УСТРОЙСТВО ДЛЯ ЗАМЕНЫ САЛЬНИКА НА ШТАНГЕ ГЛУБИННОГО НАСОСА

Устройство предназначено для замены сальника на штанге насоса в скважине, оборудованной штанговым глубинным насосом. Элементы силовой фиксации штанги содержат поперечину, в которую упирается штанга, нижнее и верхнее разрезное кольца, подпирающие снизу фланец трубы, на которой установлен сальник. Поперечина и кольца скреплены между собой шпильками. На место заменяемого сальника после его демонтажа для дополнительной фиксации штанги устанавливают разрезной корпус. В разрезной корпус по конической резьбе заворачивают разрезное кольцо с уплотнениями в канавках. Фиксация штанги от выброса в процессе замены сальника обеспечивает безопасность проводимых работ.

Поднимающаяся тумба с колесами для передвижных установок для бурения нефтяных скважин

Регулируемый забойный штуцер

Буровая коронка

BOREHOLE DRILLING RIG AND METHOD

Borehole drilling rig and method for producing water.

A hand operated borehole drilling rig and method for producing water more particulary adapted for use in rural areas to supply safe drinking water. The rig in its basic form as illustrated in the attached drawing, comprises a sheer legs structure, a novel drilling guide platform and ancilliary equipment in the form of drill bits and shanks to enable a three man crew to operate the rig successfully.

BOREHOLE DRILLING RIG AND METHOD

Device to forge a hole stages reception of a pile or analoque.

PNEUMATIC SCHLAGVORRICHTUNG

BOHRGREIFER FUR PFAHLGRUNDUNGEN, WELL DRILLINGS ETC.

PNEUMATIC SCHLAGVORRICHTUNG

DEVICE FOR THE ABTEUFEN OF BOREHOLES OR DITCHES

Bohrgreifer for the production of earth boreholes

COMBINED GROUND DRILL AND DEVICE FOR TAKING A GROUND SAMPLE WITH MOEGLICHKEIT FOR HOLDING THE SAMPLE.

ERDBOHREINRICHTUNG

Bohrgreifer for the production of boreholes

Device for the manipulation of telescope-like led bars at machines for foundation works

PROCEDURE FOR THE OPERATION OF A WORKING MODULE AND A DEVICE FOR THE TRANSMISSION OF TORQUES AND NUMBERS OF REVOLUTIONS OF A POWER SUPPLY UNIT IN THE WORKING MODULE

Release device for unity-expressdrilling-ripe

Novel post hole digger

A hole-making device

Method and cartridge for obtaining soil samples

DRILLING HEAD FOR REBORING A STUCK VALVE

The present invention relates to a drilling head (2) for reboring a stuck valve (35) or drilling into the formation downhole (36). The invention furthermore relates to a drilling tool (1) comprising the drilling head and a driving unit (9). The drilling head comprises a hole saw (28) beside a drill bit for cutting out a piece (37) from the stuck valve. Furthermore, the invention relates to a drilling system comprising the drilling tool and a driving tool for moving the drilling tool downhole; a method of drilling; and a use of the drilling head.

PERCUSSION ADAPTER FOR POSITIVE DISPLACEMENT MOTORS

A percussion adapter for a positive displacement motor including a housing, a torque tube and a reciprocating percussive piston operable by application of fluid pressure thereto. The piston can be driven to create a percussive effect by rotary movement of the torque tube. The percussion adapter can have a bypass option to allow flow through the percussion adapter without operation of the piston.

AUGER STABILIZER

An auger stabilizer includes a rigid elongated body having a first end and a second end. The length of the body is adjustable between a retracted transport position and an extended drilling position. A pair of spaced apart wheels are attached at the second end of the body. A split body with two halves connected by fasteners is used to pivotally attach the first end of the body to a handle of an auger. When the body is in the extended drilling position, the pair of spaced apart wheels roll along a ground surface away from the auger as the handle of the auger descends and the pair of spaced apart wheels act to stabilize the handle of the auger against reactive torque.

Erdbohrvorrichtung.

Von Hand betätigbares Erdbohrgerät.

Erdbohrer.

Apparat zum Tiefbohren mit Kerngewinnung mittelst Rammbär.

Manually operated borehole making cylindrical tool - has toothed cylinder with operating handle and piston for core ejection

The manually operated boring tool is for making boreholes, esp. into natural soil for obtaining samples. A cylindrical hollow body has a sliding piston actuated by a rod connected to a handle. Boreholes can be made with this tool also in difficult stony ground. The piston (6) has an actuating rod (7) which slides within a tubular guide rod (4). The boring sleeve (1) top is closed and its lower edge has cutting teeth (2). These symmetrical teeth are sharpened on both edges (3) and the sleeve end with teeth is flared outwards. The sleeve is pressed in the ground with one foot and the operating handle is rotated in both directions by hand.

Vorstech-Ramme

Trivella a mano per pali, alberelli, viti e simili provvista di elicoide e lama tagliente

DEVICE FOR THE ABTEUFEN OF BOREHOLES AND DITCHES.

УСТРОЙСТВО ДЛЯ ПОВЫШЕНИЯ ЭФФЕКТИВНОСТИ ЦЕМЕНТИРОВАНИЯ СКВАЖИН С КОМБИНИРОВАННЫМИ РАБОЧИМИ ЭЛЕМЕНТАМИ

Изобретение относится к технологическому оборудованию для оснащения обсадных колонн нефтяных и газовых скважин, в частности к устройствам, которые используются для подготовки ствола скважины к цементированию с целью создания надлежащих условий формирования качественного крепления. Устройство для повышения эффективности цементирования скважин с комбинированными рабочими элементами, которое состоит из корпуса, скомпонованного с присоединительной муфтой и ниппелем, и рабочих элементов, согласно предлагаемому изобретению, корпус оснащен по внешней поверхности винтообразными шлицами и дополнительно оснащен подвижной обоймой, которая находится в шлицевом зацеплении с корпусом и снаряжена комбинированными рабочими элементами в виде дугообразных скребков, выполненных из стального упругого провода и закрепленных обоими концами по периметру на поверхности верхней части обоймы под углом 45° к вертикальной оси устройства с максимальным отдалением центральной части каждого элемента от поверхности обоймы ...

ГИДРАВЛИЧЕСКИЙ РАСШИРИТЕЛЬ СКВАЖИН С ТОЛКАТЕЛЕМ СО ВСТАВНОЙ ПРОБКОЙ ПЕРЕМЕННОЙ ФОРМЫ

Гидравлический расширитель скважин состоит из корпуса с центральным промывочным каналом, внутри которого расположен толкатель. Для обеспечения расширения ствола скважины в необходимом диапазоне диаметров центральный промывочный канал в корпусе выполнен двухступенчатым, в верхней расширенной цилиндрической части которого расположен толкатель, выполненный в виде подвижного цилиндрического поршня со вставной пробкой из легкодеформируемого материала в виде цилиндра переменной формы, размещенной под поршнем на опоре, установленной на ступенчатом переходе центрального промывочного канала и выполненной по ступенчатой форме, которая соответствует форме этого перехода, с возможностью взаимодействия поршня толкателя переменной формой пробки по меньшей мере с тремя рабочими элементами в виде лап, оснащенных резцами и установленных на осях в стенках корпуса в вертикальных прорезях, смещенных симметрично друг относительно друга на угол, пропорциональный количеству прорезей и рабочих элементов, с возможностью ...

ПРИСТРІЙ ЗВОРОТНОГО ОБЕРТАННЯ

Пристрій зворотного обертання включає верхній і нижній перехідники, корпус, сателітний і стопорний механізми. При цьому корпус виконаний з двох частин, в яких вмонтовано редукторний механізм.

DEVICE FOR DESTRUCTION OF NO FLOW AREAS IN WELLS

ЗАГЛИБНИЙ ПНЕВМОУДАРНИК

Заглибний пневмоударник включає корпус з передньою і задньою знімними кришками, всередині якого встановлений ударник з розподільною трубкою. Одним кінцем трубка закріплена в задній кришці, а іншим кінцем зв'язана з породоруйнувальним інструментом, розміщеним у передній кришці. Кришка має систему каналів, проточок і вікон, форма корпусу і форма ударника виконані симетричними щодо площини перпендикулярної їх подовжній осі, що проходить відповідно через середину їх довжин. Елементи з'єднання передньої і задньої кришок з корпусом уніфіковані з можливістю їх переустановлення з одного кінця корпусу на інший.

ПРИСТРІЙ ДЛЯ УТВОРЕННЯ РОЗШИРЕННЯ В СВЕРДЛОВИНІ

Пристрій для утворення розширення в свердловині включає металеву кришку свердловини, обсадну трубу, шток з поршнем, пружно-еластичну непроникну камеру. Пружно-еластична камера виконана у вигляді гофра, а металева кришка додатково комплектується фіксатором підйому обсадної труби по вертикалі.

ЗАСУВКА ГАЗОДИНАМІЧНОЇ ДІЇ

Малогабаритна засувка газодинамічної дії складається з циліндричного корпусу і запірного елемента, розташованого всередині корпусe, причому запірний елемент виконаний в вигляді поршня з наскрізним осьовим каналом, рівнопрохідним з перерізом корпусу, та упорної перегородки, що перекриває осьовий канал при їх взаємодії, розміщеної в корпусі з боку входу газу і забезпеченої по периферії наскрізними отворами та ущільненням, відповідним торцю поршня, при цьому поршень має кільцевий виступ в середній частині і утворює з корпусом дві герметичні камери, що сполучаються через радіальні канали в корпусі, продовжені зовні трубами високого тиску, забезпеченими запірною арматурою.

ГИДРАВЛИЧЕСКИЙ РАСШИРИТЕЛЬ СКВАЖИН С ПОДПРУЖИНЕННЫМИ ЭКСЦЕНТРИКОВЫМИ РАБОЧИМИ ЭЛЕМЕНТАМИ

Гидравлический расширитель скважины с эксцентрическими рабочими элементами состоит из корпуса с присоединительными резьбами в виде муфт и рабочих элементов. В центральной части корпуса выполнен продольный проходной канал, внутри которого установлен пружинный элемент в виде резинового рукава. В стенках корпуса выполнены по меньшей мере три вертикальных прорези, в которых установлены эксцентрические кулачки, оснащенные подпружиненными рабочими режущими элементами.

Charging type geological rock sampling coring device

A novel high power electrothermal welding drill bit for polar region ice and snow creeps into

Circumferential impact assembly

Drill improved to dig holes in the ground

Drill of pasture

Tool for digging holes for laying poles, masts, and other stents

Gripper

Device for the realization of before-holes in particular for the installation of posts of fence and analogues

PROCEEDED Of ASSEMBLY OF TWO BLOCKS OUT OF OR NOT DENSE DENSE MATERIAL CONSTITUTES HARD PARTICLES DISPERSEES IN a PHAS FLEXIBLE PHASE: APPLICATION HAS DRILLING OR CUTTING TOOLS.

Percussively driven earth borer - has hollow head housing body with nozzles directing jets at head wall

Manual drilling tool in particular for surveys with taking away

DEVICE OF SAMPLING OF GROUND

Drilling machine with posts

Drill to dig the ground

CONTAINER FOR SECTIONS, IN PARTICULAR OF SEMICONDUCTORS

Machine for the digging of the blast holes

SYSTEM FOR the USE Of a SAMPLING DEVICE Of SAMPLES IN UNSOL OR a MATERIAL OF GRANULOUS OR PULVERULENT CONSTITUTION

L'invention concerne un système pour l'utilisation d'un dispositif de prélèvement (5) d'échantillons dans un sol ou un matériau de constitution granuleuse/pulvérulente, ledit dispositif (5) comprenant une tige verticale (50) munie d'une rainure destinée à recueillir le prélèvement, sur le bord de laquelle est formée une lèvre de raclage du sol ou du matériau à prélever. Un système motorisé est prévu pour la descente du dispositif de prélèvement (5) dans le sol/matériau à prélever, un guidage lors de cette descente étant assuré par des moyens de guidage vertical (31) du dispositif de prélèvement (5). Un système motorisé est également prévu pour la rotation dans le sol/matériau à prélever du dispositif de prélèvement (5) de façon à permettre le raclage du sol ou matériau à prélever par la lèvre de raclage, la remontée et le recueil du sol/matériau raclé dans la rainure du dispositif de prélèvement (5).

Articulated manipulator arm for handling nuclear waste stored in pit beneath slab has lower part in two hinged sections

Un instrument (1) est descendu dans une fosse à orifice étroit (4) en étant guidé par un bras articulé (11) monté sur un chariot mobile sur le pourtour de l'orifice. La rotation du bras consécutive à ce mouvement et le pivotement du tronçon inférieur (13) autour de l'articulation (14) placent l'instrument (1) à la verticale de l'endroit voulu, par une commande simple si on l'exprime en coordonnées polaires. Application aux prélèvements d'échantillons et aux examens dans des fosses de déchets dangereux.

Percussively driven earth borer - has hollow head housing body with nozzles directing jets at head wall

APPARATUS FOR EXCAVATING DEEP HOLES AND TRENCHES

sistema de bombeio mecânico com êmbolos

DEVICE TO FACILITATE THE INSERTION OF PARASOL PARASOLS OR IN THE SAND

Constituido dicho dispositivo por un cuerpo cilíndrico (1) denominado ahora en más cilindro del dispositivo similar a un tubo vertical prolongado de sección cilíndrica constante constituido por dos extremos, un extremo superior cerrado (2) con una tapa hueca (3) y un extremo inferior abierto (4); y en cuyo interior está dispuesto un pistón (5) con su cubeta compresora ó aspiradora (6) que posee un sello especial para partículas abrasivas y dicho pistón se desplaza axialmente móvil según el eje Y-Y con carrera de ascenso y descenso definiendo un movimiento alternativo y conectado solidariamente a un vástago hueco (7) saliente más allá del extremo superior del cilindro para la recepción de medios de accionamiento manual (M), a medida que se desplaza el conjunto (pistón-vástago) se definen dos cámaras en el cilindro, una cámara de aspiración ó succión (8) de un fluido de partículas abrasivas (Arena húmeda, AH) determinada desde la cara inferior del pistón hasta el extremo abierto del cilindro ...

IMPROVED DRILLING APPARATUS AND DRIVE UNIT

A drive unit (40) for driving a kelly bar drilling arrangement (10), the drive unit (40) comprising a chassis (52) , the chassis carrying a kelly bar retriever (66, 68) for retrieving a kelly bar (10) from a hole or bore, the chassis (52) also carrying a kelly bar rotator (72,74), the kelly bar rotator being effective to cause rotation of the kelly bar during drilling, wherein the drive unit (40) is positioned above the kelly bar (10) when the kelly bar (10) is connected to the drive unit (40).

AUTOMATIC HANDHELD SHOVEL WITH AUGER

An electrical handheld shovel system includes a handheld shovel with an auger bit. The shovel includes a motor configured to rotate the auger bit and a portable power source configured to power the motor. The shovel includes an input/output (I/O) device and a controller to control rotation of the auger bit. The shovel has a handle and a shovel portion. In one example, the power source is integrated into the handle, and in another example, the power source is detachably coupled to the handle. The shovel has a gearbox coupled to the motor. The shovel portion includes a blade positioned proximal to the auger bit to retain debris from the auger bit. The auger bit has a flute that is partially covered by the blade, and the blade defines a discharge opening configured to discharge at least some of the debris.

NANO PARTICLE REINFORCED POLYMER ELEMENT FOR A STATOR AND ROTOR ASSEMBLY

DRILLING HEAD FOR REBORING A STUCK VALVE

DEVICE FOR TAKING SAMPLES FROM A MATERIAL OF GRANULAR OR POWDERY COMPOSITION

The invention concerns a device for taking samples in a material of granular or powdery composition, comprising a rod (12) at one end of which is mounted a hand grip (10) for rotating the wheel and at the other end of which is a driving head (13). Said device is characterised in that the head (13) is mounted symmetrically on the rod (12) and comprises lower and lateral parts having a profiled shape, the rod (12) having a specific form for scraping the material over its entire length and the head (13) having a cross-section smaller, equal or larger than the cross-section of the rod (12), in specific proportions based on the type and/or moisture content of the material to be sampled.

EXCAVATING DEVICE

PURPOSE: To increase efficiency of drilling work and to improve workability by drilling the inside of a casing by a drilling bucket by way of rotating a kelly-bar and drawing up the drilling bucket by way of shrinking retreating the kelly-bar. CONSTITUTION: When a kelly-bar drive device 51 is driven, a ring gear 55 is rotated by a casing pipe 43 as reaction force and a kelly-bar 63 is rotated, and accordingly, a drilling bucket 89 on its head end drills sediment to be excavated in the casing pipe 43. Thereafter, when the excavated sediment fills the inside of the drilling bucket 89, the kelly-bar 63 is degenerated and the drilling bucket 89 is drawn up from the casing pipe 43. Then, the drilling bucket 89 makes contact with a base 53, the kelly-bar drive device 51 is removed from the upper end part of the casing pipe 43, and it is suspended on a crawler crane 79 with the drilling bucket 89. After soil discharging work, when the drilling bucket 89 is inserted into the casing pipe 43 and ...

EARTH DRILL

PROBLEM TO BE SOLVED: To prevent a wire rope for suspending a kelly-bar from making contact with a support frame when moving a leader between a raised attitude and a horizontal attitude. SOLUTION: A roller device 44 having guide roller 48 and 53 is provided on the cylinder support part 43 of the support frame 41, so that a main winding rope 28 and an auxiliary winding rope 29 make contact with the guide roller 53 and the guide roller 48, respectively when the leader 10 is moved from the raised attitude to the horizontal attitude. Accordingly, when the main winding rope 28 and the auxiliary winding rope 29 are wound in the state where the leader 10 is laid in the horizontal attitude, the ropes 28 and 29 are smoothly moved toward a main winding winch 7 and an auxiliary winding winch 8 by the guide rollers 53 and 48 without being rubbed with the cylinder support part 43 of the support frame 41. COPYRIGHT: (C)2003,JPO ...

БУРОВОЙ ИНСТРУМЕНТ ДЛЯ ПРОХОДКИ СКВАЖИН ПОД ФУНДАМЕНТНЫЕ СВАИ И БУРОВАЯ УСТАНОВКА

Изобретение относится к области бурения, а именно к инструменту для проходки в грунте скважин под фундаментные сваи. Инструмент содержит центральную трубу, коаксиальную оси бурения, по меньшей мере, одно ориентированное поперечно оси бурения ребро, на котором расположены несколько режущих зубьев, и выполненное в виде бурового ковша транспортирующее устройство для приема и/или транспортирования грунтового материала, разработанного режущими зубьями. На инструменте установлен буровой наконечник, по меньшей мере, с двумя резцами, расположенными с опережением режущих зубьев в направлении бурения, смещенными относительно друг друга и отстоящими друг от друга с образованием центрального свободного пространства. Резцы выполнены стреловидными на нижних концах с длинной наружной кромкой и короткой внутренней кромкой, а для разработки центральной колонки грунта предусмотрена по существу горизонтальная кромка. Буровой наконечник разъемно закреплен в трубчатом приемном устройстве на нижнем конце центральной ...

РУЧНОЙ БУР, ОСНАЩЕННЫЙ СМЕННЫМ РЕЖУЩИМ ОРГАНОМ

Ручной бур, оснащенный сменным режущим органом, предназначен для бурения ям при строительстве, в личных подсобных хозяйствах, малых фермах. Ручной бур, содержит ось бура с центрирующим наконечником, съемную рукоятку, соединительный элемент, сменный режущий орган, расположенный и зафиксированный с помощью резьбы в нижней части оси бура выше центрирующего наконечника, соединительный элемент закреплен в верхней части оси бура с возможностью перемещения расположенной в нем съемной рукоятки вдоль своей собственной оси, причем рукоятка выполнена прямой или с изогнутым концом, ось бура выполнена цельной или из удлиняющих звеньев, а вся конструкция является разборной. Сменный режущий орган, состоит из двух наклонных по отношению друг к другу лемехов, соединенных с крепежным элементом, причем крепежный элемент имеет резьбу. Предложенная полезная модель позволяет, используя сменный режущий орган разного размера, одним буром вручную бурить ямы разных диаметров при отсутствии дополнительных источников ...

СПОСОБ РАСШИРЕНИЯ И КАЛИБРОВАНИЯ СТВОЛА СКВАЖИНЫ

... 1. Способ расширения и калибрования ствола скважины, отличающийся тем, что применяется долото специальное, включающее полый корпус с промывочным каналом вдоль оси инструмента и промывочным отверстием на торце, нижняя часть корпуса имеет торцевую и боковые рабочие поверхности, армированные вооружением, а верхняя хвостовая часть устройства имеет форму цилиндра, оканчивающегося резьбой, причем нижняя часть корпуса состоит из имеющей цилиндрическую форму пилотной центрирующей части, на боковой поверхности которой выполнены промывочные каналы и расширяющей лопастной части, имеющей форму цилиндра большего диаметра, в межлопастном пространстве которой размещены промывочные отверстия.2. Способ по п.1, отличающийся тем, что на торцевой рабочей поверхности пилотной центрирующей части нижней части корпуса долота специального выполнен промывочный канал.3. Способ по п.1, отличающийся тем, что в качестве вооружения долота специального использованы резцы из твердосплавного материала, и/или алмазные PDC ...

Раздвижное устройство для посадки вставного инструмента в башмак колонны

Вставное долото (двухшарошечное и более) для вращательного бурения

Wafer container

A wafer container 26 for transporting and holding wafers horizontally comprises a substantially rectangular upright frame portion 30 for receiving a door 28, with a horizontal top section 50 extending from an upper frame member 58 and a horizontal base section 40 extending from a lower frame member 64, and a U-shaped transparent moulded shell portion 52 connected to the top section and the base section. The frame portion may be moulded separately from the shell portion, and may include shelved support columns 27, which may be separately formed from a static dissipative material, and may be conductively connected to the frame portion. The container may have an equipment interface 82 on its base section and a robotic flange 100 on its top section, and may have side handles (128, fig 4) which secure the shell portion to the frame portion. The shelves may have support beads (230, fig 14) to reduce wafer contact and stops (226, fig 14) to restrict wafer movement.

DRILLING ARRANGEMENT FOR EARTH DRILLING

Device to the Abteufen and delivering pits od. such.

Procedure for extending the sole of a borehole and a device for its execution

Device for the absorption of pushing and oscillations arising in a drill pipes set

SYSTEM FOR THE USE OF A DEVICE FOR TAKING A SAMPLE OUT OF THE REASON OR A GRANULAR OR POWDERED MATERIAL

DRILLING HEAD FOR DRILLING OUT A JAMMED VALVE

Hand drilling equipment to the withdrawal of ground samples

DEVICE TO THE SAMPLING OF PULVRIGEN OR GRANULAR PRODUCTS

DRILLING FLUSHING MECHANISM FOR DRILLING TOOLS.

DEVICE FOR BORING A GRADATED HOLE FOR THE ADMISSION OF A POST OR SUCH A THING.

Grip arm drill.

DEVICE FOR THE RAISING AND DROPPING A DROP HAMMER

Drilling head for reborinq a stuck valve

AUGER STABILIZER

An auger stabilizer includes a rigid elongated body having a first end and a second end. The length of the body is adjustable between a retracted transport position and an extended drilling position. A pair of spaced apart wheels are attached at the second end of the body. A split body with two halves connected by fasteners is used to pivotally attach the first end of the body to a handle of an auger. When the body is in the extended drilling position, the pair of spaced apart wheels roll along a ground surface away from the auger as the handle of the auger descends and the pair of spaced apart wheels act to stabilize the handle of the auger against reactive torque.

APPARATUS FOR USE WITH A TRACKED VEHICLE FOR DRIVING AN ICE CUTTING AUGER

COMBINATION SOIL AUGER AND SOIL CORE SAMPLER WITH SAMPLE RETAINING CAPACITY

A combination soil auger and soil care sampling apparatus has a cylindrical body with soil-cutting blades disposed at one end thereof and alternative cap and handle combinations attached at the opposite end for soil auger or soil core sampling use. In the soil auger mode, the body has an open cap with a bail and handle for augering into soil. In the core sampling mode, the body had a closed cap and handle combination and a removeable sleeve insert within the body adapted to receive and hold a soil sample as the apparatus is rotated in the soil to be sampled. The sleeve insert is removeable for capping and retention of the soil sample.

DEVICE FOR TAKING SAMPLES FROM A MATERIAL OF GRANULAR OR POWDERY COMPOSITION

La présente invention concerne un dispositif de prélèvement d'échantillons dans un matériau de constitution granuleuse ou pulvérulente, comprenant une tige (12) à une extrémité de laquelle est monté un volant (10) destiné à faire tourner l'outil et à l'autre extrémité de laquelle se trouve une tête (13) d'enfoncement. Ce dispositif se caractérise en ce que la tête (13) est montée symétriquement sur la tige (12) et comprend des parties inférieures et latérales avant une forme profilée, la tige (12) ayant une forme déterminée pour effectuer un raclement du matériau sur toute la profondeur et la tête (13) ayant une section transversale inférieure, égale ou supérieure à la section transversale de la tige (12), dans des proportions déterminées en fonction de la nature et/ou de l'humidité du matériau à prélever.

BIT ADJACENT STABILIZER AND STEEL

LINEAR MOTOR TO PRE-BIAS SHUTTLE FORCE

A method of controlling one or more operating pressures within a subterra nean borehole that includes a choke assembly comprising a housing having an inlet passage, an axial bore, and a chamber, wherein a portion of the axial bore forms an outlet passage, and a choke member adapted for movement in the housing to control the flow of a fluid from the inlet passage to the outlet passage. The method may include applying a closing force to move the choke member toward a closed position, and applying a bias force to the choke memb er when in the closed position to reduce an overpressure required to initiat e movement of the choke member from the closed position.

PULLBACK SYSTEM FOR DRILLING TOOL

A pullback system for a drilling tool includes features to retain a pulling cable. The drilling tool includes a drill bit body for carrying a plurality of cutting teeth. The drill bit body has a first side and an opposite second side. The drill bit body also defines a first pullback device passage that extends through the drill bit body from the first side to the second side. The first pullback device passage extends generally along a passage axis that extends through the drill bit body. The first pullback device passage includes at least a portion adjacent to the first side that curves as the surface extends in a direction along the passage axis. The passage axis is positioned along a reference plane that generally bisects the drill bit body.

WATER PRESSURE POSTHOLE DIGGER

A water pressure operated posthole digging tool. The tool includes a vertically elongate pipe with an enlarged mandrel member having a generally circular cross section mounted on its lower end, and means for connecting the upper end of the conduit to a source of water pressure. The water pressure is discharged through an open end at the bottom of the mandrel. member, so that soil is dislodged at the bottom of the posthole bore. The flow of water then passes upwardly through the annular cavity around the sides of the mandrel member so as to scour out of the sides of the bore. The lower end of the mandrel member is tapered so as to accelerate the flow of water as this passes into the annular cavity around the body, and upper taper slows the flow as it exits the cavity and flows up the excavated bore. The mandrel member may be formed of solid plastic material.

Single Handled Post Hole Digger

The present invention is a light-weight, single handle post hole digger. The single handle of the post hole digger is generally comprised of an outer elongated vertical handle and an inner elongated vertical shaft located substantially within the outer handle. The post hole digger of the present invention has two blade members used to cut into the ground and to loosen soil when in an open configuration and then used to capture and remove soil when in a closed configuration. In some embodiments, a first stationary blade member is permanently attached to the inner elongated vertical shaft by an adjustable pin or bolt and a second movable blade member is connected to the outer elongated handle via a connection rod.

Hole Boring Device

A hole boring device includes a housing including a proximal end, an open distal end, and a bore extending longitudinally from the distal end to the proximal end. An inlet connectable to a pressurized water source is disposed on the proximal end of the housing. A spraying device in fluid communication with the inlet is disposed in the bore and is oriented towards the open distal end of the housing. The spraying device is configured discharge a stream of water passing therethrough so as to form a boring stream configured to bore a hole in a ground surface. In some embodiments, the spraying device is configured to rotatably discharge the pressurized stream of water. A depth collar disposed annularly about the housing defines the depth of the bored hole. A slot disposed along the housing allows debris from the boring process to exit the housing, leaving an empty bored hole. 1) A hole boring device , comprising:a housing including a proximal end, an open distal end, and a bore extending longitudinally from the distal end to the proximal end;an inlet disposed on the proximal end, the inlet configured to receive a connection to a pressurized water source;a spraying device disposed in the bore and oriented towards the open distal end, the spraying device in fluid communication with the inlet;wherein the spraying device is configured discharge a stream of water passing therethrough so as to form a boring stream configured to bore a hole in a surface.2) The hole boring device of claim 1 , wherein the spraying device comprises a nozzle including internal components configured to rotate internally within a housing of the nozzle so as to discharge a revolving fluid stream.3) The hole boring device of claim 1 , wherein the spraying device comprises a rotating nozzle having a rotatable outer housing configured to automatically rotate as a fluid passes therethrough.4) The hole boring device of claim 1 , further comprising:a cover disposed within the bore at the proximal end of the ...

One Trip Drill and Casing Scrape Method and Apparatus

A drilling assembly is tripped in a cased hole to make more open hole. The assembly features retracted scrapers and a closed circulation sub so that the drilling can commence with string pressure delivered to bit nozzles due to the circulation sub being in a closed position. When drilling is done and the bit is to be removed, an object lands on a seat on a sleeve that acts as a piston to break scraper retainers for casing scraping deployment and to open the circulation port. A bypass opens around the seated ball when the sleeve shifts to allow flow around the seated ball for circulation while scraping. Drilling and casing scraping are accomplished in a single trip. 1. A single trip borehole drilling method for extending a borehole through an existing tubular , comprising:running in together a drilling assembly on a string that further comprises a drill bit and at least one scraper and a circulation sub;retracting said scraper to the string and keeping at least one circulation port closed when drilling with said drill bit;positioning said scraper in the existing tubular;releasing said scraper and opening at least one port in said circulation sub by delivering at least one object into the borehole and applying pressure with said object located on at least one seat on at least one moving sleeve;flowing fluid through said port while using said scraper to scrape the existing tubular as said drilling assembly is brought through the existing tubular.2. The method of claim 1 , comprising:releasing said scraper after positioning said scraper in said existing tubular by raising said bit.3. The method of claim 2 , comprising:retaining said scraper with a breakable member.4. The method of claim 3 , comprising:breaking said breakable member with movement of said at least one sleeve within a housing for said scraper.5. The method of claim 4 , comprising:using a shear pin as said breakable member.6. The method of claim 4 , comprising:delivering said at least one object to said at ...

REAMING SYSTEM

A reaming system including an elongated tubular housing having a first end and a fluid inlet aperture. The elongated tubular housing includes a second end having a fluid outlet aperture. The reaming system includes a first bearing pack disposed circumferentially about the first end of the housing. The first bearing pack is only of sacrificial materials which may be drilled through. The reaming system includes an auger. The reaming system includes a reaming tool functionally coupled to the auger. The reaming tool may be a tool selected from the group consisting of: a float shoe, a reamer shoe, and a guide shoe. The reaming system includes a second bearing pack functionally coupled to a bottom end of the auger. The reaming system includes a connection sub functionally coupled to a bottom end of the auger that transfers rotational motion from the auger to an attached tool. 1. A reaming system , comprising: a1) a first end having a fluid inlet aperture;', 'a2) a second end, opposite the first end, having a fluid outlet aperture and', 'a3) a coupling structure at the first end of the housing that selectably mates with a bottom end of a casing tube; and, 'a) an elongated tubular housing, includingb) a first bearing pack disposed circumferentially about the first end of the housing; andc) an auger disposed within the housing and functionally coupled to the first bearing pack such that the auger may rotate with respect to an attached casing tube and including a rotation transmission structure that transfers rotation motion.2. The system of claim 1 , further comprising a reaming tool functionally coupled to the auger.3. The system of claim 1 , further comprising a casing tube coupled to the housing.4. The system of claim 1 , further comprising a hydraulic fluid disposed within the housing and flowing therethrough.5. The system of claim 1 , further comprising a pump in fluid communication with the casing tube.6. The system of claim 2 , wherein the reaming tool is a tool ...

HOLE-VAC

An attachment used for digging and removing debris from a hole is connected to a flexible hose of a typical shop vacuum device, and includes a handle, a first tubular section, a second tubular section, a plurality of depth indicators, a bubble level, and a cutting head. This is a light-weight accessory that transforms the existing shop vacuum into an excavating and digging tool instantaneously. There is less energy expended and time spent digging holes. 1. An attachment for connection to a suction hose or tubular section of a vacuum , comprising:a handle having an adjustable clamp;a first tubular section connected to said handle;a second tubular section having a first end and a second end, wherein said first end is connected to said first tubular section;a cutting head connected to said second end of said second tubular section.2. The attachment as claimed in claim 1 , further comprising a plurality of depth indicators disposed on said first tubular section and said second tubular section.3. The attachment as claimed in claim 1 , further comprising a bubble level indicator disposed in said handle.4. The attachment as claimed in claim 1 , wherein said adjustable clamp includes a threaded member and a wing nut.5. The attachment as claimed in claim 1 , wherein said handle includes a body portion which is in a generally a hollow tubular shape having an open end claim 1 , and further comprising an extension arm extending from said body portion adjacent said open end; and wherein said extension portion has an opening therethrough for receiving a threaded member for use in adjusting said adjustable clamp. Not applicable.Not applicable.The present invention relates to vacuum attachments which are implements for digging, and for removing debris from holes being dug.It is a problem in the art to remove debris from a hole being dug.Also, it is a problem in the art to provide a relatively low cost and light-weight attachment for a vacuum cleaner for use as a digging implement. ...

Hand Powered Impact Boring Tool

A hand powered impact boring tool is used to bore small diameter holes underneath obstructions so utility cables can be buried underground and beneath those obstructions. Making use of a manual powered slide hammer striking against a forward anvil creates the impact force that drives the shaft and tip through the ground. Sliding the hammer backwards against the reverse anvil will back the tool out of the ground leaving a hole for cable to be passed through. 1. What I claim as my invention is a hand powered impact boring tool having a axial motion , comprising of:(a) A tip located on the end of the shaft.(b) A shaft that continues into the slide rail.(c) A forward anvil at one end of the slide rail dividing the shaft from the slide rail, (forward axial action).(D) A reverse anvil at the opposing end of the slide rail from the forward anvil, (reversing axial action).(e) A slide hammer positioned freely, sliding, between the two anvils and on the slide rail; creating the impact force when striking either anvil.2. The hand powered impact boring tool is man-powered and does not require an external power source such as electric , hydraulic , or pneumatic.3. The hand powered impact boring tool makes a linear hole/void in any direction but is intended for horizontal use. U.S. Pat. No. 875,940, Daniel Lee Mason, Filed Aug. 30, 1904; Published Jan. 7, 1908. Titled, Percussively-Driven Tool. U.S. Pat. No. 3,407,884, Kazimierz Zygmunt, Tadeusz Gerlach, Filed Apr. 11, 1967; Published Oct. 29, 1968. Titled Two-Way Ground Burrowing Device. U.S. Pat. No. 5,934,386, Glen Prater, Jr., William P. Hnat, Robert L. Collins, Songnian Wang, Filed Jul. 6, 1998; Published Aug. 10, 1999. Titled, Small Diameter Impact Boring Tool Impact Head.The Hand Powered Impact Boring Tool concerns the installation of utility cables underneath obstructions that cannot be removed or gone around, such as a sidewalks. Buried utilities such as Fiber optic, coaxial, phone, low voltage, invisible dog fence cable ...

Auger Blade

An auger blade includes a main body which defines a ground penetrating tip portion, a first blade and a second blade. The first and second blades extend from the tip portion towards an opposing end portion of the auger blade. The first and second blades are annularly arranged around a centerline of the auger blade. The first blade includes an arcuate inner surface and the second blade includes an arcuate inner surface. 1. A auger blade , comprising:a main body defining a ground penetrating tip portion, a first blade and a second blade, the first and second blades extending from the tip portion towards an opposing end portion of the auger blade, the first and second blades being annularly arranged around a centerline of the auger blade;wherein the first blade includes an arcuate inner surface and the second blade includes an arcuate inner surface.2. The auger blade as in claim 1 , wherein the arcuate inner surfaces of both the first and second blades are substantially concave.3. The auger blade as in claim 1 , wherein the first blade includes an arcuate outer surface and the second blade includes an arcuate outer surface.4. The auger blade as in claim 3 , wherein the arcuate outer surfaces of the first and second blades are substantially convex.5. The auger blade as in claim 1 , wherein the tip portion includes an arcuate first side surface and an arcuate second side surface claim 1 , wherein the arcuate first side surface includes a concave portion and a convex portion.6. The auger blade as in claim 5 , wherein the concave portion of the arcuate first side surface of the tip portion is continuous with the arcuate inner surface of the second blade.7. The auger blade as in claim 5 , wherein the convex portion of the arcuate first side surface of the tip portion is continuous with the arcuate outer surface of the first blade.8. The auger blade as in claim 1 , further comprising a connecting member for connecting the auger blade to a shaft claim 1 , wherein the first ...

Method and apparatus for creating a preferential breakage plane within cured columns

A frangibility device for creating a preferred breakage plane or weakness within cured columns such as rigid inclusions (RIs) and/or vibratory concrete columns (VCCs) comprises a cutting disc, an elongate strut attached to the center of the disc, and a detachable handle for turning. The disc comprises a thin geometric plate slit from center to periphery, so that a slicing wing can be bent downward at a shallow angle from the slit. The slicing wing advances the cutting disc through the cementious material of the uncured column. When the disc reaches the desired depth, the handle is removed and both disc and strut are left in place during curing.

Digging apparatus

A digging apparatus ( 10, 300 ) is disclosed. The digging apparatus ( 10,300 ) includes a handle assembly ( 14, 14 a, 314 ), a motor ( 32 ), a main switch ( 22, 322 ) electrically connected with the motor ( 32 ). The main switch ( 22,322 ) is movable between a first position in which operation of the motor ( 32 ) is allowed and a second position in which operation of the motor ( 32 ) is prevented, and a drilling bit ( 88, 88 a, 388 ) is driven by the motor ( 32 ). The drilling bit ( 88, 88 a, 388 )has a longitudinal axis (P-P, M-M), and when the switch member ( 22, 322 ) is in the first position, the motor ( 32 ) is adapted to drive the drilling bit ( 88, 88 a, 388 ) to rotate about the longitudinal axis (P-P, M-M) in a clockwise direction in response to pushing of the handle assembly ( 14, 14 a, 314 ) in a direction towards the drilling bit ( 88, 88 a, 388 ), and the motor ( 32 ) is adapted to drive the drilling bit ( 88, 88 a, 388 ) to rotate about the longitudinal axis (P-P, M-M) in an anti-clockwise direction in response to pulling of the handle assembly ( 14, 14 a, 314 ) in a direction away from the drilling bit ( 88, 88 a, 388 ).

WELL DRILLING APPARATUS AND METHOD OF USE

Embodiments provide a well-drilling apparatus and a method of use. 1. A well-drilling apparatus comprising: a first tubular portion;', 'at least a second tubular portion;', 'a third tubular portion;', 'a first fastener, the first fastener removably affixing the first tubular portion to the second tubular portion,', 'a second fastener, the second fastener removably affixing the second tubular portion to the third tubular portion;', 'a plurality of discharge ports spaced along the length of the plurality of tubular portions;', 'a bit affixed to the first tubular portion, the bit comprising:', 'a plurality of prongs; and', 'an inlet port; and, 'a drill stem comprising a tubular elongated body, the tubular elongated body comprisingan air hose retainer affixed adjacent the bit, the air hose retainer configured to retain a portion of an air hose;wherein an open end of the air hose is disposed adjacent the inlet port to create a reverse flow of air, water, and debris within the drill stem.2. The apparatus of claim 1 , wherein the position of the plurality of discharge ports are determined based upon a cutting and discharge rate based upon an ideal submersion depth of the inlet port below a drill water elevation in the well.3. The apparatus of claim 1 , further comprising an outlet port affixed to a top tubular portion.4. The apparatus of claim 1 , further comprising a cap affixed to a top tubular portion.5. The apparatus of claim 1 , the air hose positioned within the drill stem.6. The apparatus of claim 1 , further comprising a plurality of removable plugs claim 1 , wherein the plurality of removable plugs is configured to engage and close off the plurality of discharge ports.7. The apparatus of claim 1 , further comprising a plurality of actuators connected to a computing system claim 1 , wherein the computing system sends protocol to the plurality of actuators to move the plurality of removable plugs adjacent the plurality of discharge ports.8. A system for drilling a ...

Drill Bit for Chiselling Rock

A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a plurality of cutting faces, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. The intake opening has a noncircular cross section. 17.-. (canceled)8. A drill bit for chiselling rock , comprising:an impact face at an insertion end of the drill bit;a hollow shank, wherein a delivery passage is defined within the hollow shank; anda drill head, wherein the drill head has, at a front end of the drill head, a plurality of cutting faces, an intake opening, and an intake passage and wherein the intake passage connects the intake opening to the delivery passage;wherein the intake opening has a noncircular cross section.9. The drill bit as claimed in claim 8 , wherein the intake opening has a triangular shape.10. The drill bit as claimed in claim 8 , wherein a surface area of the intake opening is at least 30% greater than a surface area of a largest circle that is inscribable in the intake opening.11. The drill bit as claimed in claim 8 , wherein the intake opening takes up more than 10% of the front end of the drill head.12. The drill bit as claimed in claim 8 , wherein the intake opening takes up less than 25% of the front end of the drill head.13. The drill bit as claimed in claim 8 , wherein each of the plurality of cutting faces has a rake face and a flank face which both form a part of the impact face and are in contact with one another along a chisel edge.14. The drill bit as claimed in claim 8 , wherein the plurality of cutting faces are sintered tungsten carbide. The present invention relates to a drill bit for the chiselling of rock. In particular, the invention relates to a drill bit in the case of which drill cuttings can be transported away via a hollow ...

Vehicular auger implement

A vehicular auger implement. The implement is configured to be operated by a single operator and comprises an auger having a bit. The implement includes a four bar linkage comprising a first bar, a second bar, a third bar, and a fourth bar. The first bar is coupled to each of the second bar and a hydraulically actuated arm. The auger is operably coupled to the fourth bar. The four bar linkage is configured to convert a rotational motion of the second bar to a vertical motion of the auger. A vehicle to which the auger implement is coupled is configured to remain stationary while a hole is bored using the vertical motion of the auger.

TRANSMISSION MECHANISM FOR ELECTRIC DRILL AND ELECTRIC DRILL INCLUDING THE SAME

The invention provides a transmission mechanism for an electric drill and the electric drill including the transmission mechanism. The transmission mechanism includes a primary planet carrier, a gear assembly, a secondary planet carrier, and a secondary gear assembly. The gear assembly comprises a primary gear ring and a primary gear set located in the primary gear ring. The primary gear set has two primary planetary gear sets mounted on the primary planetary gear shaft. The secondary planet carrier is provided with secondary planetary gear shafts and an output shaft. The secondary gear assembly includes a secondary gear ring and a secondary planetary gear set. The secondary planetary gear set is pivotably mounted on the secondary planetary gear shafts, an outer side of the secondary planetary gear set engages with the secondary gear ring, and an inner side of thereof engages with the sun gear. 1. A transmission mechanism for an electric drill , the transmission mechanism comprising:a primary planet carrier having a plurality of primary planetary gear shaft arranged at one end thereof and a sun gear arranged at the other end thereof;a gear assembly comprising a primary gear ring and a primary gear set located in the primary gear ring;a secondary planet carrier comprising a plurality of secondary planetary gear shafts arranged at one end thereof and an output shaft arranged at the other end thereof; anda secondary gear assembly comprising a secondary gear ring and a secondary planetary gear set located in the secondary gear ring;wherein, the primary gear set comprises at least two primary planetary gear sets; the at least two primary planetary gear sets are pivotably mounted on the primary planetary gear shaft, an outer side of the primary planetary gear set engages with the primary gear ring, and an inner side of the primary planetary gear set engages with a central gear arranged on a motor output shaft;wherein, the secondary planetary gear set is pivotably mounted ...

ELECTRIC DRILL

The invention provides an electric drill including a bracket with a handle, a drill rod, a motor assembly, and a switch assembly. The switch assembly includes a first micro switch configured to activate or deactivate the motor assembly, a switch pivotably mounted on the handle through a pivot and cooperating with the first micro switch, and a self-locking button engaged with the switch and configured as: when the self-locking button is in a first state, the self-locking button abuts against the switch to prevent the switch from rotating around the pivot; when the self-locking button is in a second state, the self-locking button is disengaged with the switch, and the switch can rotate around the pivot. 1. An electric drill , comprising:a bracket having a handle;a drill rod;a motor assembly mounted on the bracket for driving the drill rod to rotate; anda switch assembly mounted on the handle;wherein, the switch assembly comprises:a first micro switch configured to activate or deactivate the motor assembly;a switch pivotably mounted on the handle through a pivot, and cooperating with the first micro switch; anda self-locking button engaged with the switch and configured as: when the self-locking button is in a first state, the self-locking button abuts against the switch to prevent the switch from rotating around the pivot; when the self-locking button is in a second state, the self-locking button is disengaged with the switch, and the switch can rotate around the pivot.2. The electric drill of claim 1 , wherein an abutting arm is arranged on a side of the self-locking button facing the switch claim 1 , and a receiving groove is arranged on a side of the switch facing the self-locking button; wherein when the self-locking button is in the first state claim 1 , the abutting arm and the receiving groove are misaligned claim 1 , and the abutting arm abuts against the switch; and wherein when the self-locking button is in the second state claim 1 , the abutting arm and the ...

Drill assembly and valve

The present invention provides a drill assembly that includes a drill for drilling rock, a support for supporting the drill, and a valve for releasably securing the support and drill together. The valve is adapted to receive a fluid from a pump means and controllably provide the drill and the support with the fluid for operation of the drill and the support.

Single Handle Post Hole Digger

The present invention is a light-weight, single handle post hole digger. The single handle of the post hole digger is generally comprised of an outer elongated vertical handle and an inner elongated vertical shaft located substantially within the outer handle. The post hole digger of the present invention has two blade members used to cut into the ground and to loosen soil when in an open configuration and then used to capture and remove soil when in a closed configuration. In some embodiments, a first stationary blade member is permanently attached to the inner elongated vertical shaft by an adjustable pin or bolt and a second movable blade member is connected to the outer elongated handle via a connection rod.

AUTOMATIC HANDHELD SHOVEL WITH AUGER

An electrical handheld shovel system includes a handheld shovel with an auger bit. The shovel includes a motor configured to rotate the auger bit and a portable power source configured to power the motor. The shovel includes an input/output (I/O) device and a controller to control rotation of the auger bit. The shovel has a handle and a shovel portion. In one example, the power source is integrated into the handle, and in another example, the power source is detachably coupled to the handle. The shovel has a gearbox coupled to the motor. The shovel portion includes a blade positioned proximal to the auger bit to retain debris from the auger bit. The auger bit has a flute that is partially covered by the blade, and the blade defines a discharge opening configured to discharge at least some of the debris. 1. A digging system , comprising:a handheld shovel including a handle and a shovel portion attached to the handle, wherein the shovel portion includes a blade and an auger bit;wherein the blade is positioned proximal to the auger bit to retain debris from the auger bit;wherein the auger bit has a flute that is at least partially covered by the blade;wherein the blade defines a discharge opening configured to discharge at least some of the debris;wherein the auger bit extends along a longitudinal axis; andwherein the blade is offset to one side of the longitudinal axis with an opposite side of the auger bit exposed.2. The digging system of claim 1 , wherein the handheld shovel includes a motor configured to rotate the auger bit.3. The digging system of claim 2 , wherein the shovel includes a gearbox coupled to the motor.4. The digging system of claim 3 , wherein the gearbox and the motor are housed inside the handle.5. The digging system of claim 4 , wherein the handle has a motor-gearbox diameter that is at most 40 millimeters (mm).6. The digging system of claim 2 , wherein the handheld shovel includes an input/output (I/O) device and a controller to control rotation ...

SHOVEL DEVICE

A shovel device for digging in ground or other material is provided. The shovel device comprises a handle having a first end and a second end. A blade having an attachment end and a digging edge opposite the attachment end is provided with the attachment end secured to the second end of the handle. A plurality of teeth is secured to the digging edge of the blade and extending beyond the digging edge of the blade. During digging operations, the teeth contact the ground or other material prior to the digging edge of the blade contacting the ground or other material. 1. A shovel device for digging in ground or other material , the shovel device comprising:a handle having a first end and a second end;a blade having an attachment end and a digging edge opposite the attachment end, the attachment end secured to the second end of the handle; anda plurality of teeth secured to the digging edge of the blade and extending beyond the digging edge of the blade;wherein during digging operations, the teeth contact the ground or other material prior to the digging edge of the blade contacting the ground or other material.2. The shovel device of wherein the second end of the handle is releasably secured to the attachment end of the blade.3. The shovel device of wherein the plurality of teeth are evenly spaced along the digging edge of the blade and equally spaced from each other.4. The shovel device of wherein each of the teeth are parallel to each other.5. The shovel device of wherein the teeth are aligned with the handle such that the teeth and the handle are substantially parallel to each other.6. The shovel device of and further comprising:five (5) teeth.7. The shovel device of wherein the teeth are welded to the digging edge of the blade.8. The shovel device of wherein the teeth are integral to the digging edge of the blade claim 1 , formed on the digging edge of the blade during manufacture of the shovel device.9. The shovel device of wherein the blade is a round- or square- ...

ARRANGEMENT FOR FEEDING AT LEAST A PART OF A DRILING MACHINE, DRILLING SYSTEM AND METHOD FOR FEEDING AT LEAST A PART OF A DRILLING MACHINE

An arrangement for feeding at least a part of a drilling machine in at least a first direction. A drilling system and a method are provided. The arrangement includes a first end portion, a second end portion, an outer cylinder, a piston and a piston rod. The piston and the piston rod are displaceably arranged in the outer cylinder such that the piston and the piston rod, the outer cylinder and the end portions delimits a first chamber and a second chamber for a pressure medium in the outer cylinder on a respective side of the piston. A valve is connected to the first chamber for reducing the pressure medium in the first chamber. The valve is arranged to be opened at an increased pressure in the second chamber. 1. An arrangement for feeding at least a part of a drilling machine in at least a first direction , the arrangement comprising:a first end portion,a second end portion,an outer cylinder,a piston,a piston rod,wherein a first part of the arrangement is arranged to be attached to the drilling machine, a second part of the arrangement is arranged to be supported by the ground and the outer cylinder extends between the end portions, whereby the piston and the piston rod are displaceably arranged in the outer cylinder such that the piston along with the piston rod, the outer cylinder and the end portions delimits a first chamber and a second chamber for a pressure medium in the outer cylinder on a respective side of the piston, anda valve connected to the first chamber for reducing the pressure medium in the first chamber and which valve is arranged to be opened at an increased pressure in the second chamber.2. The arrangement according to claim 1 , wherein the valve further is arranged to be closed at at least one of a decreased pressure in the second chamber or an increased pressure in the first chamber.3. The arrangement according to claim 1 , wherein the second chamber is connected to a valve chamber claim 1 , such that a pressure in the valve chamber increases ...

Post-Hole Digger with Foot Rests

A foot rest for a post-hole digger and post-hole diggers using the foot rest are disclosed. The foot rest includes two portions, one attached to each shaft of the post-hole digger. The two portions have structure that allows them to engage one another when the two shafts of the post-hole digger are vertical. The foot rest does not extend beyond the bore diameter of the post-hole digger. Thus, in order to keep the user's feet on the relatively short foot rest, the contact surface of the foot rest may be angled. In some embodiments, the foot rest may be symmetrical, so that either side may be used as the upper surface. A post-hole digger including the foot rests typically includes at least two foot rests, spaced from one another and facing different directions along the shafts of the tool. 1. A foot rest for a post-hole digger , comprising: a first attachment section adapted to attach the first portion to a first shaft of the post-hole digger,', 'a first foot rest portion with a first, up-angled upper foot contact surface, and', 'a first complementary set of engaging members; and, 'a first portion including'} a second attachment section adapted to attach the second portion to a second shaft of the post-hole digger,', 'a second foot rest portion with a second, up-angled upper foot contact surface, and', 'a second complementary set of engaging members adapted to engage the first complementary set of engaging members to interlock the first and second portions such that the first and second upper foot contact surfaces are substantially contiguous with one another., 'a second portion including'}2. The foot rest of claim 1 , wherein the foot rest is sized such that it does not extend beyond a bore diameter of the post-hole digger.3. The foot rest of claim 1 , wherein the first and second upper foot contact surfaces are angled so as to be higher toward an outer edge and lower toward the first and second shafts.4. The foot rest of claim 1 , wherein the first and second ...

CUTTING RATE CONTROL FOR AN ICE DRILL

A cutting head includes a main body that is attachable to an ice drill shaft at a top side. The main body includes a bottom side that has a bottom peripheral surface. The cutting head includes at least one cutting edge that is disposed on the main body. The cutting edge is configured to perform a cutting operation at the bottom side of the main body. The cutting head includes a cutting rate control pad that is disposed on the bottom side of the main body. The cutting rate control pad extends away from the bottom peripheral surface. 1. A cutting head for an ice drill comprising:a main body attachable to an ice drill shaft at a top side, the main body including a bottom side having a bottom peripheral surface;at least one cutting edge disposed on the main body, the cutting edge being configured to perform a cutting operation at the bottom side of the main body; anda cutting rate control pad disposed on the bottom side of the main body, wherein the cutting rate control pad extends away from the bottom peripheral surface.2. The cutting head of claim 1 , wherein the cutting edge is spaced away at a first distance claim 1 , in a direction away from the bottom side of the main body claim 1 , from an ice interfacing surface of the cutting rate control pad claim 1 , the ice interfacing surface being configured to contact an ice surface during a drilling operation.3. The cutting head of claim 2 , wherein the first distance is between about 0.180 inches and about 0.220 inches.4. The cutting head of claim 1 , wherein the cutting rate control pad is removable from the main body.5. The cutting head of claim 1 , wherein the cutting rate control pad is integrally formed with the main body.6. The cutting head of claim 1 , further comprising a plurality of cutting rate control pads disposed on the bottom side of the main body.7. The cutting head of claim 1 , further comprising a plurality of cutting edges disposed on the main body.8. The cutting head of claim 1 , wherein the cutting ...

One Safety Control Device for Petrol Post Hole Digger

This utility type patent publishes a safety control device for petrol post hold digger. It includes an operation frame, respective handles in the opposite two sides of the frame; one is throttle control handle in the right side and another is balance control handle in the left side. The safety control device is mounted on the above of the frame near left side, connected with engine in the middle place of the operation frame by one cable, with the throttle control handle in the right side by another cable. A long touch rod is installed underneath the safety control device, sticking outside of the operation frame to position A as shown in bellow picture. 1. A safety control device for petrol post hold digger , includes an operation frame , respective handles in the opposite two sides of the frame; one is throttle control handle in the right side and another is balance control handle in the left side. Characteristic is one safety control device is mounted on the frame and connected with engine by throttle cable2. According to the safety control device claim 1 , characteristic is one touch rod is installed.3. According to the safety control device claim 1 , characteristic is throttle handle is connected with safety control device by a throttle cable. This utility type patent relates to machinery construction technology, particularly in safety control device for petrol post hole digger.Petrol post hole digger is a kind of engine machine, designed for garden cultivation, tree planting, post hole digging etc. It saves human labor and increases efficiency.Common petrol post hole diggers only suit for working in even, soft soil ground. If in the process encountering big tree roots or rocks, the drill bit will have a sudden stop which will throw all the inertia and engine torque to operator. Facing this situation, in natural the operator will hold handles firmly and try to control the machine, its much easier to rotate together with the frame and fall down. This is a big ...

COMPACT PORTABLE ROCK DRILL SYSTEM

A system includes a utility chassis for use with rock drills for automatic and safe drilling of target surfaces. The utility chassis has a lightweight vertical frame member with an overall center of gravity that allows for manual lift handles to be arrayed about the center of gravity for easy loading and unloading onto transportation vehicles without the need for separate heavy machinery. The utility chassis incorporates a spring-centered closed position valve for drill rotation and a three-way spring-centered retract with two open feed positions valve for increased safety. A hinged drill rod guide cap is incorporated into the drill rod guide for quick removal of the chassis from lodged or broken drill rods. The chassis is lighter, more ergonomic, and safer than prior art chasses. 2. The rock drill system of wherein the anti-vibration assembly further comprises at least one dampener interlacing between the control tree and the vertical frame member.3. The rock drill system of wherein the at least one dampener interfaces between the operator side of the vertical frame and a base of the control tree.4. The rock drill system of wherein the control tree further comprises two or more pillars extending from a base of the control tree to the one or more operator handle grips.5. The rock drill system of wherein the at least one dampener is comprised of an elastomeric material.6. The rock drill system of wherein the elastomeric material is selected from the group consisting of rubber claim 6 , thermosets claim 6 , and thermoplastics claim 6 , or any combination thereof.7. The rock drill system of wherein the anti-vibration assembly is secured to the vertical frame member via a sandwich mount.8. The rock drill system of claim 1 , further comprising at least one hose that is secured to the rock drill system by at least one hose restraint.9. The rock drill system of claim 8 , wherein each hose comprises an operator end and the hose restraint secures the operator end of at least ...

TWO-HANDLED HOLE DIGGER AND BLADES FOR USE WITH HOLE DIGGER

A hole digger is provided. The hole digger includes a first handle assembly and a second handle assembly. The first handle assembly includes a first grip, a first intermediate portion, and a first blade. The first intermediate portion extends between the first grip and the first blade. The second handle assembly including a second grip, a second intermediate portion, and a second blade. The second intermediate portion extends between the second grip and the second blade. The second handle assembly is pivotally coupled to the first handle assembly such that a front surface of the first blade faces a front surface of the second blade. The first blade is not identical to the second blade. At least one stiffener is coupled to at least one of the first or second blades. 1. A hole digger comprising:a first handle assembly comprising a first grip, a first intermediate portion, and a first blade, said first intermediate portion extending between said first grip and said first blade;a second handle assembly comprising a second grip, a second intermediate portion, and a second blade, said second intermediate portion extending between said second grip and said second blade, said second handle assembly pivotally coupled to said first handle assembly such that a front surface of said first blade faces a front surface of said second blade, said first blade is not identical to said second blade; andat least one stiffener coupled to at least one of said first and second blades.2. A hole digger in accordance with claim 1 , wherein each of said first blade and said second blade extend from an upper edge to a lower edge claim 1 , each said intermediate portion couples against said blade upper surface claim 1 , at least one of said first blade and said second blade lower edge is formed with at least one prong.3. A hole digger in accordance with claim 1 , wherein the at least one stiffener comprises at least one of a steel material claim 1 , an iron material and any other metal material ...

Automated Post Hole Digger

An automated post hole digger for efficient, assisted hole digging includes a base plate having a top side separated from a bottom side forming an inner cavity. A pair of jaws is pivotably coupled to the base plate. A bottom end of each of a pair of handles is coupled to the pair of jaws to move the pair of jaws between an open position and a closed position. A hole saw is coupled to the base plate and comprises a motor, a battery pack, a piston coupled to the motor and extending through the bottom side, and a bit head that is selectively engageable with the piston. The piston is driven by the motor and the bit head is configured to break up hard soil, clay, concrete, and other material. A plurality of controls is coupled to the pair of handles to operate the hole saw. 1. An automated post hole digger comprising:a base plate, the base plate having a top side separated from a bottom side forming an inner cavity;a pair of jaws coupled to the base plate, each of the pair of jaws having a hinge coupled within a proximal end and a distal end extending away from the bottom side of the base plate, the hinge being coupled to the base plate to allow the jaw to pivot, the pair of jaws having an open position and an alternate closed position in which the distal ends of each jaw touch, the pair of jaws being configured to secure hard soil, clay, concrete, rocks, or a post base;a pair of handles coupled to the pair of jaws, a bottom end of each of the pair of handles being coupled to the proximal end of the pair of jaws, the pair of handles being used to move the pair of jaws between the open position and the closed position with greater leverage;a hole saw coupled to the base plate, the hole saw comprising a motor, a battery pack, a piston coupled to the motor and extending through the bottom side, and a bit head being selectively engageable with the piston, the piston being driven by the motor and the bit head being configured to break up hard soil, clay, concrete, rocks, or a ...

CUTTING RATE CONTROL FOR AN ICE DRILL

A cutting head includes a main body that is attachable to an ice drill shaft at a top side. The main body includes a bottom side that has a bottom peripheral surface. The cutting head includes at least one cutting edge that is disposed on the main body. The cutting edge is configured to perform a cutting operation at the bottom side of the main body. The cutting head includes a cutting rate control pad that is disposed on the bottom side of the main body. The cutting rate control pad extends away from the bottom peripheral surface. 1. A cutting head for an ice drill comprising:a main body attachable to an ice drill shaft at a top side, the main body including a bottom side having a bottom peripheral surface;at least one cutting edge disposed on the main body, the cutting edge being configured to perform a cutting operation at the bottom side of the main body; anda cutting rate control pad disposed on the bottom side of the main body, wherein the cutting rate control pad extends away from the bottom peripheral surface.2. The cutting head of claim 1 , wherein the cutting edge is spaced away at a first distance claim 1 , in a direction away from the bottom side of the main body claim 1 , from an ice interfacing surface of the cutting rate control pad claim 1 , the ice interfacing surface being configured to contact an ice surface during a drilling operation.3. The cutting head of claim 2 , wherein the first distance is between about 0.180 inches and about 0.220 inches.4. The cutting head of claim 1 , wherein the cutting rate control pad is removable from the main body.5. The cutting head of claim 1 , wherein the cutting rate control pad is integrally formed with the main body.6. The cutting head of claim 1 , further comprising a plurality of cutting rate control pads disposed on the bottom side of the main body.7. The cutting head of claim 1 , further comprising a plurality of cutting edges disposed on the main body.8. The cutting head of claim 1 , wherein the cutting ...

SHARPENED EDGE YARD TOOL

A yard tool blade is provided with a distal edge to dig a work material, with a surface to support the work material and an adaptor at a proximal end for receipt of a handle. The distal edge is sharpened to an angle within a tolerance of forty to fifty degrees for a reduced thickness to cut the work material. A method for manufacturing the yard tool blade forms a yard tool blade blank. A cutting edge is machined on a distal edge of the yard tool blade blank. The yard tool blade blank is formed into a shaped yard tool blade. The shaped yard tool blade is heat treated after the cutting edge is machined on the distal edge. 1. A method for manufacturing a yard tool blade comprising:forming a yard tool blade blank;machining a cutting edge on a distal edge of the yard tool blade blank;forming the yard tool blade blank into a shaped yard tool blade; andheat treating the shaped yard tool blade after the cutting edge is machined on the distal edge.2. The method of further comprising stamping the yard tool blade blank from flat steel.3. The method of further comprising machining the cutting edge within a range of forty to fifty degrees.4. The method of further comprising stamping the yard tool blade blank into a curved yard tool blade before heat treating the shaped yard tool blade.5. A yard tool blade manufactured from a method comprising:forming a yard tool blade blank;machining a cutting edge on a distal edge of the yard tool blade blank;forming the yard tool blade blank into a shaped yard tool blade; andheat treating the shaped yard tool blade after the cutting edge is machined on the distal edge.6. A yard tool blade with a distal edge to dig a work material claim 1 , with a surface to support the work material claim 1 , and an adaptor at a proximal end for receipt of a handle claim 1 , wherein the distal edge is sharpened to an angle within a tolerance of forty to fifty degrees for a reduced thickness to cut the work material.7. The yard tool blade of wherein the yard ...

Device for taking soil samples

FIELD: soil sampling. SUBSTANCE: the offered device has probe in form of tubular body with through channel forming receiving hollow for soil samples. Device also has nose connected to lower part of tubular body. Nose has cylindrical through channel whose diameter is smaller than that of through channel of tubular body. Nose has bearing protrusion. Device also has holding unit and device for positive penetration of probe into soil. Nose has, under bearing protrusion, radial protrusion separating the cylindrical through channel of nose into upper and lower parts, with lower part having diameter smaller than that of upper one. Holding unit is located in zone of bearing protrusion. EFFECT: higher efficiency. 19 cl, 20 dwg 410128 0с ПЧ ГЭ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 087 707 ' (51) МПК 13) С1 Е 21 В 49/02, 25/10 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (30) (46) (56) (22) Заявка: 5001223103, 12.02.1990 Приоритет: 11.02.1989 [ОЕ Р 3904105.0 16.11.1989 ОЕ Р 3938166.6 11.01.1990 ОЕ Р 4000677.8 Дата публикации: 20.08.1997 Ссылки: Авторское свидетельство СССР М {91967, кл. Е 21 В 49/02, 1980. Авторское свидетельство СССР М 352001, кл. Е 21 В 4902, 1972. Авторское свидетельство СССР М 899844, кл. Е 21 В 2502, 1982. Авторское свидетельство СССР М 1040135, кл. Е 21 В 4902, 1983. Авторское свидетельство СССР М 1214916, кл. Е 21 В 4902, 1986. Заявка ФРГ М 2545851, кл. С 01 М 1052, 1977. Авторское свидетельство СССР М 46919, кл. Е 21 В 2500, 1936. (86) Заявка РСТ: ЕР 90/00226 (12.02.90) (71) Заявитель: Георг Фритцмейер ГмбХ унд Ко. (ОЕ) (72) Изобретатель: Герхард Ределы[ПЕ], Марфред Шури[ОЕ] (73) Патентообладатель: Георг Фритцмейер ГмбХ унд Ко. (0Е) (54) УСТРОЙСТВО ДЛЯ ВЗЯТИЯ ОБРАЗЦОВ ПОЧВЫ (57) Реферат: Использование: изобретение относится к области отбора проб грунта и может быть использовано для взятия образцов почвы. Сущность изобретения: устройство содержит зонд в виде трубчатого корпуса с проходным каналом, образующим ...

Rock cutting tool

Изобретение относится к нефтяной и газовой промышленности. Породоразрушающий инструмент содержит кольцевой полый корпус с наружными и торцевыми лопастями, в которых закреплены скважинно- и кернообразующие резцы, и центральное кернообразующее отверстие, выполненное в нижней части корпуса, промывочную систему для его охлаждения и очистки забоя от шлама потоком жидкости. В верхней части корпуса выполнена резьба для соединения с винтовым забойным двигателем или буровыми трубами. Внутренняя часть корпуса снабжена неосесимметричной поверхностью, наклоненной относительно оси породоразрушающего инструмента, в которой выполнены отверстия промывочной системы. По внутреннему диаметру корпуса выполнены пазы в осевом направлении для промывочной жидкости. Между отверстиями промывочной системы дополнительно установлены радиальные резцы. Обеспечивается повышение эффективности и надежности бурения скважин в крепких и в очень крепких породах, в особенности при наклонно-направленном бурении. 4 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 693 082 C1 (51) МПК E21B 7/00 (2006.01) E21B 10/42 (2006.01) E21B 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21B 7/00 (2019.02); E21B 10/42 (2019.02); E21B 11/00 (2019.02) (21)(22) Заявка: 2018113981, 16.04.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Акционерное общество "Пермнефтемашремонт" (RU) Дата регистрации: 01.07.2019 (56) Список документов, цитированных в отчете о поиске: RU 2360096 C1, 27.06.2009. SU (45) Опубликовано: 01.07.2019 Бюл. № 19 2 6 9 3 0 8 2 R U (54) Породоразрушающий инструмент (57) Реферат: Изобретение относится к нефтяной и газовой промышленности. Породоразрушающий инструмент содержит кольцевой полый корпус с наружными и торцевыми лопастями, в которых закреплены скважинно- и кернообразующие резцы, и центральное кернообразующее отверстие, выполненное в нижней части корпуса, промывочную систему для его ...

Device for drilling holes in ice

Combination soil auger and soil core sampler with sample retaining capacity

DRILLING DEVICE FOR A LESS PART OF THE DRILLING MACHINE, DRILLING SYSTEM AND METHOD OF FEEDING AT A LESS PART OF THE DRILLING MACHINE

2016121177 А ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) РЦ (11) = (51) МПК ЕВ 19086 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016121177, 30.10.2014 (71) Заявитель(и): КОНСТРАКШН ТУЛЗ ПК АБ (5Е) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): 01.11.2013 ЗЕ 1351294-2 КАРЛССОН Магнус ($8), , ЛУНДГРЕН Андерс (58), (43) Дата публикации заявки: 04.12.2017 Бюл. № 34 ИВЕРТССОН Роберт (5Е) (85) Дата начала рассмотрения заявки РСТ на национальной фазе: 01.06.2016 (86) Заявка РСТ: ЗЕ 2014/051279 (30.10.2014) (87) Публикация заявки РСТ: \О 2015/065278 (07.05.2015) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) УСТРОЙСТВО ДЛЯ ПОДАЧИ ПО МЕНЬШЕЙ МЕРЕ ЧАСТИ БУРИЛЬНОЙ МАШИНЫ, БУРОВАЯ СИСТЕМА И СПОСОБ ПОДАЧИ ПО МЕНЫПЕЙ МЕРЕ ЧАСТИ БУРИЛЬНОЙ МАШИНЫ (57) Формула изобретения 1.Устройство (1) для подачи по меньшей мере части бурильной машины (2) по меньшей мере в первом направлении, содержащее первый концевой участок (За), второй концевой участок (35), наружный цилиндр (4), поршень (5) и поршневой шток (6), при этом первая часть устройства (1) выполнена с возможностью прикрепления к бурильной машине (2), вторая часть устройства (1) выполнена с возможностью опирания на грунт, и наружный цилиндр (4) проходит между концевыми участками (За, 35), при этом поршень (5) и поршневой шток (6) выполнены с возможностью перемещения в наружном цилиндре (4), при этом поршень (5) вместе с поршневым штоком (6), наружный цилиндр (4) и концевые участки (За, 35) определяют границы первой камеры (7) и второй камеры (8) для среды (9) под давлением в наружном цилиндре (4) на соответствующей стороне поршня (5), при этом устройство (1) дополнительно содержит клапан (10), соединенный с первой камерой (7), для уменьшения количества среды (9) под давлением в первой камере (7), и данный клапан (10) выполнен с возможностью открывания при увеличенном давлении во второй камере (8). ...

Drilling device for slope reinforcement

本发明公开了一种用于边坡加固的钻孔装置，包括支架（1），支架（1）为倒π型结构；支架（1）的一对立板（2）顶部与矩形框（3）铰接；矩形框（3）外侧的连接轴（4）与分度盘（5）固定连接，分度盘（5）经定位螺栓（6）与立板（3）外侧连接；矩形框（3）上设有贯穿矩形框顶面和底面钻杆（7）。本发明用于边坡加固，能够方便钻设竖直和倾斜的孔眼，提高了使用的便捷性和钻孔过程装置的稳定性。

Post hole digger

The subject invention provides a post hole digger which facilitates the digging of deep uniform diameter post holes. Th post hole digger accomplishes this by crossing the handles to close the shovel blades. This allows the handles to stay within the diameter of the hole opening, removing the need to increase the diameter of the hole opening as the depth of the hole is increased.

Blasthole digging machine

Drilling machine

MANUALLY GUIDED DRILLING TOOL.

Bent lever for ice drill and ice drill comprising such bent lever

FIELD: agriculture. SUBSTANCE: bent lever comprises a connection device (10), which includes the first and the second connection parts (20 and 30), fixed to the lower and upper parts (5a and 5b) of the bent lever rod. To the second connection part (30) a locking element (11) is attached as protruding radially from it and made as capable of following the second connection part (30) in process of its rotation and displacement along the axis. The locking element (11) is arranged as capable of placement in a slot (23) in the first end of the first connection part (20), when the upper part (5a) of the bent lever rod is in the unfolded working position. To retain the locking element (11) in the slot (23), preventing mutual rotation between connection parts (20, 30) in the working position, so that it could go out from the slot (23), to provide for mutual rotation of connection parts (20, 30) in the non-working position, a fixing mechanism is provided. EFFECT: new design of an ice drill lever is proposed. 15 cl, 9 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 483 536 (13) C2 (51) МПК A01K 97/01 (2006.01) B25G 3/38 (2006.01) F25C 5/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009113419/13, 09.04.2009 (24) Дата начала отсчета срока действия патента: 09.04.2009 (73) Патентообладатель(и): МОРА АЙС АБ (SE) R U Приоритет(ы): (30) Конвенционный приоритет: 09.04.2008 SE 0800790-8 (72) Автор(ы): ШЕБЕРГ Ларс (SE) (43) Дата публикации заявки: 20.10.2010 Бюл. № 29 2 4 8 3 5 3 6 (45) Опубликовано: 10.06.2013 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: RU 68238 U1, 27.11.2007. RU 2000124790 A, 27.08.2002. US 5782442 A, 21.07.1998. 2 4 8 3 5 3 6 R U (54) КОЛЕНЧАТАЯ РУКОЯТКА ДЛЯ ЛЕДОВОГО БУРА И ЛЕДОВЫЙ БУР, СОДЕРЖАЩИЙ ТАКУЮ РУКОЯТКУ (57) Реферат: Коленчатая рукоятка содержит соединительное устройство (10), которое включает первую и вторую соединительные части (20 и 30), неподвижно соединенные с ...

Arrangement for feeding at least a part of a drilling machine, drilling system and method for feeding at least a part of a drilling machine

An arrangement (1) for feeding at least a part of a drilling machine (2) in at least a first direction, a drilling system and a method is provided. The arrangement (1) comprises a first end portion (3a), a second end portion (3b), an outer cylinder (4), a piston (5) and a piston rod (6). The piston (5) and the piston rod (6) are displaceably arranged in the outer cylinder (4) such that the piston (5) along with the piston rod (6), the outer cylinder (4) and the end portions (3a, 3b) delimits a first chamber (7) and a second chamber (8) for a pressure medium (9) in the outer cylinder (4) on a respective side of the piston (5), wherein the arrangement (1) further comprises a valve (10) connected to the first chamber (7) for reducing the pressure medium (9) in the first chamber (7) and which valve (10) is arranged to be opened at an increased pressure in the second chamber (8).

DEVICE FOR TAKING EARTH SAMPLES

The invention concerns a device for taking samples in a material of granular or powdery composition, comprising a rod (12) at one end of which is mounted a hand grip (10) for rotating the wheel and at the other end of which is a driving head (13). Said device is characterised in that the head (13) is mounted symmetrically on the rod (12) and comprises lower and lateral parts having a profiled shape, the rod (12) having a specific form for scraping the material over its entire length and the head (13) having a cross-section smaller, equal or larger than the cross-section of the rod (12), in specific proportions based on the type and/or moisture content of the material to be sampled.

Blasthole digging machine

Post hole digger

This invention provides a post hole digger having a first, traverse pivot point, located on the medial portions of two handle members, and a second, blade assembly pivot point located at the medial point of the blade assemblies. Because the first pivot point is a traverse pivot point, the handle members are only required to travel through a limited range of motion. Additionally, the second, blade assembly pivot point is preferably an offset pivot point. Thus, because the second, blade assembly pivot point is disposed at a medial point of the blade assemblies, the motion of the handle members, which are coupled to the upper ends of the blade assemblies, is reversed relative to the lower ends of the blade members.

A hole-making device

A device for making holes in the ground includes a tubular cutter (1) having an open first end (2) for insertion into the ground, and an opposite, second end from which a guide means (4) extends. A percussion weight (5) is guided for movement along the guide means and is intended to exert a hammering force on the second end of the cutter. Connected to the end of the percussion weight (5) that lies distal from the tubular cutter (1) is a tubular part (8) which is mounted for axial movement along the guide means (4) and which carries a handle (7) for maneuvering of the percussion weight. The cutter (1) and associated guide means (4) on the one hand and the percussion weight (5) with associated tubular part (8) carrying the handle (7) on the other hand can be locked together releasably against axial movement and are non-rotatable, or are also releasably locked against rotational movement.

Wafer carrier

Tubular probe for taking ground samples

Post hole digger

A post hole digger has a frame attached to three-point linkage of a tractor. A boom has its proximal end pivotally connected to the frame, and an auger is pivotally mounted to the distal end of the boom. The boom is formed by a pair of laterally spaced arms, each of which is an integrally formed angled arm. The boom arms are bent from straight lengths of steel in a cold working process, to reduce manufacturing time and cost.

Accelerator safety control device of small gasoline digging machine

本实用新型公开了一种小型汽油挖坑机的油门安全控制装置，包括操纵架，操纵架相对的两侧分别设有把手，右侧为油门操纵把手，左侧为操纵架平衡把手，操纵架上方固定设有油门控制装置。油门控制装置与操纵架中间位置所安装的汽油机通过油门线相连接，油门控制装置一侧设有触碰杆，油门操纵把手通过油门线与油门控制装置相连接。当挖坑机工作时，如果旋转的钻头碰到树根或者石块而停止转动，操作者的身体会触碰到触碰杆，使之转动来调节油门控制装置，减少汽油机的油量供给，将汽油机的转速降低，避免了因扭矩过大而产生的危险。本实用新型设计合理，操作安全，简单轻便，实用性强。

Funnel hole ice auger

An ice auger includes a pair of ice boring blades fixedly attached to the bottom of a straight inner auger drive bar. A brace and bit arrangement at the top of the drive bar is for rotating the drive bar and either forcing it down toward the ice to bore a cylindrical hole of predetermined diameter through the ice or to force it up away from the ice after the hole has been bored to ream out a portion of that hole to form an inverted funnel shape opening. A tubular outer sleeve surrounds the drive bar and is movable between an upper boring condition and a lower reaming condition with respect to the drive bar. Two slotted longitudinally extending ice reaming blades are pivotally mounted at their top portions to the ream control sleeve. A reaming blade camming support bar attached to a bottom portion of the drive bar carries camming pins slidable in the reaming blade slots. These reaming blades move between position inside the predetermined diameter and partially outside of it with movement of the sleeve along the drive bar.

Tool and method for soil sampling

A containment cartridge for extracting and preserving a soil sample comprises a cylindrical sampling barrel for insertion into the soil for collecting a soil sample.

Device to facilitate creating foxholes with explosives and method of making the same

A device for facilitating creation of foxholes, and method for making the same, include a tool with a bucket auger having a hollow elongated body with openings along its length. Cutting blades are formed or attached at a distal end of the body and a connection means is formed or attached at proximal end of the body. A quick release connection for attachment of a handle used or extensions used for rotating the auger in the ground is provided. The method of making the auger includes the forming of the body out of a minimum number of pieces of material and forming the blades and the body with smooth and generally seamless connections. The method facilitates economical and mass production of the augers in a light weight but strong and durable form.

A hole-making device

Arrangement for feeding at least a part of a drilling machine, drilling system and method for feeding at least a part of a drilling machine

An arrangement for feeding at least a part of a drilling machine in at least a first direction, a drilling system and a method are provided. The arrangement comprises a first end portion, a second end portion, an outer cylinder, a piston and a piston rod. The piston and the piston rod are displaceably arranged in the outer cylinder such that the piston along with the piston rod, the outer cylinder and the end portions delimit a first chamber and a second chamber for a pressure medium in the outer cylinder on a respective side of the piston. The arrangement further comprises a valve connected to the first chamber for reducing the pressure medium in the first chamber. The valve is arranged to be opened at an increased pressure in the second chamber. The time amount needed for a drilling cycle may be reduced.

Digging tool

There is described a handheld and actuated tool for making small diameter holes in the earth, comprising an elongated earth penetrating tubular member for cutting a core of earth, and a handle portion connected to the tubular member for transmitting earth penetrating and torsional forces thereto and for pulling the tubular member from the earth to remove the core of earth therein.

Portable drilling device

A portable drilling device for use in horizontal boring through a substrate beneath an impediment includes a motor mounted on an inclined stabilizer bar. The inclined stabilizer bar includes a handle for use by the operator of the drilling unit which allows the operator to guide the unit during operation. A shaft is operatively mounted on the motor and is rotatably carried by the stabilizer bar. The shaft is in turn attached to an auger which is rotatably carried within a bearing housing assembly that is attached to the inclined stabilizer bar at a predetermined angle. A skid shoe is mounted underneath the shaft-auger attachment point and is attached to both the housing and the inclined stabilizer bar, whereby, when the motor is engaged the shaft and the auger are rotated in order to bore a horizontal opening through the substrate beneath an impediment such as a sidewalk or driveway.

Patent DE3904105C2

Lightweight electric earth drill

Disclosed is a lightweight electric earth drill including a mounting plate, a drill stem and an outer shell, a motor installed on the mounting plate and configured to drive the drill stem to rotate, a rechargeable battery configured to power the motor, and a controller configured to control the motor and electrically connected to the motor and the rechargeable battery. The lightweight electric earth drill is driven by the motor and has low noise, which causes less damage to health of the workers and does not disturb the residents around the construction site. The lightweight electric earth drill is powered by rechargeable battery or mains electricity without exhaust emission. The motor is controlled by the controller and rotates forwardly and reversely, enabling the drill bit to be pulled out after drilling the earth. The lightweight electric earth drill has simpler and lighter structure, more convenient operation and less occupying space.

Hand drilling machine has housing on which rear hand grip is fitted and accommodation for earth drill driven by internal combustion engine in housing

The hand drilling machine has a housing (2), on which a rear hand grip (5) is fitted and an accommodation (9) for an earth drill (10) driven by an internal combustion engine in the housing. The earth drill is imbalanced by means of an appropriately applied mass (16). The drilling machine has a second hand grip (6), extending laterally from the housing. The second hand grip is fixed between the accommodation for the earth drill and the machine housing. It has a rotary axis (27) of the accommodation for the earth drill. The rod is releasably fixed to the drilling machine.

Drill assembly and valve

Drilling-machine.

Earth-auger.

Reamer

Digging tool

There is described a handheld and actuated tool (10) for making small diameter holes in the earth, comprising an elongated earth penetrating tubular member (5) for cutting a core of earth, and a handle portion connected to the tubular member (5) for transmitting earth penetrating and torsional forces thereto and for pulling the tubular member (5) from the earth to remove the core of earth therein.

Device for cutting a cylindrical hole in the ground

Hand drill

Hole digging apparatus and method

Cables attached to a rotating Kelly nut of a drill rig serve to maintain the vertical level of pivot points of bell-cutting blades while the blades are swung outwardly about these stationary pivot points to cut a bell for a drilled hole. The bell cuttings gravitate to the bottom of the drilled hole which is disposed a predetermined distance below the location of the bell.

Joinable rotary excavating machine's joint mechanism

本发明提供一种可连接旋挖机的接头机构，包括旋挖杆，滑块筒，右调高机构，左调高机构，伸缩机构，电机，锁条；所述旋挖杆固定连接在动力控制部的输出轴下方，且旋挖杆的下端固定连接有旋挖头；所述滑块筒滑动连接在旋挖杆的中间；所述右调高机构的上端通过铰接连接在震动架的下端侧面，且右调高机构的下端铰接在滑块筒的侧面；所述左调高机构的上端通过铰接连接在震动架的下端侧面；所述右调高机构的上方通过自带的齿轮啮合连接在旋挖杆的中间右侧；所述左调高机构的上方同样通过自带的齿轮啮合连接在旋挖杆的中间左侧；可以看出，增加了上下往复摆动的作用，旋挖机具有将旋挖头上的泥土震落的作用，自动清除泥土，大大的提高了工作效率。

Earth borer.

Arrangement for feeding at least a part of a drilling machine, drilling system and method for feeding at least a part of a drilling machine

FIELD: soil or rock drilling; mining.SUBSTANCE: group of inventions refers to a device feeding the drilling machine, to the drilling system with said device, and to a method for discharging the pressurized medium from said device. Device for feeding at least a part of a drilling machine in at least a first direction comprises a first end portion, a second end portion, outer cylinder, piston and piston rod. First part of the device is adapted to be attached to the drilling machine, the second part of the device is designed to be supported on the ground. Outer cylinder passes between the end portions. Piston and the piston rod are displaceably arranged in the outer cylinder. Piston together with the piston rod, the outer cylinder and the end portions define the boundaries of the first chamber and the second chamber for the pressurized medium in the outer cylinder on the corresponding side of the piston. Apparatus further comprises a valve connected to the first chamber to reduce the pressure medium in the first chamber. Valve is arranged to be opened at an increased pressure in the second chamber.EFFECT: technical result is to reduce the time required for the drilling cycle.13 cl, 5 dwg

Reamer

A reamer consisting of an elongate body having a first end and a second end. At least one blade is secured to the first end of the elongate body. The blade is movable between an extended position wherein the blade extends radially at an angle from the elongate body and a retracted position wherein the blade is drawn in toward the elongate body. A handle is provided at the second end of the elongate body. The elongate body is inserted through a hole with the blade in the retracted position and then manually rotated to ream a remove end of the hole with the blade in the extended position. A lever is provided adjacent the handle at the second end of the elongate body for moving the blade between the extended position and the retracted position.

Boring machine

Implement with reinforcing rib or corrugation

A reinforced implement such as a shovel is described having increased strength and resistance to deformation and/or fracture, especially in the area where the socket (11) engaging the handle (13) and blade (10) are joined. Advantageously, the blade (10), socket (11), and reinforcement (14) are formed from a single unitary piece of material having essentially uniform thickness.

Earth borer

Exploration device for hydrogeology

本发明公布了一种用于水文地质的勘探装置，包括板片、转动杆、勘探仪和钻头，所述板片的两侧皆固定安装有握把，所述板片的上表面固定安装有密封罩，所述密封罩内腔的顶端焊接有转套，所述密封罩内部的板片上表面通过轴承安装有转动轴，所述转动轴与转套之间安装有扭簧，所述转动轴的外壁套接有第一齿轮，所述转动杆顶端的外壁焊接有第二齿轮，所述第二齿轮与第一齿轮啮合，所述转动杆的外壁设置有拉绳，所述转动杆的外壁套设有转动套，所述转动杆底端的内腔设置有勘探仪。本发明结构合理，体积适中，携带方便，且操作简单，省时省力，受使用环境限制小，使用范围增加，且勘探结构准确，使用方便。

Drilling machine structure

A drilling machine structure is disclosed, characterized in which handles are arranged on the machine body for holding by the operator with both hands. Between the two handles there are assembled a power motor and a plurality of gear plates with different number of teeth to drive respectively center tip and spiral-shaped rotary blade at the lower part of machine body. The center tip and rotary blade are made of different materials in view of the drilling needs. As such, when drilling a hole, the drilling machine drills with the center tip in alignment with the hole center to guide the varying-speed cutters peripherally arranged at the very bottom of rotary blade to perform real rotary cutting and drilling, and the chips from the cutting are instantly and continuously brought to the surface through a lead hole disposed above each cutter under the driving of rotary blade, thereby achieving smooth drilling in different occasions.

Post hole digger

A post hole digger for producing a hole in the ground comprising a first handle pivotally coupled to a second handle and a first blade coupled to the first handle and a second blade coupled to the second handle. The first handle and the second handle extend along a plane defined generally by a longitudinal axis of the first handle and a longitudinal axis of the second handle when the first blade and the second blade are in the open configuration. The first blade and the second blade are generally parallel to the plane and spaced apart from the plane when provided in the open configuration.

Device for soil samples

Mining-machine

Tool for sampling soil containing volatile organic compound

The invention is an improvement in a soil sampling tool of the type having a handle and a cylindrical sampling barrel with an aperture in the upper end. An ejector extends through the aperture and is attached to a plunger for urging the soil sample out of the barrel. In the improvement, the ejector and aperture define an annular clearance between them so that when a soil sample is taken (and the plunger thereby urged toward the barrel upper end), air can exhaust from the barrel. The plunger includes a boss which extends into and seals the aperture when the plunger is at or near its uppermost position. In that way, vapors of volatile organic compounds are prevented from escaping through the aperture. The tool also includes a cap for sealing the lower end of the barrel so that such vapors cannot escape from the barrel. The improved tool is particularly useful for taking and later analyzing soil samples relating to possible leaking underground storage tanks which contain or have contained petroleum distillates, e.g., gasoline or kerosene.

Tool driving hammer consists of solid tube, supporting mass, inserted in hollow tube located in upper part of devices to be forced into ground, hollow tube closed at lower end by stop plate

The driving hammer (1) for devices (2) penetrating into the ground is constituted by a solid tube (10) supporting a mass (12). It is inserted in a hollow tube (20) located in the upper part of the devices. The hollow tube is closed at its lower end by a stop plate (21). The height of the solid tube is greater than that of the hollow tube so that the lower end of the solid tube strikes the stop plate to force the devices into the ground. Independent claims are included for device to penetrate into the ground and a method for driving the device into the ground.

Combination soil auger and soil core sampler with sample retaining capacity

A combination soil auger and soil care sampling apparatus has a cylindrical body with soil-cutting blades disposed at one end thereof and alternative cap and handle combinations attached at the opposite end for soil auger or soil core sampling use. In the soil auger mode, the body has an open cap with a bail and handle for augering into soil. In the core sampling mode, the body had a closed cap and handle combination and a removable sleeve insert within the body adapted to receive and hold a soil sample as the apparatus is rotated in the soil to be sampled. The sleeve insert is removeable for capping and retention of the soil sample.

Electric drill

The disclosure provides an electric drill comprising: a housing; a motor for driving the electric drill to work; an output assembly for outputting the power of the motor; a first brake assembly including a driving disc and a driven disc respectively arranged on the transmission shaft and the output shaft, the driving disc being meshed with the driven disc to transmit power in a non-braking state, and the driving disc and the driven disc being displaced in the axial direction to be separated from each other in a braking state to stop transmitting power; and a second brake assembly including a mass block and a micro switch connected with the motor, and in a braking state, the mass block displacing and triggering the micro switch to stop the motor.

Soil sample core extraction tool

An improved soil sample core extraction tool including a handle member having a soil probe member movable within its longitudinal socket, and having a clutch means for selectively providing for extension, retraction and prevention of movement of the soil probe member with respect to the handle member so that the soil probe member can be inserted into the soil, and retracted with a soil sample, the handle member including a selectively usable jack which assists in retracting the soil probe member from the soil by incrementally lifting the handle member while the soil probe member is engaged by the clutch means, the jack including an extension arm to provide leverage for the jack. The soil probe member is elongated in length and allows for a continuous soil sample to be received in a hollow receptacle within the interior of the soil probe member. A hammer member having a rod with a collar, and a hammer section slidable on the rod, cooperates with the soil probe member to allow a hammer to assist in forcing the soil probe into the soil. A connection assembly allows an extension tube to be removably secured to the soil probe member.

Lateral boring system

A lateral boring device for effective utility installation under sidewalks, driveways, and other obstacles. The present invention utilizes a hand-held drill, a flexible shaft, a blade attachable to the flexible shaft, and a metal sock. The operator of the present invention makes an incision into the ground with the blade in close proximity to the obstacle intended to be circumvented. The operator commences boring, and the flexible shaft begins to descend below the ground and underneath the obstacle. The low power of the drill prevents the flexible shaft from continuing to descend below the hardpan, and cause the flexible shaft to bend in a generally upwardly horizontal direction. The low power of the drill also prevents the flexible shaft or the blade from causing damage to the underside of the obstacle, and eventually the flexible shaft resurfaces on the opposite side of the obstacle. Upon resurfacing, the operator removes the blade and attaches the sock, which can be coupled to the length of wire, pipe or conduit and pulled back through the bore hole.

Device for taking samples from a material of granular or powdery composition

La présente invention concerne un dispositif de prélèvement d'échantillons dans un matériau de constitution granuleuse ou pulvérulente, comprenant une tige (12) à une extrémité de laquelle est monté un volant (10 ) destiné à faire tourner l'outil et à l'autre extrémité de laquelle se trouve une tête (13) d'enfoncement. Ce dispositif se caractérise en ce que la tête (13) est montée symétriquement sur la tige (12) et comprend des parties inférieures et latérales avant une forme profilée, la tige (12) ayant une forme déterminée pour effectuer un raclement du matériau sur toute la profondeur et la tête (13) ayant une section transversale inférieure, égale ou supérieure à la section transversale de la tige (12), dans des proportions déterminées en fonction de la nature et/ou de l'humidit é du matériau à prélever.

Hand-held type concrete drilling core machine

本发明公开了一种手持式混凝土钻孔取芯机，其特征在于，包括底座、钻孔取芯装置、升降装置、水箱、送液机构和回液机构；将底座放置在取芯位置上，通过升降装置驱动钻孔取芯装置上下移动对混泥土进行钻孔取芯，钻孔取芯装置向下钻孔时通过下压弹簧带动底板向下移动使密封盘与混泥土紧密贴合，防止水流外溢，冷却水通过回液机构将钻孔取芯装置流出的冷却水流回水箱，解决浪费水资源的问题，在芯管内设有吸盘，取芯时，通过吸盘吸附在芯料上，将芯料带出钻孔，在通过水泵喷水将吸盘与芯料分开，防止芯料卡在钻孔中，同时在钻孔取芯装置向上移动时，使得密封盘与混泥土分离，方便再次进行钻孔取芯工作，简化取芯料的过程，增加了取芯效率。

Device for inserting a standing pipe assembly into the soil

The device comprises a drill head (2) which is formed as an extrusion drill attached at a lower end of a tube arrangement (1), which has a lower pointed cone running out in a front tip. A tapering upper truncated cone is provided with a circumferential spiral extending on its height. The lower end of the spiral, is formed as a cutting edge which extends radially in a circumferential direction.

Wafer container

(57)【要約】 【課題】安価で粒子発生が少なく、またウェハーを安定 保持できるウェハー容器の提供。 【解決手段】ウェハー容器は水平の上側フレーム部材 と、この上側フレーム部材に平行な下側フレーム部材 と、下側フレーム部材及び上側フレーム部材の間を延び ていてこれらと一体化されている一対の対向する垂直の サイドフレーム部材とを有し、これらの部材によりウェ ハーを受容するための開口した前部を形成している、ほ ぼ四角形の垂直のフレームを有する。また、容器は上側 フレーム部材と一体化され、かつこれから後方に延びる ほぼ水平な上部と、下側フレーム部材と一体化され、か つこれから後方に延びるほぼ水平な下側ベース部と、透 明なプラスチックシェルを有する付加成形部分とを有 し、付加成形部分は上部に連結され、かつ前記下側ベー ス部に連結されてこれらの間を延びるＵ字形部分を有す る。

Cutter

Electric drill device for preventing slurry loss and performing bubble lubrication during measurement while drilling

本发明公开了一种随钻测量防泥浆流失气泡润滑的电钻装置，其结构包括：辅助支撑手把、主体、控制手把、衔接抓取头、钻孔装置，辅助支撑手把的右端嵌套于主体的左侧，主体的右侧与控制手把的左端通过导线电连接，产生的有益效果是在喷浆器的作用下，能够在泥浆流失时，及时弥补，避免泥浆过少而影响钻孔，在紧实器的作用下，能够在钻孔的同时压实孔的内壁，避免出现缝隙而导致泥浆流失，同时能够使泥浆内充满气泡，降低密度，提高润滑性，有利于提高钻孔的转速和钻进的效率，在疏通脱离器的作用下，能够将碎砂石粉碎，避免碎砂石击打钻头而导致卡钻，提高钻孔的连续性。

Tool blades with multiple cutting edges

A tool blade for use with a handle includes a pan having a top surface and bottom surface opposite the top surface, the pan having a top edge and a cutting edge opposite the top edge and having a pair of opposed side edges extending between the top edge and the cutting edge. The top edge of the pan includes a handle sleeve defining a channel configured to receive an end of the handle. The bottom edge is integrally connected to the pan and is sharpened so as to penetrate a ground surface. A plurality of grating teeth is formed on the pan, each grating tooth having a scoop projecting outwardly from the pan and a cutout. A cutout traverses through the pan and defines an opening connecting the top and bottom surfaces. A respective scoop includes a portion partially covering the cutout and having an arcuate cutting edge.

Single handled post hole digger

The present invention is a light-weight, single handle post hole digger that can include an outer handle and an inner shaft. The post hole digger can have two blade that are used to cut into the ground and to loosen soil when in an open position and then used to capture and remove soil when in a closed position. A first blade can be attached to the inner shaft by an adjustable pin or bolt and a second movable blade can be connected to the outer handle. A link bar can be connected to the outer handle at a sleeve pivot connection and connected to said movable blade at a blade pivot connection so that when the outer handle is rotated, the blades move between an open position and a closed position. The link bar can be disposed generally orthogonal to an axis defined along the length of the outer handle.

TOOL HAMMER FOR TOOLS

Post-hole augeb

Blasthole digging machine

Earth auger reversing o-ring

An o-ring is an elongated metal ring that is firmly attached to the upper portion of a typical earth auger enabling such auger to be easily dislodged when stuck.