, and then the oscillating plate is pulled so that the grinding wheel can move downward to grind the raised joint. 11234567921819839431495365761011121315161676110111101311141315141514159121311. A grinding device for raised joints of rivets on sheet metal , comprising a lateral plate () , legs () , a moving plate () , first springs () , a first bearing seat () , a sleeve () , a grinding wheel () and a moving bar (); the legs () are fixedly connected , in a symmetric manner , to left and right sides of the bottom of the lateral plate (); a through hole () , which has a function of guiding , is formed on a left side of the lateral plate (); the moving bar () is located in the through hole (); the moving plate () is fixedly connected to the bottom end of the moving bar (); the first springs () are connected between left and right sides of the top of the moving plate () and left and right sides of the bottom of the lateral plate (); the first spring () on the left is located on a right side of the moving bar (); the first bearing seat () is mounted , in an embedded manner , in the middle of the moving plate (); the sleeve () is fixedly connected to a bearing in the first bearing seat (); and the grinding wheel () that can grind a joint is mounted on the external bottom ...

WHEEL COVER FOR ELECTRIC TOOL

A wheel cover including a first cover attachable to a body of a power tool and a second cover removably attachable to the first cover reduces rattling of the second cover. The wheel cover includes a first cover attachable to a body of the power tool to cover at least a portion of a first surface of the tip tool adjacent to the body of the power tool, a second cover removably attachable to the first cover to cover at least a portion of a second surface of the tip tool opposite to the body of the power tool, and a rattle restrainer that reduces, while the second cover is attached to the first cover, rattling of the second cover relative to the first cover. 1. A wheel cover for covering a disk-shaped tip tool attached to an output shaft of a power tool , the wheel cover comprising:a first cover attachable to a body of the power tool to cover at least a portion of a first surface of the tip tool, the first surface being adjacent to the body of the power tool;a second cover removably attachable to the first cover to cover at least a portion of a second surface of the tip tool, the second surface being opposite to the body of the power tool; anda rattle restrainer configured to reduce, while the second cover is attached to the first cover, rattling of the second cover relative to the first cover.2. The wheel cover according to claim 1 , whereinthe rattle restrainer reduces rattling of the second cover at least in a radial direction of the tip tool intersecting with the output shaft or in an axial direction parallel to the output shaft.3. The wheel cover according to claim 2 , wherein a first plate face protector facing the first surface of the tip tool to protect a first plate face of the tip tool, and', 'a first periphery protector facing a peripheral edge of the tip tool about the output shaft to protect a periphery of the tip tool,', 'the second cover includes', 'a second plate face protector facing the second surface of the tip tool to protect a second plate face of ...

Hinge Assembly for an Angle Grinder Dust Shroud

A hinge assembly for attaching a door member to a main structure is provided. The hinge assembly, in an embodiment, includes a first hinge member securely attached to one of the door member or the main structure; a second hinge member securely attached to the other of the door member or the main structure and rotatably engaging the first hinge member; and a cam/spring assembly configured to bias the door member into an open or a closed position with respect to the main structure. 1. A hinge assembly for attaching a door member to a main structure , comprising:a first hinge member securely attached to one of the door member or the main structure;a second hinge member securely attached to the other of the door member or the main structure and rotatably engaging the first hinge member; anda cam/spring assembly configured to bias the door member into an open or a closed position with respect to the main structure.2. The hinge assembly of claim 1 , wherein the cam/spring assembly includes a first cam surface defined by a surface of the first hinge member and a second cam surface defined by a surface of the second hinge member and correspondingly engaging the first cam surface.3. The hinge assembly of claim 2 , wherein the first and second cam surfaces cause the second hinge member to move axially with respect to the first hinge member as the door member is rotated with respect to the main structure.4. The hinge assembly of claim 2 , wherein the cam/spring assembly comprises a compression spring having two ends respectively engaging the first and the second hinge members.5. The hinge assembly of claim 4 , wherein the compression spring biases the first and second cam surfaces to engage one another in an open or closed position of the door member with respect to the main structure.6. The hinge assembly of claim 2 , wherein the first cam surface included a recessed surface and the second cam surface includes a projected surface engaging the recessed surface in the open and ...

SAFETY COVER FOR SAND GRINDER

A safety cover used in a sand grinder is disclosed to include a cover body rotatably mounted at the base of the sand grinder around the sand wheel and having equiangularly spaced oval locating holes, a positioning device selectively engaged into one of the oval locating holes, and a switching lever mounted at the base and biasable between a locking position where an abutment portion of the switching lever is abutted against the positioning device to lock the positioning device in one oval locating hole and an unlocking position where a bearing portion of the switching lever faces toward the positioning device for enabling the positioning device to be disengaged from the respective oval locating hole. 1. A safety cover used in a sand grinder comprising a base and a sand wheel rotatably mounted at said base , the safety cover comprising:a cover body mounted at said base and rotatably surrounding a part of an outer perimeter of said sand wheel, said cover body comprising a plurality of oval locating holes;a positioning device comprising a movable pin adapted for selectively engaging into one of said oval locating holes of said cover body subject to rotation of said cover body relative to said sand wheel; anda switching lever mounted at said base and biasable relative to said base between a locking position and an unlocking position, said switching lever comprising an abutment portion and a bearing portion adjoined to said abutment portion, the distance between said abutment portion of said switching lever and said cover body being shorter than the distance between said bearing portion of said switching lever and said cover body, wherein when said switching lever is set in said locking position, said abutment portion of said switching lever is abutted against said positioning device to lock said positioning device in one said oval locating hole of said cover body; when said switching lever is set in said unlocking position, said bearing portion of said switching lever ...

PNEUMATIC TOOL

A pneumatic tool comprises a housing, a cylinder and a pneumatic assembly. The housing includes a compartment, an air entrance channel interconnecting with the compartment, and an air exit channel interconnecting with the compartment. The air exit channel includes an air incoming end, an air outgoing end, and a flow-guiding incline disposed on one side of the compartment, which faces the cylinder, and connected with the rim of the air exit channel partially or completely. The cross section of the air incoming end is larger than the cross section of the air outgoing end. 1. A pneumatic tool , comprising a housing , a cylinder and a pneumatic assembly , wherein the housing includes a compartment , an air entrance channel interconnecting with the compartment , and an air exit channel interconnecting with the compartment , and wherein the air exit channel includes an air incoming end and an air outgoing end , and wherein the cylinder includes an air chamber for accommodating the pneumatic assembly , an air inlet hole interconnecting with the air chamber and disposed corresponding to the air entrance channel , and an air outlet hole interconnecting with the air chamber and the compartment , and wherein the pneumatic tool is characterized in that the air exit channel includes a flow-guiding incline disposed on one side of the compartment , which faces the cylinder , and connected with the entire rim or a part of the rim of the air exit channel , and that the cross section of the air incoming end is larger than the cross section of the air outgoing end.2. The pneumatic tool according to claim 1 , wherein a curvature of the flow-guiding incline gradually increases from one side thereof claim 1 , which is far away from the air exit channel claim 1 , toward the air exit channel.3. The pneumatic tool according to claim 2 , wherein the flow-guiding incline is connected with a part of the rim of the air exit channel claim 2 , and the air exit channel further includes a blocking ...

Protective Hood Device

A protective hood device with at least one protective hood basic body is configured to at least partially cover an insertable tool of a portable power tool. The protective hood device has at least one functional recess, and at least one covering unit which is mounted on the at least one protective hood basic body so as to be movable relative to the at least one protective hood basic body. The at least one covering unit is configured to cover the at least one functional recess of the at least one protective hood basic body in at least one first position. The at least one protective hood device further includes a locking unit which is configured to lock the at least one covering unit in the at least one first position relative to the at least one protective hood basic body. 1. A protective hood device for a portable power tool , comprising:at least one protective hood basic body configured to at least partially cover an insertable tool of a portable power tool, wherein the at least one protective hood basic body includes at least one functional recess;at least one covering unit which is mounted on the at least one protective hood basic body so as to be movable relative to the at least one protective hood basic body, and which is configured to cover the at least one functional recess of the at least one protective hood basic body in at least one first position; anda locking unit configured to lock the at least one covering unit in the at least one first position relative to the at least one protective hood basic body.2. The protective hood device according to claim 1 , wherein the locking unit is configured to lock the at least one covering unit relative to the at least one protective hood basic body in at least one further position in which the at least one covering unit at least partially releases the functional recess.3. The protective hood device according to claim 1 , wherein the at least one covering unit is displaceably mounted relative to the protective hood ...

ELECTRIC POWER TOOL

An electric power tool disclosed herein may include a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tool holder projecting from the housing; a cover covering at least a part of a tool attached to the tool holder; and a mask member. The cover may include an engaging portion that engages with the housing. The mask member may have a shape that blocks visibility of at least a part of the engaging portion. 1. An electric power tool comprising:a motor;a power transmission mechanism connected to the motor;a housing that houses the motor and the power transmission mechanism;a tool holder projecting from the housing;a cover covering at least a part of a tool attached to the tool holder; anda mask member,whereinthe cover includes an engaging portion that engages with the housing, andthe mask member has a shape that blocks visibility of at least a part of the engaging portion.2. The electric power tool according to claim 1 , whereinthe engaging portion includes an engaging rib,the housing includes an engaging wall that engages with the engaging rib, andthe engaging wall includes a notch through which the engaging rib passes when the cover is attached to the housing.3. The electric power tool according to claim 2 , whereinthe mask member includes:a mask plate shielding the notch; anda retainer fixing the mask plate to the housing.4. The electric power tool according to claim 3 , whereinthe retainer is screwed to the housing, andthe retainer has a shape that allows rotation of the retainer in a direction along which the retainer is attached to the housing from outside of the housing and prohibits rotation of the retainer in a direction along which the retainer is removed from the housing from the outside of the housing.5. The electric power tool according to claim 3 , wherein the mask plate and the retainer are separate parts.6. The electric power tool according to claim 1 , wherein the mask ...

Protective hood rotation prevention device

A protective hood rotation prevention device for a power tool, in particular an angle grinder, includes a clamping unit that is configured to clamp a protective hood unit. The clamping unit includes at least one clamping element with a rotation prevention unit that has a rotation prevention element. The device further includes a movement coupling unit that is configured to move the rotation prevention element in at least one operating state depending on a movement of the clamping element. The device also includes a securing unit that is configured, in at least one operating state, to secure the rotation prevention element, in the event of a movement of the clamping element in a loosening direction of the clamping element, at least as far as possible counter to a movement in an uncoupling direction of the rotation prevention element out of a rotation prevention position of the rotation prevention element.

POWER TOOL

A power tool, in particular an angle grinder, having a drive motor accommodated in a housing which drives a rotor shaft, a tool spindle comprising a tool holder which is preferentially connected to the rotor shaft in a power-transmitting manner by a gearing, as well as a control switch for activating the drive motor, wherein the control switch comprises a first switching element which is pivotably mounted on the housing about a pivot axis between a first switch position for switching on the drive motor and a second switch position for switching off the drive motor, and a second switching element which is rotatable about a rotational axis between a locked position which blocks the first switching element from moving into the first switch position and a release position which enables the first switching element to move into the first switch position. 1. A power tool , in particular an angle grinder , having a drive motor accommodated in a housing which drives a rotor shaft , a tool spindle comprising a tool holder which is preferentially connected to the rotor shaft in a power-transmitting manner by a gearing , as well as a control switch for activating the drive motor , wherein the control switch comprises a first switching element which is pivotably mounted on the housing about a pivot axis between a first switch position for switching on the drive motor and a second switch position for switching off the drive motor , and a second switching element which is rotatable about a rotational axis between a locked position which blocks the first switching element from moving into the first switch position and a release position which enables the first switching element to move into the first switch position ,at least one locking contour is formed on the housing which interacts with the second switching element such that in the locked position of the second switching element, the first switching element is locked in the second switch position, andat least one recess is ...

Guard Assembly for a Power Tool

A guard assembly for an abrasive accessory of a power tool is provided, including a guard shell being associated with a first surface of the abrasive accessory and secured to the power tool around an output spindle of the power tool; and a guard cover being associated with a second surface of the abrasive accessory opposite the first surface and attached to the guard shell at a pivot point having an axis that is at a distance from an axis of the spindle, the guard cover being rotatably movable with respect to the guard shell around the pivot point. 1. A guard assembly for an abrasive accessory of a power tool , comprising:a guard shell being associated with a first surface of the abrasive accessory and secured to the power tool around an output spindle of the power tool; anda guard cover being associated with a second surface of the abrasive accessory opposite the first surface and attached to the guard shell at a pivot point having an axis that is at a distance from an axis of the spindle, the guard cover being rotatably movable with respect to the guard shell around the pivot point.2. The guard assembly of claim 1 , wherein the guard shell comprises a guard collar configured to lock around a tool collar of the power tool located around the output spindle of the power tool.3. The guard assembly of claim 1 , wherein the pivot point comprises a rivet rotatably attaching the guard cover to the guard shell claim 1 , the rivet being located near an outer periphery of the inner guard shell.4. The guard assembly of claim 1 , wherein the guard cover is rotatable with respect to the guard shell between a closed position claim 1 , wherein the guard cover covers approximately half or more of the second surface of the abrasive accessory claim 1 , and an open position claim 1 , wherein the guard cover covers less than approximately half of the second surface of the abrasive accessory.5. The guard assembly of claim 4 , further comprising a spring member arranged to bias the ...

Guard Assembly for a Power Tool

A guard assembly for an abrasive accessory of a power tool is provided, including an inner guard secured to the power tool around an output spindle of the power tool, and an outer guard secured to the inner guard at a pivot point along or in close proximity to an axis of the spindle. The outer guard is rotatably movable with respect to the inner guar around the pivot point between a retracted position, where the inner and outer guards together cover a first angular area of the abrasive accessory, and an extended position, where the inner and outer guards together cover a second angular area of the abrasive accessory larger than the first angular area. 1. A guard assembly for an abrasive accessory of a power tool , comprising:an inner guard secured to the power tool around an output spindle of the power tool; andan outer guard secured to the inner guard at a pivot point along or in close proximity to an axis of the spindle, the outer guard being rotatably movable with respect to the inner guar around the pivot point between a retracted position, wherein the inner and outer guards together cover a first angular area of the abrasive accessory, and an extended position, wherein the inner and outer guards together cover a second angular area of the abrasive accessory larger than the first angular area.2. The guard assembly of claim 1 , wherein the inner guard covers approximately half or more of both surfaces of the abrasive accessory and the outer guard covers less than half of both surfaces of the inner guard in the retracted position.3. The guard assembly of claim 1 , wherein the outer guard is slidably positioned on the inner guard so that the inner and outer guards together cover up to approximately 270 degrees of a peripheral area of the abrasive accessory in the extended position.4. The guard assembly of claim 1 , wherein the pivot point comprises a rivet rotatably connecting a side surface of the inner guard to a side surface of the outer guard.5. The guard ...

GUARDS FOR USE WITH POWER TOOLS AND POWER TOOLS INCLUDING SUCH GUARDS

Example guards for use with power tools and power tools including such guards. The guards include a collar structured to be removably coupled to a hand-guided electrical tool, a hood coupled to the collar, and a guard ring coupled to the collar via the hood. The guard ring extends entirely around the collar. 1. A guard for use with a power tool , the guard comprising:a collar structured to be removably coupled to a power tool;a hood coupled to the collar; anda guard ring coupled to the collar via the hood, the guard ring extending entirely around the collar.2. The guard of claim 1 , wherein the hood is structured to cover a portion of a rotatable component of the power tool when the guard is coupled to the power tool.3. The guard of claim 1 , further including a support coupled between the guard ring and the hood adjacent the collar.4. The guard of claim 3 , wherein the support is a first support claim 3 , further including a second support coupled between the guard ring and the hood claim 3 , and further including a window defined between the first and second supports to enable visibility of a rotatable component of the power tool when the guard is coupled to the power tool.5. The guard of claim 4 , wherein the window is a first window claim 4 , further including a second window and a third window claim 4 , the second window being defined between the first support and the hood claim 4 , the third window being defined between the second support and the hood claim 4 , the second window disposed between the first and third windows.6. The guard of claim 1 , wherein the hood includes a first portion extending from the collar and a second portion extending from the first portion and tapering toward the guard ring.7. The guard of claim 1 , wherein the guard ring is structured to enable a rotatable component of the power tool to extend past the guard ring to enable the rotatable component to contact a working surface.8. The guard of claim 1 , wherein the guard ring is ...

REVERSIBLE LEVER FOR A GUARD ASSEMBLY FOR A POWER TOOL

A stop lever is provided for a power tool having a gear case and a guard member. The reversible stop lever is coupled to the gear case via a fastener. The stop lever includes a first arm and a second arm, and the fastener is removable to position the stop lever such that the first arm or the second arm of the stop lever engages the guard collar. The first arm includes a first surface and a second surface that are angled such that the guard collar can be rotated in a one direction without actuation of the second arm, but not in the opposite direction. The second arm of the stop lever includes surfaces that are angled to prevent rotation of the guard collar in either direction unless the second arm is actuated about the fastener. 1. A power tool comprising:a gear case having a neck;a guard member having a body portion for at least partially surrounding a working member and a guard collar disposed around the neck of the gear case; anda reversible stop lever coupled to the gear case via a fastener about which the stop lever is pivotable, the stop lever comprising a first arm and a second arm, the fastener being removable to position the stop lever such that the first arm or the second arm of the stop lever engages the guard collar;wherein the first arm of the stop lever includes a first surface and a second surface that are angled with respect to the guard collar such that, when the first arm engages a window of the guard collar, rotation of the guard collar is permitted in a first direction where the window engages the first surface of the first arm without actuation of the second arm about the fastener, but is prevented in a second direction where the window engages the second surface of the first arm unless the second arm is actuated about the fastener, andthe second arm of the stop lever includes a first surface and a second surface that are angled such that, when the second arm engages a window of the guard collar, rotation of the guard collar in either direction ...

ADJUSTABLE COVER ASSEMBLY FOR CUT-OFF TOOL

A cover assembly for use on a cut-off tool. The tool has a housing, a motor having a rotor, and an output shaft for fastening a cutting wheel. The shaft is connected to the rotor, so the output shaft turns about an axis aligned with the centerline of the rotor. The assembly includes a cover sized for receiving the cutting wheel. The cover has a collar sized for receiving a portion of the tool surrounding the output shaft. The collar is fastenable to the tool. The tool includes a foot having an elongated planar sole pivotally attached to the cover. The foot is pivotable with respect to the cover to adjust a distance that the cutting wheel extends from the sole. The cover includes a clamp for clamping the foot to the cover when the distance the cutting wheel extends from the sole corresponds to a desired maximum cutting depth. 1. A cover assembly for use on a cut-off tool having a housing , a motor having a rotor mounted inside the housing , said motor being selectively operable to rotate the rotor about a centerline , the cut-off tool having an output shaft adapted for fastening a cutting wheel thereto , said output shaft being operatively connected to the rotor so the output shaft turns about an axis that is generally aligned with the centerline of the rotor , said cover assembly comprising:a semi-annular cover sized and shaped for receiving the cutting wheel when the cutting wheel is fastened to the output shaft, said cover having a collar sized for receiving a portion of the tool surrounding the output shaft, the collar being releasably fastenable to said portion of the tool to attach the cover to the tool; anda foot having an elongated planar sole pivotally attached to the cover for pivotal movement relative to the cut-off tool when the collar is fastened to the portion of the tool, the foot being selectively pivotable with respect to the cover to adjust a distance that the cutting wheel extends from the sole;wherein the cover includes a clamp positioned for ...

HANDHELD, HAND-GUIDED CUTTING-OFF MACHINE

A handheld, hand-guided cutting-off machine (), which includes a rotating cutting-off wheel, a supporting housing part (), an output shaft, which is rotatably supported around an output axis (), a drive motor, a transmission mechanism (), which connects the drive motor to the output shaft, a flange and a safety guard (), which covers the cutting-off wheel over a covering area. The cutting-off wheel is rotatably fixedly mounted on the output shaft with the aid of the flange and surrounded by the safety guard (), which is pivotable around a pivot axis. The safety guard (), the supporting housing part () and the transmission mechanism () have maximum distances from the output axis () over an outcut angle (θ), which are less than or equal to half the flange diameter of the flange. 19-. (canceled)10. A handheld , hand-guided cutting-off machine comprising:a supporting housing part;a cutting-off wheel having a wheel diameter;an output shaft rotatably supported around an output axis on the housing part with the aid of a bearing element;a drive motor and a transmission mechanism connecting the drive motor to the output shaft, the transmission mechanism being situated on the housing part;a flange having a flange diameter, the cutting-off wheel being rotatably fixedly situatable on the output shaft with the aid of the flange; anda safety guard having a covering area at least partially covering the cutting-off wheel, and a machining area exposing the cutting-off wheel, the safety guard being pivotably supported around a pivot axis on the housing part;the flange diameter of the flange corresponding to a minimum flange diameter, and the safety guard having a first maximum distance from the output axis over a first angle range, the supporting housing part having a second maximum distance from the output axis over a second angle range, and the transmission mechanism has a third maximum distance from the output axis over a third angle range, wherein the first, second and third ...

HANDHELD, HAND-GUIDED CUTTING-OFF MACHINE

A handheld, hand-guided cutting-off machine, which includes a rotating cutting-off wheel, a supporting housing part (), an output shaft (), which is rotatably supported around an output axis (), a drive motor, a transmission mechanism (), which connects the drive motor to the output shaft (), a flange () and a safety guard (), which covers the cutting-off wheel over a covering area (). The cutting-off wheel is rotatably fixedly mounted on the output shaft () with the aid of the flange () and surrounded by the safety guard (). The safety guard () is pivotable around a pivot axis, and the pivot axis is displaced by a distance from the output axis () of the output shaft (). 19-. (canceled)10: A handheld , hand-guided cutting-off machine comprising:a supporting housing part;a cutting-off wheel having a wheel diameter;an output shaft rotatably supported around an output axis on the housing part with the aid of a bearing element;a drive motor and a transmission mechanism connecting the drive motor to the output shaft, the transmission mechanism being situated on the housing part;a flange having a flange diameter, the cutting-off wheel being rotatably fixedly situatable on the output shaft with the aid of the flange; anda safety guard having a covering area at least partially covering the cutting-off wheel, and a machining area exposing the cutting-off wheel, the safety guard being pivotably supported around a pivot axis on the housing part;the pivot axis of the safety guard being displaced by a distance from the output axis of the output shaft.11: The cutting-off machine as recited in wherein the pivot axis is displaced with respect to the output axis into the covering area of the safety guard.12: The cutting-off machine as recited in wherein the safety guard includes a fastening flange having a diameter (d) claim 11 , and the distance between the pivot axis and the output axis is greater than or equal to half the difference between the diameter (d) of the fastening ...

GRINDING TOOL, AND MAIN COMPONENT AND GRINDING COMPONENT THEREOF

A grinding tool comprises: a main component, the main component comprises a housing, a motor, and an output assembly driven by the motor to rotate; and a grinding component, detachably connected to the main component, the grinding component including a grinding body, and an input assembly rotating relative to the grinding body. The main component comprises a first connector, the input assembly includes a second connector, and the first connector is operably movable relative to the second connector to enable the first connector to be joined to the second connector. So that the output assembly is capable of driving the input assembly to drive the body to move. The grinding tool is simple in structure and easy to operate. The application further discloses a main component of a grinding tool and a grinding component of a grinding tool. 125-. (canceled)26. A grinding tool , comprising:a main component comprises a housing,a motor disposed in the housing, andan output assembly being rotatably driven by the motor; anda grinding component detachably connected to an underside of the main component, the grinding component comprises a grinding body and an input assembly located on the grinding body, the input assembly is rotatable around a first pivot axis relative to the grinding body;wherein the main component further comprises a first connecting member with a first joining portion movably relative to the housing, the input assembly comprises a second joining portion for cooperating with the first joining portion and an eccentric portion with a central axis parallel to and spaced apart the first pivot axis; the first connecting member being configured to be operably movable relative to the input assembly to make the first joining portion connect with the second joining portion, so that the grinding component is connected to the underside of the main component and is movably driven by the motor relative to the housing.27. The grinding tool according to claim 26 , wherein the ...

GRINDER

A grinder may include a motor; a spindle to which a grinding wheel is attached; bevel gears configured to transmit rotation of the motor to the spindle; a motor housing which houses the motor; a gear housing attached to a front side of the motor housing and housing the bevel gears; a spindle case attached to a lower side of the gear housing and rotatably supporting the spindle; a wheel cover attached to the spindle case and covering an outside of at least a part of the grinding wheel; and a stopper configured to prohibit removal of the wheel cover, wherein the stopper may be fastened together with the spindle case by a screw which fastens the spindle case to the gear housing. 1. A grinder comprising:a motor;a spindle to which a grinding wheel is attached;bevel gears configured to transmit rotation of the motor to the spindle;a motor housing which houses the motor;a gear housing attached to a front side of the motor housing and housing the bevel gears;a spindle case attached to a lower side of the gear housing and rotatably supporting the spindle;a wheel cover attached to the spindle case and covering an outside of at least a part of the grinding wheel; anda stopper configured to prohibit removal of the wheel cover,whereinthe stopper is fastened together with the spindle case by a screw which fastens the spindle case to the gear housing.2. The grinder according to claim 1 , whereinthe wheel cover is rotatable around a rotation axis of the spindle relative to the spindle case, and is removable by being slid along the rotation axis of the spindle at a removable position, andthe stopper prohibits the wheel cover from rotating from a normal position to the removable position.3. The grinder according to claim 2 , whereinthe stopper has a shape that contacts a side surface of the wheel cover when the wheel cover rotates from the normal position to the removable position, andthe stopper is fastened together with the spindle case by the screw on a front side of the gear ...

CONTROL SCHEME FOR OPERATING CORDLESS POWER TOOL BASED ON BATTERY TEMPERATURE

A power tool is provided including a housing; an electric motor disposed within the housing; a power terminal arranged to received electric power form a battery pack; a power switch circuit disposed between the power terminal and the electric motor; and a controller configured to control a switching operation of the power switch circuit to regulate power being supplied from the power terminal to the electric motor. The controller is configured to receive a temperature signal indicative of a temperature of the battery pack, determine if the temperature of the battery pack is below a lower temperature threshold, and operate the switching operation of the power switch circuit in a normal mode of operation if the temperature of the battery pack is greater than or equal to the low temperature threshold and in a cold mode of operation if the temperature of the battery pack is below the low temperature threshold. 1. A power tool comprising:a housing;an electric motor disposed within the housing;a power terminal arranged to received electric power form a battery pack;a power switch circuit disposed between the power terminal and the electric motor; anda controller configured to control a switching operation of the power switch circuit to regulate power being supplied from the power terminal to the electric motor, the controller being further configured to receive a temperature signal indicative of a temperature of the battery pack, determine if the temperature of the battery pack is below a lower temperature threshold, and operate the switching operation of the power switch circuit in a normal mode of operation if the temperature of the battery pack is greater than or equal to the low temperature threshold and in a cold mode of operation if the temperature of the battery pack is below the low temperature threshold.2. The power tool of claim 1 , wherein the controller is configured to monitor a rotational speed of the electric motor and control the switching operation of the ...

ANGLE GRINDER AND SHIELD ASSEMBLY THEREOF

An angle grinder includes a housing, an output shaft at least partially extending out of the housing and being rotatable about a first axis relative to the housing, a sleeve fixedly connected to the housing, a first shield surrounding the output shaft and detachably connected to the sleeve, a second shield surrounding at least a part of the first shield and detachably connected to the first shield, and a connector configured for connecting the second shield to the first shield. The second shield is formed or connected with a mounting element for cooperating with the connector, and the connector and the mounting element are separately formed. 1. An angle grinder , comprising:a housing;an output shaft at least partially extending out of the housing and being rotatable relative to the housing about a first axis;a sleeve fixedly connected to the housing, wherein the output shaft passes through the sleeve;a first shield surrounding the output shaft and detachably connected to the sleeve;a second shield surrounding at least a part of the first shield and detachably connected to the first shield; anda connector configured for connecting the second shield to the first shield;wherein the second shield is formed or connected with a mounting element for cooperating with the connector, and the connector and the mounting element are separately formed.2. The angle grinder according to claim 1 , wherein the mounting element is integrally formed with the second shield and the connector and the mounting element are detachably connected to each other.3. The angle grinder according to claim 1 , wherein the first shield forms a first space opening toward a direction facing away from the first axis when the first shield is mounted onto the sleeve and a whole of the first shield and the second shield forms a second space that opens in a direction perpendicular to the first axis when the second shield is mounted onto the first shield.4. The angle grinder according to claim 1 , wherein the ...

제스쳐의 2차원 궤적을 추정하는 방법 및 장치

본 발명은 3축 가속도계를 이용한 궤적 추정 방법 및 장치에 관한 것이다. 본 발명의 일 실시예에 따른 궤적 추정 장치는, 3축 가속도계를 이용하여 3차원 제스쳐로부터 각각의 축 별로 가속도 성분을 측정하는 움직임 감지부와, 중력 가속도 성분을 계산하고, 상기 측정된 가속도 성분에서 상기 계산된 중력 가속도 성분을 제거하는 중력 성분 제거부와, 상기 중력 가속도 성분이 제거된 가속도 성분이 나타내는 움직임의 제스쳐 종류를 판단하는 제스쳐 판단부와, 상기 중력 가속도 성분이 제거된 가속도 성분을 상기 판단된 제스쳐 종류에 따라서 서로 다른 방법에 의하여 보상하는 보상부로 이루어진다. 제스쳐, 모션, 궤적 추정, 가속도계

角磨及电动工具

本发明公开了一种角磨及电动工具，包括：直流单元、电机、驱动电路、电容电路和控制单元，其中，电容电路包括开关元件和电容，其中的控制单元驱动所述开关元件以实现对电容充电或放电的控制。该电容电路连接在直流单元与驱动电路之间，可缓冲上电过程中对电动工具电源侧的冲击，使电动工具结构紧凑，并提高其安全性能。

Hand-held machine, particularly, manual grinding machine

FIELD: process engineering. SUBSTANCE: invention relates to machine building and may be used in manual grinders. Proposed grinder has protective case coupled with its body. Protective case wall confining the intake has at least one fastening ledge extending radially into said intake. Load-bearing part whereto secured is said protective case has holding ledge to be fitted in said intake and provided with at least one recess to receive said fastening ledge. EFFECT: simple and reliable joint between case and load-bearing part. 9 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 507 052 (13) C2 (51) МПК B24B 23/02 B24B 55/05 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010142399/02, 13.03.2009 (24) Дата начала отсчета срока действия патента: 13.03.2009 (72) Автор(ы): БОГАРДИ Балас (HU), КАПЛАР Роланд (HU) (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 18.03.2008 DE 10200800732.3 (43) Дата публикации заявки: 27.04.2012 Бюл. № 12 2 5 0 7 0 5 2 (45) Опубликовано: 20.02.2014 Бюл. № 5 (56) Список документов, цитированных в отчете о поиске: WO 92/19423 А1, 12.11.1992. DE 10343060 А1, 07.04.2005. DE 3633943 А1, 07.04.1988. RU 2152862 C2, 20.07.2000. RU 2027584 C1, 27.01.1995. 2 5 0 7 0 5 2 R U (86) Заявка PCT: EP 2009/052972 (13.03.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.10.2010 (87) Публикация заявки РСТ: WO 2009/115459 (24.09.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр.1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) РУЧНАЯ МАШИНА, ПРЕЖДЕ ВСЕГО РУЧНАЯ ШЛИФОВАЛЬНАЯ МАШИНА (57) Реферат: Изобретение относится к машиностроению и может быть использовано в ручных шлифовальных машинах. Машина имеет защитный кожух, соединенный разъемным образом с ее несущей деталью. На стенке защитного кожуха, ограничивающей приемное отверстие, выполнен по меньшей мере один крепежный выступ, радиально выдающийся в ...

Dust and debris shield for powered hand tool

A dust and debris shield for a power hand tool is disclosed. According to the invention, the invention includes a bifurcated dust and debris shield that is readily affixed to a wide variety of power hand tools utilizing material processing heads. The shield is comprised of two primary shield components including a material processing head encompassing portion to be affixed to the power hand tool about an axial housing of the power hand tool, and a complementary-shaped outer housing portion to be engaged and disengaged with the head encompassing portion, the outer housing portion further including an exhaust tube for coupling to a suction or vacuum hose. According to one embodiment, the outer housing portion is engaged with the head encompassing portion in a nesting engagement achieved with a sliding fit therebetween, and the head encompassing portion is removably secured to the power hand tool with a generally circular clamping arrangement about the power output shaft housing through which the driving power shaft extends for securing the material processor head.

MANUAL MACHINE, BEFORE EVERYTHING MANUAL GRINDING MACHINE

1. Ручная машина, прежде всего ручная шлифовальная машина, имеющая защитный кожух (10), который ограждает рабочий инструмент (8) ручной машины (1), соединен разъемным образом с несущей деталью ручной машины (1) и имеет центральное приемное отверстие (11), выполненное под несущую деталь, отличающаяся тем, что на стенке (12) защитного кожуха (10), ограничивающей приемное отверстие (11), выполнен по меньшей мере один крепежный выступ (13), радиально выдающийся в приемное отверстие (11), а несущая деталь имеет вводимый в приемное отверстие (11) опорный пояс (17), причем между опорным поясом (17) и базовой частью (16) несущей детали имеется проходящий в окружном направлении крепежный паз (18), опорный пояс (17) имеет монтажную выемку (19), соответствующую крепежному выступу (13), и при установленном защитном кожухе крепежный выступ (13) находится в крепежном пазу (18) между опорным поясом (17) и базовой частью (16) несущей детали. !2. Ручная машина по п.1, отличающаяся тем, что в опорном поясе (17) выполнено несколько распределенных в окружном направлении монтажных выемок (19). ! 3. Ручная машина по п.2, отличающаяся тем, что на стенке (12) защитного кожуха (10), ограничивающей приемное отверстие (11), предусмотрено несколько распределенных в окружном направлении крепежных выступов (13). ! 4. Ручная машина по п.1, отличающаяся тем, что в стенке (12) защитного кожуха (10), ограничивающей приемное отверстие (11), выполнена по меньшей мере одна стопорная выемка (14), в которую входит опирающийся на ручную машину (1) упругий элемент (22), обеспечивающий фиксацию защитного кожуха. ! 5. Ручная машина по п.4, отличающаяся тем, что предусмотрено несколько распределенных в окружном направлении с РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 142 399 (13) A (51) МПК B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) (21)(22) Заявка: 2010142399/02, 13.03.2009 Приоритет(ы): (30) Конвенционный приоритет ...

Hand-held machine

FIELD: process engineering. SUBSTANCE: invention relates to machine building, particularly, to hand-held right-angle grinder. Proposed machine comprises reduction gear case, flange tool interface, protective device to house working tool 18 to be fitted at said tool interface to rotate thereat and at least one retainer to fix said protective device in angular position. Aforesaid retainer is integrated at least partially in flange tool interface and comprises at least one locking element interacting with at least one sat made at protective device. Unlocked locking element is arranged in the flange tool interface, while protective device angular position is fixed radially from said interface toward protective device. EFFECT: simplified design, better protection against dirt and damage. 17 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 492 989 (13) C2 (51) МПК B24B 23/02 B24B 55/05 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010122643/02, 22.09.2008 (24) Дата начала отсчета срока действия патента: 22.09.2008 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 05.11.2007 DE 102007052684.0 (72) Автор(ы): ЭЗЕНВАЙН Флориан (DE) (43) Дата публикации заявки: 20.12.2011 Бюл. № 35 2 4 9 2 9 8 9 (45) Опубликовано: 20.09.2013 Бюл. № 26 (56) Список документов, цитированных в отчете о поиске: US 5163252 A, 17.11.1992. GB 2239483 A, 03.07.1991. US 2,007/117499 A1, 24.05.2007. DE 10235923 A1, 26.02.2004. SU 1111855 A, 07.09.1984. SU 716792 A1, 25.02.1980. 2 4 9 2 9 8 9 R U (86) Заявка PCT: EP 2008/062637 (22.09.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.06.2010 (87) Публикация заявки РСТ: WO 2009/059839 (14.05.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр.1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) РУЧНАЯ МАШИНА (57) Реферат: Изобретение относится к машиностроению и может быть использовано в ручных ...

Hand-held machine

FIELD: process engineering. SUBSTANCE: invention relates to machine building, particularly, to hand-held right-angle grinder. Hand-held machine comprises case, flanged slip-type pin, protective device fitted on said pin to make working tool seat, and, at least, one device for damping and compensation of clearance between the case and protective device. Said protective device comprises, at least, one means acting in radial direction 26 and/or, at least, one means acting axially. Said means represent damping rings or damping material fixed at protective device end side. Proposed machine may incorporate protective device lock composed of lock lever with retainer cam and lock hole. In said version, damping device is arranged at lock can and/or in lock hole. EFFECT: reliable relative fixation. 3 cl, 13 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 490 108 (13) C2 (51) МПК B24B 23/02 B24B 55/05 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010122641/02, 23.09.2008 (24) Дата начала отсчета срока действия патента: 23.09.2008 (43) Дата публикации заявки: 20.12.2011 Бюл. № 35 (56) Список документов, цитированных в отчете о поиске: WO 2004/087377 A, 14.10.2004. DE 2756362 A1, 21.06.1979. DE 4344571 A1, 29.06.1995. DE 4239367 A1, 26.05.1994. DE 19841409 C1, 10.02.2000. SU 1111855 A, 07.09.1984. SU 716792 A1, 25.02.1980. 2 4 9 0 1 0 8 R U (86) Заявка PCT: EP 2008/062680 (23.09.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.06.2010 (87) Публикация заявки РСТ: WO 2009/059846 (14.05.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) РУЧНАЯ МАШИНА (57) Реферат: Изобретение относится к машиностроению и может быть использовано в ручных машинах, преимущественно в угловых шлифовальных машинах. Ручная машина содержит корпус, фланцевую посадочную шейку, защитное устройство, установленное на фланцевой посадочной шейке и ...

Protective casing for hand machine and hand machine with said casing

FIELD: machine building. SUBSTANCE: invention relates to machine building and may be used in protective casings for hand machine. Casing has carcass, bearing section to rest upon hand machine flange support, and tension member to clamp protective casing on hand machine flange support. It incorporates lock to fix casing angular position relative to hand machine. Said bearing section has, at least, one lock element to interact with lock element of said flange support. Said tension member is arranged inside or outside of said protective casing. Lock element is made integral with casing bearing section ot with tension member bearing section that adjoins the casing to overlap it. EFFECT: simple, reliable and safe design. 19 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 446 040 (13) C2 (51) МПК B24B 55/05 B24B 23/02 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008148839/02, 27.03.2007 (24) Дата начала отсчета срока действия патента: 27.03.2007 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 12.05.2006 DE 102006022386.1 (72) Автор(ы): ЭЗЕНВАЙН Флориан (DE) (43) Дата публикации заявки: 20.06.2010 Бюл. № 17 2 4 4 6 0 4 0 (45) Опубликовано: 27.03.2012 Бюл. № 9 (56) Список документов, цитированных в отчете о поиске: DE 19518854 А1, 28.11.1996. DE 10259520 А1, 01.07.2004. DE 10158334 С1, 20.02.2003. RU 2152862 С2, 20.07.2000. RU 2027581 С1, 27.01.1995. 2 4 4 6 0 4 0 R U (86) Заявка PCT: EP 2007/052899 (27.03.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12.12.2008 (87) Публикация заявки РСТ: WO 2007/131827 (22.11.2007) Адрес для переписки: 101000, Москва, М. Златоустинский пер., 10, кв. 15, "ЕВРОМАРКПАТ" (54) ЗАЩИТНЫЙ КОЖУХ ДЛЯ РУЧНОЙ МАШИНЫ И РУЧНАЯ МАШИНА С ЗАЩИТНЫМ КОЖУХОМ (57) Реферат: Изобретение относится к области машиностроения и может быть использовано в защитных кожухах для ручной машины. Кожух имеет корпус, ...

Process machine with protecting enclosure

FIELD: machine building. SUBSTANCE: invention relates to the machine building and can be used in the process machine, mainly angle grinder. The machine is equipped with the protecting enclosure having the installation ring secured by means the clamping device on the machine flange. To limit the protecting enclosure rotation relatively to the flange at limitation device is provided, it contains rest installed on the protecting enclosure, that upon the limitation device activation rests against the appropriate limiter installed on the structural component connected with the machine casing. The protecting enclosure and clamping device are made as separate structural components. The limiter is installed on the clamping device, and rest upon interaction with the limiter limits rotation of the protecting enclosure. EFFECT: increased safety of the process machine in case of the work tool destruction. 15 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 550 443 C2 (51) МПК B24B 23/02 (2006.01) B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012108435/02, 10.06.2010 (24) Дата начала отсчета срока действия патента: 10.06.2010 (72) Автор(ы): Флориан ЭЗЕНВАЙН (DE) (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.09.2013 Бюл. № 26 R U 10.08.2009 DE 102009028404.4 (45) Опубликовано: 10.05.2015 Бюл. № 13 DE 102007052684 A1, 07.05.2009. DE 3940584 A1, 13.06.1991. SU 1111855 A, 07.09.1984; . SU 716792 А1, 25.02.1980. . (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.03.2012 2 5 5 0 4 4 3 (56) Список документов, цитированных в отчете о поиске: . DE 102007057032 A1, 28.05.2009; . 2 5 5 0 4 4 3 R U EP 2010/058123 (10.06.2010) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2011/018254 (17.02.2011) Адрес для переписки: 105082, Москва, Спартаковский пер., д. 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) ...

Electric tool

本发明公开了一种电动工具，包括：直流单元、电机、驱动电路、电容电路和控制单元，其中，电容电路包括开关元件和电容，其中的控制单元驱动所述开关元件以实现对电容充电或放电的控制。该电容电路连接在直流单元与驱动电路之间，可缓冲上电过程中对电动工具电源侧的冲击，使电动工具结构紧凑，并提高其安全性能。

Hand-held machine with protective casing furnished with rotary working member

Изобретение относится к области машиностроения и может быть использовано в ручных машинах с защитным кожухом, имеющих вращающийся дискообразный рабочий орган. Ручная машина содержит корпус с шейкой, на которой съемно закреплен защитный кожух для ограждения рабочего органа, имеющий горловину. Для крепления защитного кожуха предусмотрен стяжной хомут. А для стопорения кожуха от проворачивания относительно шейки на стяжном хомуте (29) и на горловине (7) защитного кожуха, либо на горловине (7) защитного кожуха и на шейке (22) ручной машины, либо на горловине (7) защитного кожуха и на стяжном хомуте (29) и на шейке (22) ручной машины расположены/выполнены соответствующие профили. В результате обеспечивается возможность перестановка защитного кожуха в оптимальное положение и высокий уровень защиты оператора. 13 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 444 427 (13) C2 (51) МПК B24B 23/02 B24B 55/05 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009122228/02, 21.09.2007 (24) Дата начала отсчета срока действия патента: 21.09.2007 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 13.11.2006 DE 102006053301.1 (72) Автор(ы): ЭЗЕНВАЙН Флориан (DE) (43) Дата публикации заявки: 20.12.2010 Бюл. № 35 2 4 4 4 4 2 7 (45) Опубликовано: 10.03.2012 Бюл. № 7 (56) Список документов, цитированных в отчете о поиске: DE 10158334 C1, 20.02.2003. DE 10124439 A1, 21.11.2002. DE 19518854 A1, 28.11.1996. DE 10259520 A1, 01.07.2004. RU 2152862, 20.07.2000. RU 2027581 C1, 27.01.1995. 2 4 4 4 4 2 7 R U (86) Заявка PCT: EP 2007/060044 (21.09.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.06.2009 (87) Публикация заявки РСТ: WO 2008/058796 (22.05.2008) Адрес для переписки: 101000, Москва, М. Златоустинский пер., 10, кв. 15, "ЕВРОМАРКПАТ" (54) РУЧНАЯ МАШИНА С ЗАЩИТНЫМ КОЖУХОМ, ОСНАЩАЕМАЯ ВРАЩАЮЩИМСЯ РАБОЧИМ ОРГАНОМ (57) Реферат: ...

Hand-held machine tool, in particular hand-guided grinding machine

手持式工具机(1)，其具有防护罩(10)，该防护罩可拆卸地与该手持式工具机的一个支承件连接。在限定所述防护罩的所述接收孔(11)的孔壁(12)上构有一个径向上伸入的夹持凸块(13)，所述支承件具有一个可插入所述接收孔的支承接管(17)，所述防护罩固定在该支承件上，在所述支承接管中开有一个用于所述夹持凸块的夹持口(19)。

Stopper for grinding wheel cover

Изобретение относится к стопорному механизму для крышки шлифовального круга ручного шлифовального инструмента, который используют, например, для шлифовальных материалов, таких как шлифовальные камни. Шлифовальный инструмент содержит основной участок корпуса, имеющий источник приведения в движение, установленный в нем, участок редуктора, шпиндель, и крышку шлифовального круга, закрывающую часть периферии циркулярного шлифовального круга, установленного на шпинделе. Крышка шлифовального круга поддерживается на картере коробки передач, вмещающем участок редуктора таким образом, что положение можно изменять относительно оси шпинделя, чтобы изменять диапазон закрывания периферии шлифовального круга так, что регулируемый диапазон положений относительно оси шпинделя в направлении вращения шлифовального круга ограничен. При этом стопорный механизм содержит стопор на стороне шлифовального круга, поворачиваемый вместе с крышкой шлифовального круга, и стопор на стороне картера коробки передач, зафиксированный на месте относительно него, причем регулируемый диапазон положений ограничивается за счет упора стопора, расположенного на стороне шлифовального круга, в стопор на стороне картера коробки передач. Обеспечивается предотвращение рассеивания пыли, не ухудшая функции регулировки положения крышки шлифовального инструмента. 5 з.п. ф-лы, 11 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 470 762 (13) C2 (51) МПК B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010120679/02, 10.10.2008 (24) Дата начала отсчета срока действия патента: 10.10.2008 (72) Автор(ы): НУМАТА Фумитоси (JP), КИМАТА Хироказу (JP) (73) Патентообладатель(и): МАКИТА КОРПОРЕЙШН (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 22.10.2007 JP 2007-273733 (43) Дата публикации заявки: 27.11.2011 Бюл. № 33 2 4 7 0 7 6 2 (45) Опубликовано: 27.12.2012 Бюл. № 36 (56) Список документов, цитированных в отчете о поиске: WO 2007016755 А1, 15.02.2007. ...

Toolroom machine, particularly hand held power machine

一种工具机，特别是一种手持式工具机，例如磨削机，具有保护罩，该保护罩保持在工具机的支承法兰上并且可绕着支承法兰的纵轴线扭转。该保护罩可附加地绕着一个相对于在纵轴线横向延伸的翻转轴线在支承法兰上调整。

DISC GRINDING MACHINES

1. Дисковая шлифовальная машина, содержащаякорпус, содержащий привод для создания вращения,редуктор для понижения частоты вращения привода;шпиндель, соединенный с редуктором и выполненный с возможностью принимать от редуктора вращение пониженной частоты,при этом ось вращения шпинделя проходит в направлении, пересекающем продольную ось участка корпуса, если смотреть сбоку, и шпиндель выполнен с возможностью установки на него шлифовального круга;кожух шлифовального круга, содержащий корпус кожуха, выполненный с возможностью закрывать периферию шлифовального круга, и крепежный хомут, выполненный с возможностью крепления на корпусе зубчатой передачи, в которой расположен редуктор,при этом крепежный хомут выполнен с возможностью крепления вокруг корпуса зубчатой передачи при затягивании крепежного винта;стопорной выступ, выполненный на крепежном хомуте, истопорной контактный участок, выполненный на корпусе зубчатой передачи,при этом диапазон регулировки положения кожуха шлифовального круга вокруг оси вращения шпинделя ограничен за счет контакта между стопорным выступом и стопорным контактным участком, ипри этом по меньшей мере одна из контактных поверхностей стопорного выступа и стопорного контактного участка наклонена относительно радиального направления от оси вращения шпинделя.2. Машина по п.1, в которойна внутренней периферии крепежного хомута выполнен выступ, предотвращающий снятие,на внешней периферии корпуса зубчатой передачи выполнена канавка, предотвращающая снятие,причем выступ, предотвращающий снятие, вставлен в канавку, предотвращающую снятие, так, чтобы предотвратить перемещени� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2011 144 371 A (51) МПК B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011144371/02, 01.11.2011 (71) Заявитель(и): МАКИТА КОРПОРЕЙШН (JP) Приоритет(ы): (30) Конвенционный приоритет: 02.11.2010 JP 2010-246028 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ...

Adjustable guard for power tool

A power tool includes an output shaft defining a rotational axis and a housing from which the output shaft protrudes. The power tool further includes a flange at least partially surrounding the output shaft, a circumferential groove defined between the housing and the flange, and a radially inward-extending slot in the flange. The power tool also includes a rotatable guard having a first radially inward-extending projection and a plurality of apertures positioned radially about the rotational axis. The first radially inward-extending projection is receivable through the radially inward-extending slot in the flange and positioned within the groove. Furthermore, the power tool includes a lever having a detent member, and a biasing member for biasing the lever toward the rotatable guard. The detent member is receivable in one of the plurality of apertures to rotationally lock the rotatable guard relative to the housing.

Angle grinder protection hood

Hand tool, in particular hand-guided grinding machine

Eine Handwerkzeugmaschine weist eine Schutzhaube auf, die lösbar mit einem Tragteil der Handwerkzeugmaschine verbunden ist. An der eine Aufnahmeöffnung der Schutzhaube begrenzenden Öffnungswandung ist ein radial einragender Klemmvorsprung ausgebildet, wobei ein Tragteil, an dem die Schutzhaube befestigt wird, einen in die Aufnahmeöffnung einsetzbaren Tragstutzen aufweist, in den eine Klemmausnehmung für den Klemmvorsprung eingebracht ist. A hand tool has a protective hood which is detachably connected to a support part of the power tool. A radially projecting clamping projection is formed on the opening wall bounding the receiving opening of the protective hood, wherein a supporting part, on which the protective hood is fastened, has a support stub which can be inserted into the receiving opening and into which a clamping recess for the clamping projection is made.

Safety device

FIELD: process engineering. SUBSTANCE: invention relates to machine building, particularly, to hand-held right-angle grinder. Proposed device comprises, at least, one structural assembly including at least one semicircular base, ring arranged across the base main length to cover working tool in arc as well as stress absorbing element. Said structural assy has at least two sections with different absorbing properties. Said absorbing element is shaped at case ring to rate up kinetic energy. Said absorbing element has at least one section with saw-like and/or wavy profile. Said profiles extend in circumferential direction along case inner and outer sides. Structural assy has at least one radial wall to form aforesaid absorbing element. EFFECT: ruled out injury of tool user. 2 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 492 040 (13) C2 (51) МПК B24B 55/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010116342/02, 28.07.2008 (24) Дата начала отсчета срока действия патента: 28.07.2008 (72) Автор(ы): ЭЗЕНВАЙН Флориан (DE), ХОФМАНН Альбрехт (DE) (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 27.09.2007 DE 102007046311.3 (43) Дата публикации заявки: 10.11.2011 Бюл. № 31 2 4 9 2 0 4 0 (45) Опубликовано: 10.09.2013 Бюл. № 25 (56) Список документов, цитированных в отчете о поиске: US 4218853 А, 26.08.1980. US 3129537 А, 21.04.1964. US 3591989 А, 13.07.1971. US 3068620 А, 18.12.1962. DE 2756362 A1, 21.06.1979. SU 5247 A, 06.12.1926. SU 973326 A1, 15.11.1982. 2 4 9 2 0 4 0 R U (86) Заявка PCT: EP 2008/059854 (28.07.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.04.2010 (87) Публикация заявки РСТ: WO 2009/043615 (09.04.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр.1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) ЗАЩИТНОЕ УСТРОЙСТВО (57) Реферат: Изобретение относится к машиностроению и может быть использовано в ...

Hand-held power tool

本发明涉及手持式工具机，尤其角磨机(10)，具有一个传动装置壳体(12)，该壳体构有一个法兰颈部(14)，具有一个接收在法兰颈部(14)上的构成用于刀具(18)的接收区域的防护装置(20)，该防护装置可在圆周方向(22)上转动，及具有至少一个用于锁止防护装置(20)的转动位置的锁止装置(24)。本发明提出，锁止装置(24)至少部分地组合在传动装置壳体(12)的法兰颈部(14)中。

HAND TOOL

1. Ручной инструмент, содержащий:корпус инструмента, имеющий расположенный в нем электродвигатель, при этом электродвигатель имеет ось электродвигателя;устройство зубчатого редуктора, смонтированное в корпусе инструмента и имеющее шпиндель и механизм зубчатой передачи, при этом механизм зубчатой передачи соединен с электродвигателем и передает вращение электродвигателя на шпиндель;закрывающий элемент, предназначенный для закрывания по меньшей мере части концевого инструмента, смонтированного на шпинделе;соединительное устройство, соединяющее закрывающий элемент с устройством зубчатого редуктора таким образом, что закрывающий элемент может перемещаться относительно устройства зубчатого редуктора;блокирующий механизм, предназначенный для блокировки и разблокировки положения закрывающего элемента относительно устройства зубчатого редуктора; иэлемент управления, функционально соединенный с блокирующим механизмом и расположенный на стороне, противоположной соединительному устройству закрывающего элемента относительно оси электродвигателя.2. Ручной инструмент по п.1, в котором устройство зубчатого редуктора расположено на передней части корпуса инструмента и шпиндель поддерживается устройством зубчатого редуктора таким образом, чтобы быть вращаемым вокруг оси, пересекающей ось электродвигателя.3. Ручной инструмент по п.1, в котором блокирующий механизм включает в себя блокирующий палец, сцепляющийся с закрывающим элементом и фиксирующий закрывающий элемент на месте относительно концевого инструмента, и смещающий элемент, смещающий блокирующий палец в направлении к положению блокировки, РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2011 134 199 A (51) МПК B24B 55/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011134199/02, 15.08.2011 (71) Заявитель(и): МАКИТА КОРПОРЕЙШН (JP) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ИКУТА Хироки (JP), СУНАБЕ Хикару (JP) 16.08.2010 JP 2010-181546; 21.06.2011 JP 2011- ...

Frequency conversion angle electric mill power driven tools

本发明公开了变频角磨电动工具。涉及角磨电动工具技术领域，该工具功能多样，能对打磨件进行切割、粗磨和细磨，包括机壳、设置在机壳左端的工作头总成和设置在机壳右端的手柄，在机壳内分别设有细磨变频感应电机、切磨变频感应电机和设有电源插头的变频控制器；在手柄上设有细磨开关和切磨开关；工作头总成的磨盘包括呈环形状的切磨盘和转动设置在切磨盘的内环孔中的呈环形状的细磨盘；变频控制器的输出端都电连接在切磨开关的一端上和细磨开关的一端上，切磨盘由切磨变频感应电机转动驱动，细磨盘由细磨变频感应电机转动驱动，在工作头总成内设有与变频控制器连接的能检测细磨盘向上压力大小的压力检测装置。

Protective hood for portable machine tool, particularly, grinder

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

PROTECTIVE HOOD DEVICE FOR A PORTABLE MACHINE TOOL

Dispositif de capot de protection comportant un corps de base (10) avec une unité de fixation (12) qui fixe par une liaison par la force, le corps de base (10) à la machine-outil portative ainsi qu'une unité de blocage en rotation (16) du capot de protection qui comporte un élément de fixation (18). En fonctionnement l'élément (18) assure en partie une liaison par la forme, le blocage en rotation du corps de base (10) à la machine (14) l'élément de fixation (18) est en partie réalisé par l'unité de fixation (12).

METALLIC TUBE FORMING HANDLE FOR A MANUALLY GUIDED WORKING INSTRUMENT SUCH AS A CHAINSAW

L'invention concerne plus spécialement la sûreté de maintien d'un appareil portatif à moteur par une poignée tubulaire.La poignée avant d'une tronçonneuse est faite d'un tube métallique (4) qui est profilé au moins à sa surface latérale extérieure par façonnage de la paroi du tube. Le profilage du tube (4) est constitué par des saillies (5) et/ou des creux (6) s'étendant dans le sens de la longueur du tube et formés dans la paroi métallique de celui-ci. Le tube est notamment en alliage d'aluminium et produit de préférence par extrusion.Applicable au maintien d'appareils portatifs à moteur tels que tronçonneuse à meule ou à chaîne. The invention relates more particularly to the safety of holding a portable motor-driven device by a tubular handle. The front handle of a chainsaw is made of a metal tube (4) which is profiled at least at its outer side surface by shaping of the tube wall. The profiling of the tube (4) consists of projections (5) and / or recesses (6) extending in the direction of the length of the tube and formed in the metal wall thereof. The tube is in particular made of aluminum alloy and preferably produced by extrusion. Applicable to the maintenance of portable motor-driven devices such as a grinding wheel or chain saw.

PROTECTIVE HOOD DEVICE WITH ACTUATING UNIT

Dispositif de capot de protection pour une machine-outil portative. Il comporte un corps de base avec un élément de fixation (140) et un dispositif de blocage en rotation du capot de protection (112) et un élément de frein (114) qui, dans un état de fonctionnement de la machine, coopère par une fixation de rotation par une liaison par friction du corps de base par rapport à la machine et comporte une unité d'actionnement (142) pour coulisser l'élément de frein (114). L'unité d'actionnement (142) est un élément de vis (144). Protective cover device for a portable machine tool It comprises a base body with a fixing element (140) and a rotational locking device of the protective cover (112) and a brake element (114) which, in an operating state of the machine, cooperates with a rotational fixing by a frictional connection of the base body with respect to the machine and comprises an actuating unit (142) for sliding the brake element (114). The actuating unit (142) is a screw element (144).

Electric cutting instrument

Pneumatic cutting assembly stopped by one-way valve

本发明涉及一种单向阀止动的气动切割组件，其包括控制单元、制动及动力单元和执行单元，控制单元通过第一螺纹连接件与制动及动力单元连接，且制动及动力单元中工作室与外壳连接，叶片式气动马达设于外壳中，马达轴的两端均通过马达轴承支撑于外壳中，马达轴的第一端设有大锥齿轮，且大锥齿轮与执行单元中的小锥齿轮啮合传动，弹簧座和摩擦盘设于马达轴的第二端，且摩擦盘通过摩擦盘定位键与马达轴滑动连接，弹簧设于弹簧座与所述摩擦盘之间。本发明利用单向阀原理，通过摩擦盘和第二螺纹连接件分离或贴合，不仅可以实现气动切割机的失气制动，还提高了气动切割机使用安全性，具有结构紧凑，操作简单，效果可靠等优点。

Water supply for a hand-held power tool

A device for supplying water to a cutting wheel of a hand-held cut-off machine has a water-conducting line and a valve arrangement arranged in the line. The valve arrangement has a shut-off valve for controlling the water flow flowing through the line. The shut-off valve is actuated as a function of an operating signal of the cut-off machine such that in operation of the cut-off machine the water flow through the line is released by the shut-off valve. The shut-off valve interrupts the water flow through the line when the operating signal is absent.

Guide cart

A guide cart for a tool such as a parting-off grinder or similar device has a frame (4) on which are positioned at least three wheels (5, 6). In order to achieve the easy adjustment of the cutting depth of a tool positioned on the guide cart at least one wheel (6) is fixed by a first strut (10) and by a second strut (11) to the frame (4) of the guide cart (1). In this arrangement the first strut (10) is mounted on the frame (4) in such a manner that it is able to rotate and at least two mounting points (12, 13) spaced a certain distance apart are provided for mounting the second strut (11).

Hand grinder

본 발명은 그라인더 본체의 회전축 상에 결착하여 작업 대상물의 표면을 다듬질하거나 절삭, 절단하는 등의 용도로 사용하는 소모성 연마디스크를 보다 간단하고 신속하게 탈,부착하거나 풀림, 진동현상 등을 방지할 수 있는 동시에 가변형 안전커버를 구비한 핸드 그라인더에 관한 것이다. 본 발명은 전기적인 모터 구동이나 에어 압력에 의해 고속으로 가동하는 회전축이 설치된 그라인더 본체와, 몸체 상단부에 걸림턱이 형성됨과 동시에 몸체 중앙부에 플랜지를 포함한 육각몸체가 형성되어 상기 그라인더 본체의 회전축 상에 고정볼트로서 체결되는 동력전달부재와, 외주면 둘레에 요홈이 형성되고 내주면에 육각구멍이 형성되어 상기 동력전달부재에 조립되는 스톱퍼부재와, 이 스톱퍼부재의 평판부 양측에 각각 끼워져 설치되는 한쌍의 돌출봉과, 상기 동력전달부재 상에 탈,부착됨과 동시에 연마석이 고정되는 상,하부 고정판을 갖는 연마디스크로 이루어져 있으며 , 상기 스톱퍼부재의 외주 둘레면에 장착되는 그립링 및 그라인더 본체 상에 작업자의 안전을 위하여 설치되는 가변형 안전커버를 더 포함하여 구성할 수 있다. The present invention relates to an abrasive polishing pad which is bonded onto a rotating shaft of a grinder main body to easily remove abrasive abrasive discs used for finishing the surface of a workpiece, cutting, cutting, etc., To a hand grinder having a variable safety cover. The present invention relates to a grinding machine comprising a grinder body provided with a rotating shaft which is driven by an electric motor or air pressure at a high speed, a hexagonal body including a flange at the center of the body, A stopper member having a recess formed around an outer circumferential surface thereof and having a hexagonal hole formed in its inner circumferential surface to be assembled to the power transmitting member; a pair of protrusions provided on both sides of the flat plate portion of the stopper member; A grip ring mounted on an outer circumferential surface of the stopper member , and a grinding wheel mounted on the grinder main body to secure the safety of the worker on the grinder body. And a variable-type safety cover provided for the user.

Protective cover of a hand-held cut-off machine

Schutzhaube eines handgeführten Trennschleifers (1), wobei die Schutzhaube (16) einen Bügel (18) aufweist, der an der Außenseite der Schutzhaube (16) gehalten ist, wobei der Bügel (18) zwei Schenkel (38, 39) aufweist, die an gegenüberliegenden Seitenwänden (40, 41) der Schutzhaube (16) verlaufen, wobei der Bügel (18) in mindestens einer Rastposition (46, 47) mit mindestens einem Rastvorsprung (43) in mindestens einer Aufnahme der Schutzhaube (16) eingerastet ist, wobei die Aufnahme als Öffnung (27) ausgebildet ist und der Rastvorsprung (43) an einem Hohlzapfen (26) ausgebildet ist, und wobei der Bügel (18) durch eine Bewegung des Bügels (18) um die Öffnung (27) und den in der Öffnung (27) angeordneten Hohlzapfen (26) in einer Löserichtung (42) aus der Rastposition (46, 47) lösbar ist, dadurch gekennzeichnet, dass die Schutzhaube (16) Mittel aufweist, die bei einer Bewegung des Bügels (18) in Löserichtung (42) den Bügel (18) aufspreizen und den Rastvorsprung (43) mindestens teilweise aus der Öffnung (27) bewegen. Protective hood of a hand-held cut-off machine (1), the protective hood (16) having a bracket (18) which is held on the outside of the protective hood (16), the bracket (18) having two legs (38, 39) which engage Opposite side walls (40, 41) of the protective hood (16) extend, the bracket (18) being engaged in at least one locking position (46, 47) with at least one locking projection (43) in at least one receptacle of the protective hood (16), the Recording is designed as an opening (27) and the locking projection (43) is formed on a hollow pin (26), and the bracket (18) by moving the bracket (18) around the opening (27) and in the opening ( 27) arranged hollow pin (26) in a release direction (42) can be released from the latching position (46, 47), characterized in that the protective hood (16) has means which, when the bracket (18) moves in the release direction (42) Spread the bracket (18) and the locking projection (43) at least partially au s of the ...

Stopper of wheel guard in grinder

Retainer e.g. R-shaped retainer for fastening tool at oscillatory drivable drive shaft of machine tool, has set of recesses formed such that each recess extends symmetrical to radial recesses in circumferential direction

The retainer has a mounting hole (22a) formed at a tool (18a) or an oscillatory drivable drive shaft and extending through a center axis. A positive connection is formed for transmission of torque between the drive shaft and the tool. The hole comprises a central recess (24a) that outwardly extends from a set of radial recesses (26a, 30a). A set of recesses (32a) extends over a specific angular range and formed such that each recess extends symmetrical to the radial recesses in a circumferential direction. The radial recesses are formed at an angular interval of 90 degree from each other. An independent claim is also included for a machine tool.

Suction device

In order to provide a suction device for a cyclone filter of a hand-guided work apparatus, in particular a chain saw, an angle grinder or the like, including a blower which is located in a housing and a starting unit with a cable drum which is rotatably mounted about an axis, wherein ambient air sucked in with dirt particles is divided by the cyclone filter into a first air stream which is largely freed from dirt particles and into a second air stream loaded with dirt particles. The housing has an inlet and an outlet for the second air stream, which has a simple configuration and a good suction performance for air laden with dirt particles. The blower is mounted rotatably about an axis which is arranged coaxially to the cable drum axis and the housing is designed with a channel which is connected to the inlet and opens in the region of the cable drum axis, whereby the second air stream is effectively guided from the cyclone filter through the channel into the outlet.

Tool, in particular, parting-off grinder with a cutting disk and a guard element comprises at least one annular disk which contains polytetrafluoroethylene and is provided with a fabric reinforcement

The tool, in particular, in the form of a parting-off grinder with a cutting disk (3) and a guard element (4) comprises at least one annular disk which contains PTFE and is provided with a fabric reinforcement.

Hand-held implement

Handgeführter Trennschleifer mit einem Verbrennungsmotor (15) zum Antrieb einer Trennscheibe (2), mit einer Luftreinigungseinheit und mit einem Tankgehäuse (10), wobei das Tankgehäuse (10) ein Gussteil ist und wobei in dem Tankgehäuse (10) ein Kraftstofftank (12) ausgebildet ist, wobei das Tankgehäuse (10) ein tragendes Gehäuseteil des Trennschleifers (1) ist, wobei der Trennschleifer (1) einen Handgriff besitzt, der etwa in Längsrichtung (16) des Trennschleifers (1) verläuft, sowie ein Griffrohr (14), das sich zwischen einem Gehäuse (6) des Trennschleifers (1) und der Trennscheibe (2) erstreckt, wobei die Luftreinigungseinheit eine Luftfiltereinheit (8) umfasst, die einen Hauptfilter (31) und einen Feinfilter (32) umfasst, wobei der Hauptfilter (31) in einem Luftfiltergehäuse (34) angeordnet ist, dadurch gekennzeichnet, dass die Luftreinigungseinheit eine Zykloneinheit (17) mit mehreren Zyklonröhren (19) umfasst, die mindestens teilweise einteilig mit dem Tankgehäuse (10) ausgebildet sind, dass die Zykloneinheit (17) eine Rückführung (20) umfasst, durch die in den Zyklonröhren (19) abgetrennter Schmutz einem Lüfterrad zur... Hand-held cut-off machine with an internal combustion engine (15) for driving a cutting disc (2), with an air cleaning unit and with a tank housing (10), the tank housing (10) being a cast part and a fuel tank (12) being formed in the tank housing (10) is, the tank housing (10) is a supporting housing part of the cut-off machine (1), the cut-off machine (1) having a handle that runs approximately in the longitudinal direction (16) of the cut-off machine (1), and a handle tube (14) that extends between a housing (6) of the cut-off machine (1) and the cutting disc (2), the air cleaning unit comprising an air filter unit (8) which comprises a main filter (31) and a fine filter (32), the main filter (31) is arranged in an air filter housing (34), characterized in that the air cleaning unit comprises a cyclone unit (17) with a plurality of cyclone ...

Safety guard device

A safety guard device includes at least one base body and at least one safety-guard anti-rotation lock that has at least one braking element. The at least one braking element is configured to at least secure the base body against rotation relative to a hand-held power tool by a frictional connection in at least one operating mode of the hand-held power tool. The safety-guard anti-rotation lock comprises at least one self-amplification unit that is configured to increase the braking force between at least one part of the hand-held power tool and the at least one braking element in the braking state.

carriages

Grinding wheel cover of electric tool

在具有被安装于电动工具主体的第1罩和以自如拆装的方式被安装于第1罩的第2罩的砂轮罩中，抑制第2罩产生晃动的情况。砂轮罩具有第1罩、第2罩和晃动抑制部，其中，所述第1罩被安装于电动工具主体，并且用于覆盖顶端工具的电动工具主体侧的面、即第1面的至少一部分；所述第2罩以可拆装的方式被安装于第1罩，并且用于覆盖顶端工具的位于与电动工具主体相反的相反侧的面、即第2面的至少一部分；所述晃动抑制部在第2罩被安装于第1罩的状态下，抑制第2罩相对于第1罩的晃动。

Improvements to grinding wheel holders

Hand-operated, motorized cut-off machine