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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 1275. Отображено 100.
06-09-2012 дата публикации

Proportional pilot-controlled pneumatic control system for pneumatically powered hand-held tools

Номер: US20120222762A1
Автор: Donald J. Glaser, Kevin M. James, Lon C. Tidwell
Принадлежит: Glendo Corp

A control system for use in conjunction with a primary power system and operable to control a pneumatically powered hand-held tool broadly comprises an air delivery assembly operable to communicate with a pressurized air source; a control assembly including an exhaust line from the primary power system and to the control assembly, a spool valve in fluid communication with the supply line and the exhaust line, and a control line in fluid communication with the spool valve and the hand-held tool; a tool assembly comprising the hand-held tool for performing delicate hand working operations; and a housing for at least partial storage of the air delivery assembly and the control assembly. The primary power system and the control system operate in conjunction with each other to both power and precisely control a pneumatically powered hand-held tool.

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Номер записи: 1
16-05-2013 дата публикации

AIR HAMMER TOOL, AND METHOD OF ADJUSTING IMPACT FORCE OF THE AIR HAMMER TOOL

Номер: US20130118766A1
Автор: WATANABE Yukio
Принадлежит: APUREN CO., LTD.

[Problem to be Solved] To provide an air hammer tool which largely reduces transmission of vibration to a worker, has a simple and light-weight structure, can he manufactured at a low cost, and can be easily maintained. 1. An air hammer tool , comprising:a cover body and a tip tool which is extended forward from the cover body; andan impact force obtained by a gas, which is pressured and injected into said cover body, being applied to an object to be impacted through said tip tool,wherein said cover body has an inner space portion which is formed along the longitudinal direction, a gas pressure-injection portion which is formed in the peripheral wall of the cover body to a gas pressured and injected, forward into the inner space portion, the inner space portion has therein a longitudinally slidable sliding body and an elastic body which is interposed between the outer peripheral surface of the sliding body and the inner peripheral surface of the cover body,said sliding body has a. sliding body main body and a cylinder portion which has a cylindrical shape and is disposed at a front end portion of the sliding body main body to protrude forward from said cover body,a gas introduction portion for guiding the gas pressured and injected, into said cover body into the cylinder portion and a gas introduction portion is formed in a peripheral wall of the cylinder portion, a hammer is longitudinally slidably loaded in the cylinder portion, a rear end portion of said tip tool is fixed to a front-end opening portion of the cylinder portion to be impactable with said hammer,when the gas is pressured and injected into said cover body through said gas pressure-injection portion, said sliding body is moved forward in the cover body by the pressure of the gas while elastically deforming the elastic body, and the hammer is longitudinally reciprocated within the cylinder portion by the gas introduced into said cylinder portion through said gas introduction portion ,and said hammer ...

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Номер записи: 2
27-06-2013 дата публикации

IMPACT BODY AND TRANSMISSION MODULE HAVING THE SAME

Номер: US20130161045A1
Автор: TING Chih-Ming
Принадлежит: HYPHONE MACHINE INDUSTRY CO., LTD.

An impact body adapted for being mounted to a transmission module is provided. The transmission module includes a rotation portion formed with a receiving space and an axle disposed in the receiving space. The impact body is pivotally mounted to the rotation portion and received in the receiving space. A protrusion integrally extends outwardly from the other side of the impact body to allow the impact body swings around the protrusion. Whereby, the transmission module is easy to produce and assemble, has a lighter weight or greater rotary output power, and can improve transmission efficiency and lifetime, thus resulting in great inventive effects for use. 1. An impact body , adapted for being mounted to a transmission module for an impact type pneumatic tool , the transmission module having a rotation portion formed with a receiving space and an axle , the axle being disposed in the receiving space;wherein the impact body includes a transmission ring and a protrusion, the transmission ring has an inner circumferential surface and an outer circumferential surface, the inner circumferential surface defines a through hole which defines an axial direction, the protrusion extends outwardly from the outer circumferential surface and is integrally formed as a part of the transmission ring, and the protrusion is parallel to the axial direction;wherein the impact body is adapted for being mounted to the rotation portion, received in the receiving space and swings around the protrusion;wherein the through hole is noncircular and adapted for receiving the axle, and the impact body intermittently impacts the axle when rotating.2. The impact body of claim 1 , wherein the outer circumferential surface is formed with a recess claim 1 , and the protrusion and the recess are oppositely formed at two sides of the impact body.3. The impact body of claim 1 , wherein the outer circumferential surface is formed with a projection claim 1 , and the protrusion and the projection are ...

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Номер записи: 3
01-08-2013 дата публикации

HAND POWER TOOL DEVICE

Номер: US20130192861A1
Автор: Braun Willy
Принадлежит: ROBERT BOSCH GMBH

A hand power tool device includes a hammer tube and a B-impact damping system. The B-impact damping system includes at least one damping mechanism configured to damp recoil energy. The damping mechanism is disposed at least partially radially outside of the hammer tube in at least one operating state. 1. A hand power tool device comprising:a hammer tube, anda B-impact damping system, the B-impact damping system including at least one damping mechanism that is configured to damp a recoil energy without a limit stop,wherein, in at least one operating state, the damping mechanism is disposed at least partially radially outside of the hammer tube.2. The hand power tool device as claimed in claim 1 , wherein the damping mechanism at least partially surrounds the hammer tube.3. The hand power tool device as claimed in claim 1 , wherein a no-load control mechanism claim 1 , in at least one operating state claim 1 , transfers at least a part of the recoil energy.4. The hand power tool device as claimed in claim 3 , wherein claim 3 , in at least one operating state claim 3 , the no-load control mechanism supports a part of the recoil energy on one or more of the hammer tube and a hand power tool housing.5. The hand power tool device as claimed in claim 1 , wherein the B-impact damping system has at least two damping mechanisms connected in series.6. The hand power tool device as claimed in claim 5 , wherein the B-impact damping system has at least one support element disposed between the damping mechanisms.7. The hand power tool device as claimed in claim 5 , wherein the B-impact damping system has at least one bypass mechanism configured to bypass at least one of the damping mechanisms.8. The hand power tool device as claimed in claim 5 , wherein the damping mechanisms have differing damping properties.9. The hand power tool device as claimed in claim 1 , wherein the hammer tube is mounted so as to be movable relative to a hand power tool housing.10. A hand power tool claim ...

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Номер записи: 4
08-08-2013 дата публикации

ROTARY HAMMER

Номер: US20130199810A1
Автор: Wyler Andrew R.
Принадлежит: MILWAUKEE ELECTRIC TOOL CORPORATION

A rotary power tool includes a housing, a tool element defining a working axis, and a handle coupled to the housing. The handle is movable along a first axis parallel with the working axis between a retracted position and an extended position. The handle includes an upper portion and a lower portion. The rotary power tool also includes an upper joint coupling the upper portion of the handle to the housing and a lower joint coupling the lower portion of the handle to the housing. Each of the upper and lower joints includes a rod extending into the handle and a biasing member disposed between the handle and the housing. The biasing member is operable to bias the handle toward the extended position. Each of the upper and lower joints is operable to attenuate vibration transmitted along the first axis and along a second axis orthogonal to the first axis. 1. A rotary power tool comprising:a housing;a tool element defining a working axis;a handle coupled to the housing and movable along a first axis parallel with the working axis between a retracted position and an extended position relative to the housing, the handle including an upper portion and a lower portion;an upper joint coupling the upper portion of the handle to the housing; anda lower joint coupling the lower portion of the handle to the housing, each of the upper and lower joints including a rod extending into the handle and a biasing member disposed between the handle and the housing, the biasing member operable to bias the handle toward the extended position,wherein each of the upper and lower joints is operable to attenuate vibration transmitted along the first axis and along a second axis orthogonal to the first axis.2. The rotary power tool of claim 1 , wherein each of the upper and lower joints further includes a first bracket fixed to one of the housing and the rod and a second bracket coupled to the other of the housing and the rod.3. The rotary power tool of claim 2 , wherein at least one of the first ...

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Номер записи: 5
08-08-2013 дата публикации

handheld machine tool having a mechanical striking mechanism

Номер: US20130199814A1
Автор: Lee Siew Yuen, Leong Chi Hoe, Loh Chun Chee, Low Chun How, Wan Mohsein, Yew Chuan Cheong
Принадлежит:

In the case of a handheld machine tool having a mechanical striking mechanism, which includes a striking body provided with at least one actuating cam and an output shaft provided with at least one output cam, the actuating cam being configured for percussively driving the output cam during percussive operation of the mechanical striking mechanism, a damping element, which has an abutment element acted upon by a spring element, is provided at least on one actuating cam and/or on one output cam. 110-. (canceled)11. A handheld machine tool , comprising:a mechanical striking mechanism, which includes a striking body having at least one actuating cam and an output shaft having at least one output cam, the actuating cam being configured for percussively driving the output cam during percussive operation of the mechanical striking mechanism; anda damping element, which has an abutment element acted upon by a spring element, provided at least one of on one of the actuating cams and one of the output cams.12. The handheld machine tool of claim 11 , wherein the spring element is a compression spring.13. The handheld machine tool of claim 11 , wherein the abutment element is spherical.14. The handheld machine tool of claim 11 , wherein the abutment element is a steel ball.15. The handheld machine tool of claim 11 , wherein a recess claim 11 , within which the spring element and the abutment element are configured claim 11 , is formed on at least one of the actuating cam and the output cam that are provided with the damping element.16. The handheld machine tool of claim 15 , wherein the recess is formed as a type of blind hole whose opening is provided with an annular collar claim 15 , the spring element and the abutment element being configured in the blind hole in a way that allows the spring element to act upon the abutment element against the annular collar.17. The handheld machine tool of claim 16 , wherein the annular collar is configured for blocking the abutment ...

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Номер записи: 6
29-08-2013 дата публикации

HANDHELD POWER TOOL

Номер: US20130220658A1
Автор: Cehajic Damir, DIEING Christoph, ONTL Rainer, Rehekampff Christian
Принадлежит: Hilti Aktiengesellschaft

A handheld power tool is disclosed. The tool has a housing, a hammer mechanism and a torque coupling. The hammer mechanism includes a beater which is movably guided along the working axis in the guide tube. The guide tube is mounted in a suspension attached to the housing so that it is movable along the working axis. The torque coupling is mounted on the guide tube and is supported on the suspension in the impact direction. The guide tube is supported on the torque coupling in the impact direction. The guide tube may be shifted with respect to the housing in the impact direction such that the torque coupling is shifted relative to the housing through the guide tube in a positively guided manner. 1. A handheld power tool , comprising:a housing,a hammer mechanism, wherein the hammer mechanism includes a beater guided movably in a guide tube along a working axis;a suspension which is attached to the housing, wherein the guide tube is mounted in the suspension such that the guide tube is movable along the working axis; anda torque coupling which is mounted on the guide tube and is supported on the suspension in an impact direction, and wherein the guide tube is supported on the torque coupling in the impact direction.2. The handheld power tool according to claim 1 , wherein the torque coupling has a return spring claim 1 , wherein a force is exertable by the return spring on the suspension in the impact direction and wherein a force is exertable by the return spring on the guide tube in a direction opposite the impact direction.3. The handheld power tool according to claim 1 , wherein the torque coupling has a first coupling disk claim 1 , a second coupling disk claim 1 , and a return spring claim 1 , wherein the guide tube is supported on the first or the second coupling disk in the impact direction claim 1 , and wherein the return spring is disposed between the suspension in the impact direction and the second coupling disk in a direction opposite the impact direction ...

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Номер записи: 7
24-10-2013 дата публикации

MACHINE TOOL

Номер: US20130277077A1
Автор: HARTMANN Markus, Pfeiffer Eduard
Принадлежит:

A hand-held machine tool includes a tool accept for mounting a chiseling tool on an operating axis. A pneumatic hammer mechanism includes a hammer mobile on an operating axis, an exciter, and a pneumatic chamber sealed by an exciter and the hammer, which couples the movement of the exciter to the hammer. The exciter is driven by a motor and moves back and forth between a frontal dead point distant from the tool and a dead point near the tool. A damper device includes a supercharger and a controlled outlet valve. The controlled outlet valve allows air to flow from the supercharger into the pneumatic chamber when the exciter is in the proximity of the dead point distant from the tool. 1. A hand-held machine tool with a tool accept for mounting a chiseling tool on an operating axis , comprisesa pneumatic hammer mechanism comprising a mobile hammer on said operating axis, with an exciter driven back and forth by a motor between a frontal dead point, distant from the tool, and a dead point near the tool, and a pneumatic chamber sealed from the exciter and the hammer to couple the movement of the exciter to the hammer; anda damping device comprising a supercharger and a controlled outlet valve, with the controlled outlet valve allowing air to flow from the supercharger into the pneumatic chamber when the exciter is in the proximity of the dead point distant from the tool.2. A hand-held machine tool according to claim 1 , wherein a distance of the exciter from its dead point distant from the tool is lower than 5% of the stroke of the exciter when the controlled outlet valve allows air to flow from the supercharger into the pneumatic chamber.3. A hand-held machine tool according to claim 1 , wherein the supercharger includes a pumping device.4. A hand-held machine tool according to claim 3 , wherein the exciter forms a pumping piston of the pumping device.5. A hand-held machine tool according to claim 4 , wherein an area of the exciter facing opposite the direction of ...

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Номер записи: 8
14-11-2013 дата публикации

DEMOLITION HAMMER ARRANGEMENT FOR A REMOTE-CONTROLLED WORKING MACHINE EQUIPPED WITH A MANOEUVRABLE ARM

Номер: US20130300181A1
Автор: Bystedt Gunnar
Принадлежит: BROKK AKTIEBOLAG

The invention concerns a demolition arrangement for a remote-controlled working machine () equipped with a manoeuvrable arm (), which machine, electrically powered and able to be driven on tracks (), is principally intended for destruction and demolition work through the demolition processing with an impact tool () that operates through a hydraulically powered hammer () and where an operator walking next to the machine controls its various movements with a remote-control unit (), which machine has a chassis () with an upper part () that is mounted in bearings on a lower part () in a manner that allows rotation for the rotation of the upper part in a horizontal plane around a vertical axis (), whereby the manoeuvrable arm is supported at the upper part and including a series of arm parts () mutually joined to each other and that can be manoeuvred in a vertical plane by associated hydraulic cylinders (), a link system () arranged at the free end of the arm that can be adjusted by means of a hydraulic cylinder () and designed as a combination of a coupling arrangement () for the attachment of a tool and a tilt or demolition arrangement () for the controlled oscillation around the centre of an axis () at the free end of the manoeuvrable arm of an impact tool inserted into the hammer. In order to make the work of demolition efficient, a rotary joint () is arranged at one of the arm sections () that are a component of the manoeuvrable arm (), which rotary joint allows, through the influence of a rotator () a forward arm subsection () of the arm section, on which arm subsection the link system () is located, to place the end of the impact tool () that is located farthest forward against a working point in space though the forward arm subsection () being rotated around the longitudinal axis (A) of the arm section (). 119171730503245678101112131415. A demolition arrangement for a remote-controlled working machine () equipped with a manoeuvrable arm () , which machine ...

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Номер записи: 9
12-12-2013 дата публикации

DEVICE AND METHOD FOR ROCK AND - CONCRETE MACHINING

Номер: US20130327551A1
Автор: Donsé Lennart
Принадлежит:

The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing () with a cylinder bore, a piston () mounted such that it moves within this bore arranged to carry out when in operation repetitive reciprocating motion relative to the machine housing and in this way to deliver impact directly or indirectly on a tool connectable to the equipment for machining at least one of rock and concrete, and where the piston includes a driving part () that separates a first drive chamber () and a second drive chamber (), with an effective volume that is greater than that of the first drive chamber. The impact mechanism comprises further a starting means arranged such that it creates for a short duration, during an initial pressurisation of the impact mechanism, a connection between the second drive chamber and the first drive chamber, where the said connection can remain during one complete stroke cycle, in order in this way to set the piston into self-oscillation and avoid the piston remaining stationary at an equilibrium position. Furthermore, the invention concerns a rock drill with such an impact mechanism, and a rock drill rig comprising such a rock drill, and further a hydraulic release valve for the start of valveless hydraulic impact mechanisms. The invention concerns in addition to this a starting method for a hydraulic valveless impact mechanism. 1. A hydraulic , valveless impact mechanism for use in equipment for machining at least one of rock and concrete comprising a machine housing with a cylinder bore , a movable piston mounted in this bore and arranged to carry out repetitively reciprocating motion during operation relative to the machine housing , and in this way to deliver impacts directly or indirectly against a tool connectable to the equipment for machining at least one of rock and concrete , and where the piston includes a driving part that separates a ...

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Номер записи: 10
13-02-2014 дата публикации

STRIKER MEMBER, AND A DRILLING MACHINE COMPRISING A STRIKER MEMBER

Номер: US20140041888A1
Автор: Östling Thomas, Saf Fredrik
Принадлежит:

A circular cylindrical striker member for a drilling machine adapted to transfer kinetic energy to an impulse receiving member The striker member has a diameter d, and includes a side surface and an impulse surface (). The striker member is adapted to transfer the kinetic energy to the impulse receiving member by a ring shaped active surface of the impulse surface, wherein the ring shaped active surface is concentric with regard to the cross section of the striker member, has a diameter dwhere d Подробнее

Номер записи: 11
07-01-2021 дата публикации

ROTARY-PERCUSSIVE HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW-PRESSURE ACCUMULATOR

Номер: US20210001462A1
Автор: Comarmond Jean-Sylvain
Принадлежит:

The rotary percussive hydraulic perforator comprises a body; a fitting; a striking piston configured to strike the fitting; a stop piston including a front face facing the fitting and a rear face situated opposite to a rear wall of a cavity receiving the piston stop; and a main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit. The body and the stop piston delimit a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, and a second control chamber configured to bias the stop piston forwards and permanently connected to a low pressure accumulator connected to the low pressure fluid return conduit. 1. A rotary percussive hydraulic perforator comprising:a body,a fitting intended to be coupled to at least one drilling bar equipped with a tool,a striking piston slidably mounted inside the body along a striking axis and configured to strike the fitting,a stop piston which is slidably mounted in a cavity of the body along an axis of displacement substantially parallel to the striking axis, the stop piston including a front face facing the fitting and intended to position the fitting in a predetermined equilibrium position with respect to the striking piston, and a rear face opposite to the face front and situated opposite to a rear wall of the cavity, anda main hydraulic supply circuit configured to control an alternating sliding of the striking piston along the striking axis and to control a sliding of the stop piston along the displacement axis, the main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit,the body and the stop piston delimiting at least partially a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, the rotary percussive hydraulic perforator further comprising a connecting ...

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Номер записи: 12
03-02-2022 дата публикации

IMPACT MECHANISM WITH MULTI-MATERIAL STRIKER

Номер: US20220032437A1
Автор: Didier Will, McLachlan Kevin A., Young Tyler
Принадлежит:

An impact mechanism for use in a power tool having a motor and adapted to impart axial impacts to a tool bit. The impact mechanism includes a piston configured to reciprocate in response to receiving torque from the motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit. The striker includes a body portion formed of a first material and an insert portion within the body portion. The insert portion is formed of a second material that is more dense than the first material. 1. An impact mechanism for use in a power tool having a motor and adapted to impart axial impacts to a tool bit , the impact mechanism comprising:a piston configured to reciprocate in response to receiving torque from the motor;a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston; andan anvil that is impacted by the striker when the striker reciprocates towards the tool bit, the anvil imparting axial impacts to the tool bit,wherein the striker includes a body portion formed of a first material and an insert portion within the body portion, the insert portion being formed of a second material that is more dense than the first material.2. The impact mechanism of claim 1 , wherein the insert portion is a cylindrical slug.3. The impact mechanism of claim 1 , wherein the body portion includes a cavity into which the insert portion is received.4. The impact mechanism of claim 3 , wherein the insert portion is a cylindrical slug claim 3 , and wherein the cavity has a cylindrical shape to receive the cylindrical slug.5. The impact mechanism of claim 1 , wherein the first material is steel claim 1 , and wherein the second material is tungsten carbide.6. The impact mechanism of claim 1 , wherein the striker includes a nose that impacts the anvil.7. The impact ...

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Номер записи: 13
19-01-2017 дата публикации

Seal placement device

Номер: US20170014960A1
Автор: Gregory Menissez, Remi Durieu
Принадлежит: NORETUD INDUSTRIES

A device ( 100 ) for placing a seal (J) on a mounting (S) including a vibration generator ( 10 ), that includes: a main body ( 11 ); a distal portion ( 12 ), movable relative to the main body, onto which a cap ( 13 ) having a contact surface ( 13 a ) for engaging with the seal is attached; and drive elements ( 14 ), configured to drive the distal portion in reciprocal translation relative to the main body, such as to place the seal on the mounting when the contact surface ( 13 a ) of the cap ( 13 ) engages with the seal (J) that is placed on the mounting (S). The device includes: a grasping handle ( 20 ), connected to the main body; and resilient connection elements ( 30 a, 30 b ) that are located between the main body and the grasping handle and are configured such as to limit the propagation, in the grasping handle, of the vibrations generated by the reciprocal translation movement.

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Номер записи: 14
19-01-2017 дата публикации

CHISELING HANDHELD POWER TOOL

Номер: US20170014983A1
Автор: Hauptmann Makus, HAUPTMANN Udo, WIEDNER Aaron
Принадлежит: Hitlti Aktiengesellschaft

The striking pin () is arranged in a bearing (). The striking pin () has a circumferential surface () and a stop surface () facing in the striking direction (). The bearing () has a sleeve () arranged coaxially to the working axis () as well as a catcher (). The circumferential surface () of the striking pin () is installed so as to slide on the inside of the sleeve (). The catcher () is arranged in the striking direction () of the stop surface () of the striking pin () in order to limit the movement of the striking pin () in the striking direction (). A connecting link () is provided for purposes of causing the striking pin () to execute a rotation relative to the bearing () when the striking pin () moves in the striking direction (). The connecting link () has a flank () on the striking pin () and another flank () on the bearing (), whereby the two flanks () that rest against each other during the movement rise in the striking direction () in the same circumferential direction (). 110-. (canceled)11. A chiseling handheld power tool comprising:a tool socket to hold a chiseling tool coaxially to a working axis;a motor;a striking mechanism including an exciter forcibly excited by the motor periodically, a striker installed and movable coaxially to the working axis, a pneumatic chamber configured between the exciter and the striker so as to couple a movement of the striker to the movement of the exciter, and a striking pin behind the striker arranged in the striking direction for purposes of indirectly transmitting an impact from the striker to the chiseling tool held in the tool socket, the striking pin having a circumferential surface and an end face facing in the striking direction;a bearing having a sleeve arranged coaxially to the working axis as well as a catcher, the circumferential surface of the striking pin being slidable on the sleeve, and the catcher being arranged in the striking direction of the end face of the striking pin in order to limit the movement ...

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Номер записи: 15
18-01-2018 дата публикации

IMPACT TOOL

Номер: US20180015603A1
Автор: Abe Satoshi, KANBE Kuniaki
Принадлежит:

An impact tool in which stop control of a motor as power source of a tool bit is changed in accordance with a predetermined condition is provided. A hammer drill having two or more operating modes including a hammer mode in which an impact force is transmitted to a tool bit whereas a rotational force s not transmitted thereto and a hammer drill mode in which at least the rotational force is transmitted to the tool bit includes a motor as a power source and a control part that performs stop control to stop the motor, and the control part performs any one of two or more of the stop controls in accordance with a predetermined condition. 1. An impact tool having two or more operating modes including a first operating mode in which an impact force is transmitted to a tool bit whereas a rotational force is not transmitted to the tool bit and a second operating mode in which at least the rotational force is transmitted to the tool bit , the impact tool comprising:a motor as a power source; anda control part that performs stop control to stop the motor,wherein the control part performs any one of two or more of the stop controls in accordance with a predetermined condition.2. The impact tool according to claim 1 ,wherein the stop controls include stop control having a large braking force to the motor, and stop control having a small braking force to the motor.3. The impact tool according to claim 2 ,wherein the stop control having the large braking force is an active-stop control including a braking process to actively stop rotation of the motor, and the stop control having the small braking force is a natural-stop control including no braking process.4. The impact tool according to claim 2 ,wherein the control part performs the stop control having the small braking force when the first operating mode is selected, arid performs the stop control having the large braking force when the second operating mode is selected.5. The impact tool according to claim 2 ,wherein the ...

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Номер записи: 16
17-04-2014 дата публикации

Front Head Nut Pocket Configuration for Hydraulic Hammer

Номер: US20140102740A1
Автор: Rakesh Jagdale
Принадлежит: Caterpillar Inc

A hydraulic hammer may include a power cell adapted to reciprocally drive a piston along an axis. The piston may, in turn, drive a hammer tool having a first end juxtaposed against the piston for accommodating cyclic impacts by the piston. While the first end of the hammer tool may be contained within a housing, the other end may extend from the housing for impacting rock, for example. The power cell and housing are axially secured together by a plurality of tie rods and nuts secured to ends of the tie rods, and the housing may include exterior pockets for accommodating the nuts. Each nut may have a circular exterior surface, and each nut pocket may have a generally elliptical interior surface, such that the exterior surface of each nut may be configured to engage at least two spaced apart areas of a corresponding interior surface of each nut pocket.

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Номер записи: 17
25-01-2018 дата публикации

IMPACT TOOL

Номер: US20180021931A1
Автор: Abe Satoshi, Hashimoto Hideyuki, Ookubo Takahiro
Принадлежит:

An impact tool that realizes an ON-lock function with a simple mechanism and makes it possible to switch between activation and deactivation of the ON-lock function with few operation processes is provided. A hammer drill having at least two operating modes including a hammer mode in which an impact force is transmitted to a tool bit whereas a rotational force is not transmitted thereto includes: a motor as a power source; a trigger lever and an ON-lock button that are operated by an operator; a sensor that detects whether a selected operating mode is the hammer mode or not; and a controller that controls the motor based on an operation of the trigger lever and the ON-lock button. When the ON-lock button is operated while the hammer mode is selected, the controller performs ON-lock control to maintain the motor in the operating state even when the trigger lever is not operated. 1. An impact tool having at least two operating modes including a first operating mode in which an impact force is transmitted to a tool bit whereas a rotational force is not transmitted to the tool bit , the impact tool comprising:a motor as a power source;a first operation part and a second operation part operated by an operator;a mode detection part detecting whether a selected operating mode is the first operating mode or not; anda control part controlling the motor based on an operation of the first operation part and the second operation part,wherein, when the second operation part is operated while the first operating ode is selected, the control part performs ON-lock control to maintain the motor in an operating state even when the first operation part is not operated.2. The impact tool according to claim 1 ,wherein the control part stops the motor when the first operation part is operated while the ON-lock control is performed.3. The impact tool according to claim 1 ,wherein the control part stops the motor when the first operation part is operated while the ON-lock control is ...

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Номер записи: 18
05-02-2015 дата публикации

PERCUSSION DEVICE

Номер: US20150034351A1
Автор: Lundgren Anders
Принадлежит:

A percussion device including a shank adaptor, a machine housing that contains a percussion piston that is arranged to carry out a reciprocating movement caused by the pressure from a hydraulic fluid and to strike the shank adaptor when the percussion device is in use. An elastic element is arranged radially outwards from the percussion piston to dampen the recoil from the shank adaptor. The machine housing has an inner surface that faces the percussion piston. The elastic element has an inner surface that faces the percussion piston and an outer surface that faces the inner surface of the machine housing. At least a part of the outer surface of the elastic element directly faces the inner surface of the machine housing. 1. A percussion device , comprising:a shank adaptor,a percussion piston that is arranged to carry out a reciprocating movement caused by pressure from a hydraulic fluid and to strike said shank adaptor when the percussion device is in use,a machine housing containing said percussion piston,an elastic element that is arranged radially outwards from said percussion piston to dampen a recoil from said shank adaptor, wherein said machine housing has an inner surface that faces said percussion piston, and wherein said elastic element has an inner surface that faces said percussion piston and an outer surface that faces said inner surface of said machine housing, whereby at least a part of said outer surface of said elastic element directly faces said inner surface of said machine housing, and whereby the inner surface of the elastic element directly faces the percussion piston when the percussion device is in use.2. (canceled)31. The percussion device according to claim , further comprising:a transmission element, whereby said shank adaptor is arranged to strike said transmission element during its recoil recoil of the shank adapter.4. The percussion device according to claim 1 , further comprising:a stop plate that is arranged between said transmission ...

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Номер записи: 19
24-02-2022 дата публикации

Hydraulic Hammering Device

Номер: US20220055196A1
Автор: Kaneko Tsutomu, KOBAYASHI Isao, MURAKAMI Susumu, Nagano Shinsuke, Shioda Atsushi
Принадлежит:

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of pressurized oil from the idle strike prevention ...

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Номер записи: 20
07-02-2019 дата публикации

Air File

Номер: US20190039200A1
Автор: Liaw Jian-Shiou
Принадлежит:

An air file has a body, a fastening member, and a driving assembly. The body has a handle and a front cover connected to the handle. The fastening member is swingably assembled to the front cover and has a pivoting end and a connecting end. The pivoting end of the fastening member is inserted inside the front cover. The connecting end of the fastening member extends out of the front cover. The driving assembly is mounted inside the body and has an eccentric shaft and a swinging unit. The eccentric shaft is connected to a driving device and has an eccentric hole facing to the front cover. The swinging unit has a pivoting portion and a ball joint. The pivoting portion is pivotally connected to the pivoting end of the fastening member. The ball joint is engaged in the eccentric hole of the eccentric shaft. 1. An air file comprising: a handle; and', 'a front cover connected to the handle;, 'a body having'} a pivoting end inserted inside the front cover; and', 'a connecting end extending out of the front cover;, 'a fastening member swingably assembled to the front cover and having'} an eccentric shaft connected to a driving device and having an eccentric hole facing to the front cover; and', a pivoting portion pivotally connected to the pivoting end of the fastening member; and', 'a ball joint engaged in the eccentric hole., 'a swinging unit having'}], 'a driving assembly mounted inside the body and having'}2. The air file as claimed in further having a pivoting assembly claim 1 , whereinthe pivoting assembly has a pivoting board fixed to the front cover; andthe fastening member is pivotally connected to the pivoting board and is swingably assembled to the front cover by the pivoting board.3. The air file as claimed in claim 2 , wherein the pivoting assembly hasa pivoting bolt passing through the pivoting board and the fastening member; anda nut screwed with the pivoting bolt.4. The air file as claimed in claim 3 , whereinthe driving device is a pneumatic mechanism with ...

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Номер записи: 21
18-02-2016 дата публикации

Automatic Lubrication System with Detune

Номер: US20160046009A1
Автор: Cody Moore
Принадлежит: Caterpillar Inc

Lubrication system includes a drive fluid valve member and a detune valve member. The drive fluid valve member is movable from a first to a second position in response to drive fluid pressure to reduce the volume of a variable volume lubricant charge chamber. The detune valve member is movable from a first to a second position in response to lubricant pressure within the lubricant charge chamber, and is adapted to permit fluid communication between inlet and bypass fluid passages in its the first position and to disengage the fluid connection in its second position.

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Номер записи: 22
03-03-2022 дата публикации

Portable power tool

Номер: US20220063078A1
Автор: BRITZ Rory, HARTMANN Markus, ONTL Rainer
Принадлежит:

The portable power chiseling tool has a tool holder, an electric motor, a striking mechanism and an idle strike catcher. The tool holder can receive a tool and retain it movably on a working axis. The striking mechanism includes an exciter piston, a striker, an anvil and a guide for the anvil. The exciter piston is coupled to the electric motor. The guide guides the anvil on the working axis. The idle strike catcher for the anvil has a conical inner surface facing the anvil. The anvil has an associated end face facing in the striking direction. The end face rests against the conical inner surface when the anvil is in its forwardmost position in the striking direction. The end face of the anvil has a first segment and a second segment in the circumferential direction. The second segment is offset in the striking direction relative to the first segment.

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Номер записи: 23
25-02-2016 дата публикации

IMPACT TOOL

Номер: US20160052119A1
Автор: Abe Satoshi, Ookubo Takahiro, Yamada Hideki
Принадлежит: HITACHI KOKI CO., LTD.

An impact tool includes a casing () supporting a tip tool (), a piston () provided in the casing (), an electric motor () provided in the casing (), a motion converting mechanism () provided in the casing (), and a vibration reducing mechanism () provided in the casing (). The vibration reducing mechanism () has a supporting member, which is swingable with using a fixing position (J) as a supporting point and a weight () attached to a free end side of the supporting member. In a plane including a center line (C), the gravity center (H) of the weight () and the gravity center (G) of the casing () are disposed at mutually different locations, and the fixing position (J) is disposed on the side of the gravity center (G) relative to the center line (C). 133-. (canceled)34. An impact tool comprising:a casing that supports a tip tool;a moving member that is reciprocatably provided in the casing and generates impact force to be transmitted to the tip tool;an electric motor that is provided in the casing and has an output shaft;a motion converting mechanism that is provided in the casing, converts rotary motion of the output shaft to reciprocating motion, and transmits the reciprocating motion to the moving member; anda vibration reducing mechanism that is movably provided in the casing and reduces a vibration of the casing,wherein the vibration reducing mechanism includes:a supporting member that is provided to be swingable in a direction of a center line of reciprocation of the moving member with using a fixing position provided on the casing as a supporting point; anda weight that is attached to a location of the supporting member close to a free end relative to the fixing position, in a plane including the center line, a gravity center of the weight and the fixing position are disposed at mutually different locations in a radial direction of the center line, in the plane including the center line, the fixing position is disposed on a side of a gravity center of the ...

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Номер записи: 24
22-02-2018 дата публикации

Trigger Assembly for a Pneumatic Tool

Номер: US20180050396A1
Автор: Chen Chun-Chiang, Lai Chun-Chi, Liu Chien-An
Принадлежит:

A trigger assembly for a pneumatic tool includes a trigger unit, a lever member and a switch unit. The pneumatic tool includes a casing, a valve rod movably mounted to the casing, and a safety member movably mounted to the casing. The trigger unit includes a trigger pivotable between a released position and a depressed position. The lever member is pivoted to the safety member. The switch unit includes a latch member pivotable relative to the trigger, and a switch member rotatable between a sequential firing position where the switch member is separated from the path of movement of the latch member, and a repetitive firing position where the switch member is disposed on the path of movement of the latch member. 1. A trigger assembly adapted for use in a pneumatic tool , the pneumatic tool including a casing , a valve rod that is movably mounted to the casing and that is operable to control airflow in the pneumatic tool for firing a nail , and a safety member that is movably mounted to the casing , the safety member being movable relative to the casing between a first position where the safety member is proximate to a valve seat to which the valve rod is mounted , and a second position where the safety member is distal from the valve seat , said trigger assembly comprising:a trigger unit including a trigger that is adapted to be pivoted to the casing, said trigger being pivotable relative to the casing between a released position and a depressed position;a lever member adapted to be pivoted to the safety member and partially located between the valve rod and said trigger for depressing the valve rod; anda switch unit including a latch member that is adapted to be pivoted to the casing and that is pivotable relative to said trigger, and a switch member that is adapted to be rotatably mounted to the casing and that is rotatable between a sequential firing position where said switch member is separated from the path of movement of said latch member, and a repetitive ...

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Номер записи: 25
02-03-2017 дата публикации

HAND-HELD POWER TOOL

Номер: US20170057072A1
Автор: Holubarsch Markus, Kristen Ferdinand, Lederle Benjamin, SCHMID Stefan
Принадлежит:

A hand-held power tool has a tool socket to hold a tool on a working axis . A pneumatic striking mechanism 6 has an exciter piston that is forced to move periodically along the working axis by a motor and it also has a striker that is coupled to the exciter piston via a pneumatic chamber . The exciter piston has a cylindrical main body made of a polymer. One or more rings containing copper surround the main body . The rings protrude from the main body in the radial direction. 15-. (canceled)6. A hand-held power tool comprising:a tool socket to hold a tool on a working axis;a motor;a pneumatic striking mechanism having an exciter piston forced to move periodically along the working axis by the motor and also having a striker coupled to the exciter piston via a pneumatic chamber, the exciter piston having a cylindrical main body made of a polymer; andat least one ring containing copper surround the main body, the at least one ring protruding from the main body in the radial direction.7. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and an outer diameter of the rings containing copper is between 0.2 mm and 1.0 mm claim 6 , and larger than an outer diameter of the main body.8. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and the rings cover between 25% and 70% of the jacket of the main body.9. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and a gap is provided between the rings along the working axis.10. The hand-held power tool as recited in wherein the exciter piston runs in a guide tube made of a polymer.11. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings protruding from the main body in the radial direction. The present invention relates to a hand-held power tool with a pneumatic striking mechanism, especially a hammer drill.A hand-held power tool of the ...

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Номер записи: 26
17-03-2022 дата публикации

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

Номер: US20220080574A1
Автор: Sun Yung Yung
Принадлежит:

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a top portion and a bottom portion, the top portion being provided with a concave room having an opening end and a bottom wall, the bottom portion being provided with an air inlet channel extending at an angle to communicate with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell, the inner tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel formed in a straight direction with no bend on a front side of the handle, a drilled opening formed on the ...

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Номер записи: 27
29-05-2014 дата публикации

PERCUSSION MECHANISM APPARATUS

Номер: US20140144658A1
Автор: Koalick Jan, Schmid Lars, Schnitzler Johannes
Принадлежит: ROBERT BOSCH GMBH

A percussion mechanism apparatus, in particular for a rotary and/or demolition hammer, includes at least one striker, at least one percussion pin with at least one guide lug that faces the striker, and at least one movably mounted control disc arranged around the guide lug. The guide lug has at least one end that projects beyond the control disc in every operating state. 1. A striking mechanism device , comprising:at least one striker;at least one striking pin having at least one guide lug facing toward the striker; andat least one movably mounted control disc disposed around the guide lug,wherein one end of the guide lug projects beyond the control disc in each operating state.2. The striking mechanism device as claimed in claim 1 , wherein claim 1 , in each operating state claim 1 , the end of the guide lug that faces toward the striker claim 1 , projects at least by more than 0.1 mm beyond the control disc along a direction oriented contrary to a striking direction of the striker.3. The striking mechanism device as claimed in claim 1 , wherein the guide lug has an axial extent that is at least greater than 25% of a total extent of the striking pin along a striking direction of the striker.4. The striking mechanism device as claimed in claim 1 , wherein the striker claim 1 , at an end of the striker that faces toward the guide lug claim 1 , has at least one insertion recess configured to enable the guide lug to be inserted as the striker approaches the striking pin.5. The striking mechanism device as claimed in claim 4 , wherein the insertion recess is configured as a blind hole.6. The striking mechanism device as claimed in claim 4 , wherein the insertion recess is of a depth that is at least greater than 10% of a total extent of the striker along a direction oriented contrary to a striking direction of the striker.7. A portable power tool claim 4 , comprising: at least one striker;', 'at least one striking pin having at least one guide lug facing toward the ...

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Номер записи: 28
19-03-2015 дата публикации

HANDHELD TOOL DEVICE

Номер: US20150075828A1
Автор: HERR Tobias
Принадлежит:

A handheld tool device includes a hammer mechanism that has at least a striker and a cam guide that drives the striker at least in a hammer-drilling mode. The striker has at least a portion of the cam guide. 114-. (canceled)15. A handheld tool device , comprising:a hammer mechanism which includes a striker and at least one cam guide which drives the striker at least in a hammer-drilling mode, wherein the striker has at least a portion of the cam guide.16. The handheld tool device as recited in claim 15 , wherein the cam guide has an impact free-running region.17. The handheld tool device as recited in claim 16 , wherein the cam guide has an impact pull-up region.18. The handheld tool device as recited in claim 17 , wherein the cam guide has a mounting aperture.19. The handheld tool device as recited in claim 15 , wherein the hammer mechanism includes a hammer mechanism spindle which has at least a portion of the cam guide.20. The handheld tool device as recited in claim 19 , wherein the hammer mechanism spindle has a guide cam of the cam guide.21. The handheld tool device at least as recited in claim 19 , wherein the striker at least substantially surrounds the hammer mechanism spindle on at least one plane.22. The handheld tool device as recited in claim 19 , wherein the hammer mechanism has a connecting element which in at least one operating state transmits a motion to the striker.23. The handheld tool device as recited in claim 19 , further comprising:a tool spindle, wherein the striker at least substantially surrounds the tool spindle on at least one plane.24. The handheld tool device at least as recited in claim 23 , wherein the tool spindle is disposed at least substantially coaxially with the hammer mechanism spindle.25. The handheld tool device as recited in claim 15 , wherein the hammer mechanism has a striker guide which supports the striker in a rotationally rigid manner.26. The handheld tool device as recited in claim 15 , further comprising:a handheld ...

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Номер записи: 29
12-06-2014 дата публикации

Torque-Limited Impact Tool

Номер: US20140158388A1
Автор: Johnson Joshua Odell
Принадлежит: INGERSOLL-RAND COMPANY

Illustrative embodiments of torque-limited impact tools are disclosed. An impact tool may include a shaft adapted to rotate about an axis, a hammer having a hammer jaw with an obtuse impact surface, and an anvil having an anvil jaw with an acute impact surface. The shaft may include a first helical groove, and the hammer may include a second helical groove. The impact tool may further include a ball received in the first and second helical grooves, wherein the ball rotationally couples the hammer to the shaft and permits axial travel of the hammer relative to the shaft. The obtuse impact surface of the hammer jaw may be adapted to impact the acute impact surface of the anvil jaw when the shaft rotates in a first direction. 1. An impact tool comprising:a shaft adapted to rotate about an axis, the shaft having a first helical groove;a hammer having a second helical groove and a hammer jaw with an obtuse impact surface;a ball received in the first and second helical grooves, wherein the ball rotationally couples the hammer to the shaft and permits axial travel of the hammer relative to the shaft; andan anvil having an anvil jaw with an acute impact surface, wherein the obtuse impact surface of the hammer jaw is adapted to impact the acute impact surface of the anvil jaw when the shaft rotates in a first direction.2. The impact tool of claim 1 , wherein the hammer jaw includes a forward impact face having a hammer lug extending outwardly from the forward impact face claim 1 , the obtuse impact surface forming an edge of the hammer lug.3. The impact tool of claim 2 , wherein the obtuse impact surface is disposed at an obtuse angle with respect to the forward impact face claim 2 , the obtuse angle being greater than 90 degrees and less than 180 degrees.4. The impact tool of claim 3 , wherein the obtuse angle is greater than 105 degrees and less than 165 degrees.5. The impact tool of claim 2 , wherein the anvil jaw includes a central section and an anvil lug extending ...

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Номер записи: 30
12-03-2020 дата публикации

PNEUMATIC HAMMER

Номер: US20200078917A1
Автор: Liaw Jian-Shiou
Принадлежит:

A pneumatic hammer has a handle, a body, a valve seat, a cylinder device, an assembling device, and a chisel. The body is transversally connected to the handle and has a chamber. The valve seat is mounted in the chamber of the body and has a rear valve, a front valve, and a valve plate disposed between the rear valve and the front valve. The cylinder device is mounted in the chamber, abuts against the valve seat, and has a cylinder barrel and a hammer. The cylinder barrel is mounted in the chamber and has a cylinder chamber. The hammer is movably disposed in the cylinder chamber. The assembling device is connected to the cylinder device, and has a mounting jacket, an engaging element, multiple positioning elements, a spring, and an engaging ring. The chisel is detachably connected to the assembling device, and is inserted into the cylinder chamber. 1. A pneumatic hammer comprising:a handle having a top; a closed end;', 'an open end opposite to the closed end of the body;', 'an external surface; and', 'a chamber formed in the body between the closed end and the open end of the body and communicating with the open end of the body;, 'a body transversally connected to the top of the handle, communicating with the handle, and having'} a rear valve;', 'a front valve connected to the rear valve; and', 'a valve plate mounted between the rear valve and the front valve;, 'a valve seat mounted in the chamber of the body adjacent to the closed end of the body and having'} a cylinder barrel mounted in the chamber via the open end of the body, abutting against the valve seat, and having a cylinder chamber axially formed in the cylinder barrel and communicating with the valve seat; and', 'a hammer axially and movably mounted in the cylinder chamber of the cylinder barrel;, 'a cylinder device mounted in the chamber of the body via the open end of the body, abutting against the valve seat, and having'} [ a rear end;', 'a front end;', 'an internal surface;', 'an assembling chamber ...

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Номер записи: 31
12-03-2020 дата публикации

WORK TOOL

Номер: US20200078919A1
Автор: HISANO Taro, MACHIDA Yoshitaka
Принадлежит: MAKITA CORPORATION

A work tool includes a motor, a driving mechanism, a body housing and a handle. The driving mechanism is configured to perform an operation of linearly reciprocating the tool accessory along a driving axis extending in a front-rear direction. The handle includes a grip part extending substantially in an up-down direction, and a battery-mounting part provided on a lower side of the grip part. An upper end portion of the handle is connected to a rear end portion of the body housing via an elastic member so as to be movable relative to the body housing. A lower end portion of the handle is connected to the rear end portion of the body housing so as to be rotatable relative to the body housing, around a rotation axis extending in a left-right direction. The rotation axis is located on a lower side of the battery-mounting part. 1. A work tool configured to perform an operation by driving a tool accessory , the work tool comprising:a motor;a driving mechanism configured to perform an operation of linearly reciprocating the tool accessory along a driving axis by power of the motor, the driving axis extending in a front-rear direction of the work tool;a body housing that houses the motor and the driving mechanism; anda handle including a grip part and a battery-mounting part, the grip part extending substantially in an up-down direction crossing the driving axis, the battery-mounting part being provided on a lower side of the grip part and configured to removably receive a battery, wherein:an upper end portion of the handle is connected to a rear end portion of the body housing via an elastic member so as to be movable relative to the body housing,a lower end portion of the handle is connected to the rear end portion of the body housing so as to be rotatable around a rotation axis relative to the body housing, the rotation axis extending in a left-right direction, andthe rotation axis is located on a lower side of the battery-mounting part.2. The work tool as defined in ...

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Номер записи: 32
25-03-2021 дата публикации

IMPACT ROTARY TOOL

Номер: US20210086333A1
Автор: HONDA Akiko, Mizuno Mitsumasa, MURAKAMI Hiroaki, MURUl Itaru
Принадлежит:

An impact rotary tool includes: a driver, a spindle, an anvil disposed in front of the spindle in a rotation axis direction, a main hammer applying a rotation force to the anvil, and a sub-hammer applying, to the main hammer having applied the rotation force to the anvil, a rotation force in the same direction. 1. An impact rotary tool comprising:a driver;a spindle rotated by the driver;an anvil disposed in front of the spindle in a rotation axis direction;a first hammer structured to apply a rotation force to the anvil; anda second hammer structured to apply, to the first hammer having applied the rotation force to the anvil, a rotation force in the same direction.2. The impact rotary tool according to claim 1 , whereinafter the first hammer has an impact on the anvil to reduce a circumferential clearance between the anvil and a tightened member, the: second hammer has an impact on the first hammer.3. The impact rotary tool according to claim 1 , whereinthe second hammer has an impact on the first hammer in contact with the anvil.4. The impact rotary tool according to claim 1 , whereinthe first hammer is rotatable around a rotation axis of the spindle and is movable in the rotation axis direction, andthe first hammer is connected to the second hammer by a connection structure having a circumferential clearance.5. The impact rotary tool according to claim 4 , whereinthe second hammer has an internal space for accommodating the first hammer, andthe connection structure is a structure in which a convex portion or a concave portion provided on an outer circumferential surface of the first hammer and a concave portion or a convex portion provided on an inner circumferential surface of the second hammer are loosely fitted.6. The impact rotary tool according to claim 4 , whereinthe clearance is set so that the second hammer has an impact on the first hammer after a predetermined time elapses from when the first hammer has an impact on the anvil.7. The impact rotary tool ...

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Номер записи: 33
25-03-2021 дата публикации

Hydraulic Hammering Device

Номер: US20210086337A1
Автор: Kaneko Tsutomu, KOBAYASHI Isao, MURAKAMI Susumu, Nagano Shinsuke, Shioda Atsushi
Принадлежит:

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1. A hydraulic hammering device , comprising:a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of ...

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Номер записи: 34
30-03-2017 дата публикации

HAMMER ASSEMBLY

Номер: US20170087703A1
Автор: MOORE Cody
Принадлежит: CATERPILLAR INC.

A hammer including a housing and a piston arranged for reciprocating movement within the housing is disclosed. The hammer further includes a head assembled on the housing and defining a chamber for holding a pressurized gas and a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing. A plug is positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber. 1. A hammer comprising:a housing;a piston arranged for reciprocating movement within the housing;a head assembled on the housing and defining a chamber for holding a pressurized gas; the head comprising a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing; anda plug positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber on separation of the head from the housing.2. The hammer of claim 1 , wherein the plug abuts the housing.3. The hammer of claim 1 , wherein the plug defines a clearance with the gas discharge passage.4. The hammer of claim 3 , wherein the plug comprises of a seal configured to engage the gas discharge passage.5. The hammer of claim 1 , wherein the head is assembled on the housing by bolts.6. The hammer of claim 1 , wherein the pressurized gas is nitrogen.7. The hammer of claim 1 , wherein the gas discharge passage has a first end exposed to the chamber and a second end having a receptacle configured to receive the plug.8. A hammer comprising:a first member and a second member configured for attachment to each other and defining a chamber for holding a pressurized gas;a gas discharge passage defined in the first member and extending between the chamber and an outside surface of the first member;a plug inserted in the gas discharge passage, the plug retained in the gas discharge passage against the pressure of the gas in the chamber by ...

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Номер записи: 35
30-03-2017 дата публикации

BUFFER SYSTEM FOR HYDRAULIC HAMMER

Номер: US20170087706A1
Автор: Moore Cody T.
Принадлежит: CATERPILLAR INC.

A buffer system for a hydraulic hammer is disclosed. The buffer system includes a wear member disposed between a first component and a second component. The wear member includes a first surface. The first surface is adapted to abut an inner surface of the first component. The wear member also includes a second surface distal to the first surface. The second surface is adapted to abut an outer surface of the second component. The buffer system also includes an insert member disposed in the wear member between the first surface and the second surface thereof. The insert member provides a visual indication when a predefined thickness of the wear member between the first surface and the second surface is worn. 1. A buffer system for a hydraulic hammer , the buffer system comprising: a first surface configured to abut an inner surface of the first component; and', 'a second surface distal to the first surface, the second surface configured to abut an outer surface of the second component; and, 'a wear member disposed between a first component and a second component, the wear member comprisingan insert member disposed in the wear member between the first surface and the second surface thereof, wherein the insert member provides a visual indication when a predefined thickness of the wear member between the first surface and the second surface is worn.2. The buffer system of claim 1 , wherein the wear member comprises a first thickness extending between the first surface and the second surface claim 1 , wherein the first thickness is configured to provide a clearance fit between the first component and the second component.3. The buffer system of claim 1 , wherein the wear member comprises:a first end and a second end distal from the first end, and wherein the wear member defines a length extending between the first end and the second end thereof; anda first side and a second side distal from the first side, the first side and the second side extending between the first end ...

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Номер записи: 36
01-04-2021 дата публикации

ANTI-TOPPING IMPACT TOOL MECHANISM

Номер: US20210094157A1
Автор: Chellew Justin
Принадлежит: INGERSOLL-RAND COMPANY

An impact tool has an anti-topping mechanism (“ATM”) adapted to reduce the rotational frictional force between the contact surfaces of the hammer and anvil to prevent topping. If topping still occurs, the ATM quickly breaks the topped condition. The ATM may reduce the rotational frictional torque between the hammer and anvil of an impact mechanism or provide increased the rotational friction acting on the anvil from adjoining elements of the tool thus tending to hold the anvil (by heightened rotational friction) while the hammer can be broken free. ATM mechanisms include hammer and jaw surfaces angled at interface points; stepping either the hammer or anvil jaw surfaces so that only the innermost portions interact; rounding or crowning either or both of the anvil and hammer jaw surfaces so minimal portions of the jaws are ever topped; and software-controlled detection and breaking of a topped condition. In torque-controlled impact tools, these mechanisms decrease the risk of accuracy or repeatability issues. 1. An impact tool , comprising:a tool shaft adapted to rotate about an axis;a hammer adapted to rotate about the axis and comprising a hammer jaw, the hammer jaw comprising a hammer jaw forward impact surface and a hammer jaw top surface that is perpendicular to the hammer jaw forward surface; andan anvil adapted to rotate upon impact with the hammer jaw, the anvil comprising an anvil jaw with an anvil jaw bottom surface and an anvil jaw forward impact surface that is perpendicular to the anvil jaw bottom surface,wherein the hammer jaw top surface is, at least partially, angled relative to the anvil jaw bottom surface.2. The impact tool of claim 1 , wherein the hammer jaw top surface is crowned.3. The impact tool of claim 1 , wherein the hammer jaw top surface comprises a raised surface.4. The impact tool of claim 1 , further comprising:at least one sensor configured to detect a position of the hammer jaw relative to the anvil jaw; and detect that the hammer jaw ...

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Номер записи: 37
08-04-2021 дата публикации

Pneumatic Tool Having Movable Air Tube

Номер: US20210101271A1
Автор: Hsieh Chih-Kuan, LAI YA-CHUN
Принадлежит:

A pneumatic tool contains: a body, a drive unit, a piston element, at least one buffer, and a movable air tube. The body includes an intake head, a limiting sleeve, a switch, an air conduit, and a connection portion. The connection portion has a first guide element, a first guiding orifice, and the limiting sleeve has a shoulder. The drive unit includes a moving tube, a first segment, and a second segment. The moving tube has a protrusion, the second segment has a second guide element and a second guiding orifice. The moving tube has a coupling orifice and a cavity, and an air valve is defined between the cavity and the second guide element. One buffer is defined between the first guide element and the second guide element and includes a first through hole. The movable air tube includes an air inlet segment and an air outlet segment. 1. A pneumatic tool having a movable air tube comprising:a body including an intake head and a limiting sleeve, the intake head having a switch arranged on an outer wall of the intake head, an air conduit defined in the intake head, and a connection portion formed on an end of the intake head, wherein the connection portion has a first guide element connected on an edge thereof, and the first guide element has a first guiding orifice, a first end of the limiting sleeve is connected with the connection portion of the intake head, and the limiting sleeve has a shoulder formed therein;a drive unit including a moving tube which has a first segment and a second segment, and the moving tube being slidably received in the limiting sleeve of the body, wherein the moving tube has a protrusion formed on an outer wall thereof and stopped by the shoulder of the limiting sleeve so that the moving tube does not slide forward in the limiting sleeve, the second segment of the moving tube has a second guide element arranged therein, the second guide element has a second guiding orifice defined thereon, the moving tube has a coupling orifice defined on a ...

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Номер записи: 38
19-04-2018 дата публикации

REVERSIBLE BUSHING

Номер: US20180104806A1
Автор: MOORE Cody
Принадлежит: CATERPILLAR INC.

A reversible bushing for a hydraulic hammer is provided. The reversible bushing includes a body having a first end, a second end, an inner surface, and an outer surface. The reversible bushing includes a first notch provided in relation to a center of symmetry. The reversible bushing includes a first channel provided on the first end of the body. The reversible bushing includes a second channel provided on the second end of the body. The reversible bushing also includes a first groove provided on the first end of the body. The reversible bushing further includes a second groove provided on the second end of the body. The first channel and the second channel are equidistant with respect to the center of symmetry. The first groove and the second groove are equidistant with respect to the center of symmetry. 1. A reversible bushing for a hydraulic hammer , the reversible bushing comprising:a body having an elongated configuration defining a longitudinal axis, the body having a first end and a second end distal with respect to the first end, the body having an inner surface and an outer surface disposed opposite with respect to the inner surface, the body defining a center of symmetry on the longitudinal axis;a first notch provided in relation to the center of symmetry, the first notch extending at least partially along the body;a first channel provided on the first end of the body, the first channel extending at least partially along the inner surface of the body;a second channel provided on the second end of the body, the second channel extending at least partially along the inner surface of the body;a first groove provided on the first end of the body, the first groove provided spaced apart with respect to the first channel, the first groove extending at least partially along the inner surface of the body; anda second groove provided on the second end of the body, the second groove provided spaced apart with respect to the second channel, the second groove extending ...

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Номер записи: 39
20-04-2017 дата публикации

DE-CORING VIBRATOR OR PNEUMATIC HAMMER FOR DE-CORING OF FOUNDRY CASTINGS WITH ALUMINIUM ALLOY JACKET

Номер: US20170106440A1
Автор: LERDA Fabrizio
Принадлежит:

A pneumatic hammer or de-coring vibrator is for de-coring of foundry castings. The hammer includes a jacket, in turn having an inner chamber; an inlet circuit for the entry of compressed air, and an outlet circuit for the exit of compressed air. The hammer further includes a motion mechanism for generating vibratory motion under the action of compressed air. The motion mechanism is arranged within the inner chamber of the jacket; and a punch or beater is connected to the motion mechanism, for coming into contact with the casting to be subjected to de-coring. The jacket of the hammer is made of an alloy including aluminum, silicon and magnesium. 2. The hammer according to claim 1 , wherein said aluminium alloy comprises claim 1 , in combination with or as an alternative to silicon or magnesium claim 1 , one or more metallic elements selected from:copper;manganese;titanium;zinc.3. The hammer according to claim 2 , wherein the percentage in weight of the metallic elements is:copper 0.8%-1.5%;manganese 0.3%-0.75titanium 0.1%-0.18%;zinc 0.1%-0.75%8. The hammer according to claim 1 , wherein said cylinder or jacket is made as one monolithic body.9. The hammer according to claim 8 , wherein the cylinder or jacket is molded or chill cast. The present invention relates to a pneumatic vibrator, also known in the industry as pneumatic hammer, for de-coring of castings made from aluminium, steel and iron alloys.For the purposes of the present description, the term de-coring refers, in general, to removal of sand material from foundry castings.Also, for the purposes of the present description, the term castings refers to parts/objects obtained by casting metals into suitable moulds.Patent WO2007006936 describes a pneumatic hammer or de-coring vibrator.The vibrator or hammer comprises a jacket comprising holes for inlet and outlet of compressed air. Inside the jacket there is a mechanical assembly consisting of a cylinder in which a piston slides under the action of compressed ...

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Номер записи: 40
20-04-2017 дата публикации

Cushion Device for Cylinder of Pneumatic Tool

Номер: US20170106519A1
Автор: Hsieh Chih Kuan
Принадлежит:

A cushion device is used for a cylinder of a pneumatic tool, and the pneumatic tool contains: a body, a cylinder, a valve unit, a piston member, a cushion washer, and at least one spring. The body includes a grip and a fitting sleeve having a chamber, a closing element, and an opening. The cylinder is fitted in the chamber and includes a room and an abutting portion. The valve unit is mounted between the room and the abutting portion. The piston member is accommodated in the room and slides along a movement axis. The cushion washer and the at least one spring are mounted in the chamber, and the cushion washer abuts against the closing element and the pressing face. The cushion washer includes at least one open segment which has at least one air groove each having a mouth parallel to the movement axis. 1. A cushion device for a cylinder of a pneumatic tool , and the pneumatic tool comprising:a body including a grip and a fitting sleeve fitted with the grip, the fitting sleeve having a chamber defined therein, a closing element formed on a first end thereof, and an opening formed on a second end thereof, the closing element having an accommodation trough defined on a first side thereof facing the opening;a cylinder slidably fitted in the chamber of the fitting sleeve, and a part of the cylinder extending out of the fitting sleeve from the opening of the chamber, the cylinder including a room formed therein and an abutting portion adjacent to the closing element of the chamber of the fitting sleeve;a valve unit mounted between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the cylinder and sliding forward and backward along a movement axis;a cushion washer being flexible and mounted in the chamber of the fitting sleeve, and the cushion washer abutting against the closing element of the chamber of the fitting sleeve and the pressing face of the abutting portion of the cylinder, wherein the cushion washer includes at least ...

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Номер записи: 41
27-04-2017 дата публикации

Piston and Magnetic Bearing for Hydraulic Hammer

Номер: US20170113337A1
Автор: Dostinov Dimitar
Принадлежит: CATERPILLAR INC.

A hydraulic hammer includes a power cell. A work tool is partially received in, and movable with respect to, the power cell. A sleeve is positioned in the power cell that defines a centerline. A piston is concentrically positioned in the sleeve and movable in the sleeve between a first position in contact with the work tool and a second position out of contact with the work tool. A magnetic guide system includes at least one of a first magnetic guide component disposed in the piston and at least one of a second magnetic guide component disposed in the sleeve that interact to produce magnetic repellent forces therebetween to urge the radial position of the piston towards the center line. 1. A hydraulic hammer , comprising:a power cell;a work tool partially received in, and movable with respect to, the power cell;a sleeve positioned in the power cell and defining a centerline;a piston with a plurality of hydraulic surfaces, the piston concentrically positioned in the sleeve and movable in the sleeve between a first position in contact with the work tool and a second position out of contact with the work tool; anda magnetic guide system including at least one of a first magnetic guide component disposed in the piston and at least one of a second magnetic guide component disposed in the sleeve that interact to produce magnetic repellent forces therebetween to urge the radial position of the piston towards the centerline.2. The hydraulic hammer of claim 1 , wherein the magnetic guide system includes an electrodynamic bearing system.3. The hydraulic hammer of claim 2 , wherein the first magnetic guide component includes a first ring magnet and a second ring magnet disposed in an axially spaced apart configuration in the piston.4. The hydraulic hammer of claim 3 , wherein the second magnetic guide component includes a first conductive cylinder and a second conductive cylinder claim 3 , the first and second conductive cylinders disposed adjacent respective first and second ...

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Номер записи: 42
04-05-2017 дата публикации

DE-CORING VIBRATOR OR PNEUMATIC HAMMER FOR DE-CORING OF FOUNDRY CASTINGS WITH BACK CONNECTORS

Номер: US20170120324A1
Автор: LERDA Fabrizio
Принадлежит:

A hammer includes a jacket, which includes an inner chamber, an inlet circuit for entry of compressed air, and an outlet circuit for exit of compressed air. The hammer further includes a motion mechanism, for generating a vibratory motion under the action of compressed air; and a punch or beater, connected to the motion mechanism, for coming into contact with the casting to be de-cored, forming a first end of the hammer. The inlet circuit includes an inlet connector for connecting the hammer to a compressed-air circuit; the inlet connector being located at a second end of the hammer, opposite to the end where the punch or beater is located. The outlet circuit has an outlet connector for connecting the hammer to an air recovery circuit. The outlet connector is located at the second end of the hammer, in proximity to the inlet connector. 1. The pneumatic hammer or de-coring vibrator for de-coring of foundry castings; the hammer comprising: an inner chamber,', 'an inlet circuit for entry of compressed air, and', 'an outlet circuit for exit of compressed air;, 'a jacket comprisinga motion mechanism, for generating a vibratory motion under action of compressed air;a punch or beater, connected to said motion mechanism coming into contact with a casting to be subjected to de-coring, forming a first end of the hammer;said inlet circuit comprises an inlet connector connecting the hammer to a compressed-air circuit; said inlet connector being located at a second end of the hammer, opposite to the first end of the hammer;said outlet circuit comprises an outlet connector connecting the hammer to an air recovery circuit; said outlet connector is located at the second end of the hammer, in proximity to the inlet connector.2. The hammer according to claim 1 , wherein the outlet circuit comprises:an outlet opening formed in the cylinder, through which air comes out upon activation of the motion mechanism; andat least one exit duct extending from said outlet opening to said second ...

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Номер записи: 43
14-05-2015 дата публикации

IMPACT DEVICE AND METHOD OF DISMOUNTING THE SAME

Номер: US20150129269A1
Автор: Hämäläinen Mikko, HIETAKARI Teemu, KANDELIN Lars, MUUTTONEN Timo
Принадлежит:

An impact device and a method of dismounting an impact device from a breaking device is disclosed. The impact device includes a bush having a percussion piston disposed therein. The impact device is arranged inside an impact device space formed in a frame of a breaking device. The percussion piston is provided with a pull shoulder allowing a dismounting force in a return direction to be transmitted from the percussion piston to the bush. Thus, the bush is extracted from the frame by means of the percussion piston. 1. An impact device comprising:a percussion piston, which is an elongated object provided with at least one first working pressure surface for moving the percussion piston in an impact direction by a pressure medium, and at least one second working pressure surface for moving the percussion piston in a return direction, the percussion piston including a front end facing towards the impact direction and a rear end facing towards the return direction;a bush, which is an elongated object provided with an outer surface and an inner surface, wherein the percussion piston is located inside the bush;at least one bearing for supporting the percussion piston in the bush;pressure medium ducts for connecting the working pressure surfaces of the percussion piston to a pressure medium system; andat least one pull shoulder having an outer diameter and a first counter surface facing towards the return direction, the inner surface of the bush being provided with at least one counter section located between the pull shoulder and a rear end of the bush, the counter section having an inner diameter, and a second counter surface facing towards the impact direction wherein the outer diameter of the pull shoulder is greater than the inner diameter of the counter section, and wherein the first counter surface of the pull shoulder and the second counter surface of the counter section abut when the percussion piston is pulled in the return direction.2. The impact device as claimed ...

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Номер записи: 44
11-05-2017 дата публикации

DE-CORING VIBRATOR OR PNEUMATIC HAMMER FOR DE-CORING OF FOUNDRY CASTINGS WITH INTEGRATED SENSOR

Номер: US20170129007A1
Автор: LERDA Fabrizio
Принадлежит:

A hammer includes a jacket having an inner chamber; an inlet circuit for the entry of compressed air, and an outlet circuit for the exit of compressed air. The hammer includes a motion mechanism, for generating vibratory motion under the action of compressed air; and a punch or beater, connected to the motion mechanism, for contacting the casting to be de-cored, forming a first end of the hammer. The hammer has a measurement circuit measuring the oscillation frequency of the motion circuit. The measurement circuit includes a sensor for measuring the oscillation frequency of the motion circuit; a processing circuit, enclosed in a protective casing, for receiving electric signals transmitted by the sensor, and a communication line for conducting electric signals from and/or to the measurement circuit. The jacket includes a housing formed in the outer surface of the jacket, such that it incorporating the measurement circuit protective casing. 1. A pneumatic hammer or de-coring vibrator for de-coring of foundry castings; the hammer comprising: an inner chamber;', 'an inlet circuit for entry of compressed air; and', 'an outlet circuit for exit of compressed air;, 'a jacket comprisinga motion mechanism, for generating a vibratory motion under action of compressed air;a punch or beater, connected to said motion mechanism, for coming into contact with a casting to be subjected to de-coring, forming a first end of the hammer;a measurement circuit for measuring an oscillation frequency of the motion mechanism;said measurement circuit comprises:at least one sensor for measuring the oscillation frequency of the motion mechanism;a processing circuit, enclosed in a protection casing, for receiving electric signals transmitted by said at least one sensor; anda communication line for conducting electric signals from and/or to said measurement circuit;said jacket comprises a housing formed in the outer surface of the jacket, such that the housing incorporates within an outer profile ...

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Номер записи: 45
01-09-2022 дата публикации

HYDRAULIC ROTARY-PERCUSSIVE HAMMER DRILL PROVIDED WITH A STOP PISTON

Номер: US20220274240A1
Автор: CHEYLUS François-Xavier, Escolle Michel
Принадлежит:

The hydraulic rotary-percussive hammer drill includes a body; a shank; a striking piston configured to hit the shank; a stop piston configured to position the shank in a predetermined balanced position, the body and the stop piston delimiting a first control chamber permanently connected to a high-pressure fluid feed-in conduit and configured to urge the stop piston forwards, and a second control chamber configured to urge the stop piston forwards. The hydraulic rotary-percussive hammer drill comprises a fluidic communication channel opening into the second control chamber, configured to supply the second control chamber with high-pressure fluid and provided with a calibrated orifice. 1. A hydraulic rotary-percussive hammer drill , comprising:a body;a shank intended to be coupled to at least one drill bar equipped with a tool;a striking piston slidably mounted inside the body along a striking axis and configured to hit the shank;a stop piston which is slidably mounted in a cavity of the body according to an axis of displacement substantially parallel to the striking axis, the stop piston including a front face facing the shank and configured to position the shank in a predetermined balanced position with respect to the striking piston, and a rear face opposite to the front face and located opposite a rear wall of the cavity; anda high-pressure fluid feed-in conduit and a low-pressure fluid return conduitthe body and the stop piston delimiting at least partially a first control chamber permanently connected to the high-pressure fluid feed-in conduit and configured to urge the stop piston forwards, the hydraulic rotary-percussive hammer drill further comprising a connecting channel configured to fluidly connect the first control chamber to the low-pressure fluid return conduit when the rear face of the stop piston is located at a distance from the rear wall of the cavity which is larger than a predetermined value,wherein the body and the stop piston further delimiting ...

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Номер записи: 46
01-09-2022 дата публикации

ROTARY-PERCUSSIVE HYDRAULIC PERFORATOR PROVIDED WITH A STOP PISTON AND A BRAKING CHAMBER

Номер: US20220274242A1
Автор: CHEYLUS François-Xavier, Escolle Michel
Принадлежит:

The rotary-percussive hydraulic perforator a body; a shank; a striking piston configured to strike the shank and provided with a braking surface; a braking chamber configured to hydraulically brake the striking piston; a stop piston configured to apply a pushing force on the shank and provided with a bearing surface configured to abut against a stop surface provided on the body, so as to limit the stroke of displacement of the stop piston towards the shank. The rotary-percussive hydraulic perforator is configured such that the bearing surface and the stop surface are axially spaced apart by a predetermined spacing distance simultaneously when (i) the shank bears on the stop piston and is in contact with the striking piston, and (ii) the braking surface is located at an inlet edge of the braking chamber. 1. A rotary-percussive hydraulic perforator comprising:a body;a shank mounted in the body and intended to be coupled to at least one drill bar equipped with a tool;a striking piston slidably mounted inside the body according to a striking axis and configured to strike the shank, the striking piston including a braking surface which extends transversely to the striking axis;a braking chamber configured to hydraulically brake the striking piston when the striking piston exceeds a predetermined striking position, the braking chamber being configured to be partially closed by the braking surface of the striking piston when the striking piston exceeds the predetermined striking position;a stop piston which is tubular and which is slidably mounted inside the body along an axis of displacement substantially parallel to the striking axis, the stop piston being configured to apply a pushing force on the shank, the stop piston comprising a bearing surface configured to abut against a stop surface provided on the body, so as to limit a stroke of displacement of the stop piston towards the shank;wherein the rotary-percussive hydraulic perforator is configured such that the ...

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Номер записи: 47
19-05-2016 дата публикации

BREAKING MACHINE SHOCK ABSORBING APPARATUS

Номер: US20160136798A1
Автор: Robson Angus Peter
Принадлежит: TERMINATOR IP LIMITED

A breaking apparatus () with a housing (), striker pin (), moveable mass () and shock absorber. The striker pin () has a driven end and an impact end and a longitudinal axis extending between the two ends. The striker pin () is locatable in the housing () such that the impact end protrudes from the housing (). The moveable mass () impacts on the driven end of the striker pin () and the shock-absorber is coupled to the striker pin () by a retainer () interposed between a first () and second () shock-absorbing assemblies located internally within the housing () along, or parallel to, the striker pin longitudinal axis. The first shock-absorbing assembly () is positioned between the retainer () and movable mass () and is formed from a plurality of un-bonded layers including at least two elastic layers () interleaved by an inelastic layer (). 1. A breaking apparatus which includes;a housing with a nose block portion;a striker pin having a driven end and an impact end and a longitudinal axis extending between the driven and impact ends, said striker pin locatable in the housing such that said impact end protrudes from the housing;a moveable mass for impacting on said driven end of the striker pin along an impact axis, substantially co-axial with the striker pin longitudinal axis;a shock absorber including a first and second shock-absorbing assemblies located internally within said housing along, or parallel to, the striker pin longitudinal axis, at least the first shock-absorbing assembly formed from at least two elastic layers interleaved by an inelastic layer;a retainer, said shock-absorber coupled to the striker pin by said retainer, said retainer being interposed between said first and second shock-absorbing assemblies and wherein said first shock-absorbing assembly is positioned between said retainer and said movable mass;guide elements located within said nose block, andwherein the first and second shock absorbing assemblies are contained within said housing, ...

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Номер записи: 48
17-05-2018 дата публикации

Hydraulic hammer and sleeve therefor

Номер: US20180133882A1
Автор: Cody T. Moore, Dennis W. Tang
Принадлежит: Caterpillar Inc

The present disclosure provides a sleeve for a hydraulic hammer. The sleeve includes an elongated body. The elongated body defines an outer surface, an inner surface, and a plurality of axial conduits to transmit hydraulic fluid. The elongated body further defines a plurality of radial holes extending from the plurality of axial conduits to the inner surface of the elongated body. The elongated body also defines a plurality of circumferential grooves on the inner surface. Each of the plurality of circumferential grooves is located along a longitudinal axis of the sleeve. The elongated body also defines at least one micro channel extending radially to form a fluid connection between each of the plurality of axial conduits and each of the plurality of circumferential grooves to transmit the hydraulic fluid for lubrication on the inner surface of the elongated body.

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Номер записи: 49
18-05-2017 дата публикации

Hydraulic buffer with fast startup

Номер: US20170138376A1
Автор: Cody T. Moore
Принадлежит: Caterpillar Inc

An accumulator assembly includes a vessel having an upper portion and a lower portion. The accumulator assembly includes a flexible membrane extending between the upper portion and the lower portion. The membrane may divide the vessel into a first interior chamber and a second interior chamber. The accumulator assembly includes a receptacle located proximate the vessel. The receptacle may be in fluid communication with the second interior chamber. The accumulator assembly includes a plunger located at least partially within the receptacle.

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Номер записи: 50
31-05-2018 дата публикации

LATCH MECHANISM FOR RETAINING AND REMOVING A VALVE BODY OF A HYDRAULIC HAMMER

Номер: US20180147708A1
Автор: Grzybowski Joshua, MOORE Cody
Принадлежит: CATERPILLAR INC.

A method of retaining and removing a valve locking body from a powered hammer assembly comprises inserting a locking member into a radially extending aperture of a cylinder, inserting a spring until the spring contacts the locking member; and inserting a keeper radially inwardly of the spring and the locking member and attaching the keeper to the cylinder. 1. A locking valve body assembly for use with a powered hammer assembly , the valve body assembly comprising:a valve body that defines a circumferential direction, a radial direction and a longitudinal axis, a void configured to contain a pressurized fluid;a cylinder configured to receive the valve body, the cylinder defining a radially extending locking aperture on it circumferential surface; and a radially extending locking member;', 'a spring biasing the locking member into the radially extending locking aperture of the cylinder; and', 'an actuator configured to move the locking member radially inward., 'a latch mechanism including'}2. The locking valve body assembly of wherein the locking member includes a main body extending radially through the locking aperture and the actuator extends radially from the main body past the circumferential surface of the cylinder and the actuator is integral with the main body of the locking member.3. The locking valve body assembly of further comprising a keeper disposed radially inward to the locking member and being configured to limit the radial inward movement of the spring and the locking member.4. The locking valve body assembly of wherein the locking member further comprises a hook portion and the valve body further defines a pocket configured to receive the hook portion of the locking member.5. The locking valve body assembly of claim 4 , wherein the valve body further comprises a retaining flange and the retaining flange defines the pocket configured to receive the hook portion of the locking member.6. The locking valve body assembly of claim 3 , wherein keeper ...

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Номер записи: 51
31-05-2018 дата публикации

POWER TOOL

Номер: US20180147709A1
Автор: Hao Jingdong, Masatoshi Fukinuki
Принадлежит:

A power tool includes a housing, a prime mover disposed in the housing, a first cylinder formed with a first chamber, a first rotating member rotatable with respect to the first cylinder about a first axis under the driving of the prime mover, a first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder. The first cylinder and the first rotating member are disposed within the housing. The first piston is disposed within the first chamber The first rotating member is formed with a first transmission structure to drive the first piston The first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston. 1. A power tool , comprising:a housing;a prime mover disposed in the housing;a first cylinder formed with a first chamber;a first rotating member rotatable with respect to the first cylinder about a first axis under a driving force of the prime mover; anda first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder;wherein the first cylinder and the first rotating member are disposed within the housing, the first piston is disposed within the first chamber, the first rotating member is formed with a first transmission structure to drive the first piston, and the first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston.2. The power tool of claim 1 , wherein the prime mover comprises a prime mover shaft rotatable about a second axis perpendicular to the first axis and the power tool further comprises a reversing mechanism for reversing between the prime mover shaft and the first rotating member.3. The power tool of claim 2 , wherein the reversing mechanism comprises a first shaft that ...

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Номер записи: 52
31-05-2018 дата публикации

AIR CANNON

Номер: US20180147710A1
Автор: Henry William R., Martin Ralph M.
Принадлежит: THE CANNON COMPANY

A prior art powered wrist pin knocker is imported with a new plunger that prevents wobbling. The new plunger responds to a return vacuum pressure. The improved plunger is symmetrical along a longitudinal axis. New embodiments include a new side mount valve head to reduce length, a remote air controller and a variable length cylinder for the cannon. The new valve head is a simplified valve head assembly that adapts to an end of the cannon mount or a side mount or a remote mount. Another embodiment provides a stand for a surface mount application. This embodiment can have an extended piston for loosening tail bearings down a long channel. A manual return embodiment can use a rod to manually return the plunger to the proximal end for another firing cycle. 1. An air cannon comprising:a cannon barrel having a distal end with a collar to connect onto an exposed end of a wrist pin;said cannon barrel having a control end with an end cap having an inlet hole into the cannon barrel;a plunger mounted inside the cannon barrel;a multi-position valve assembly having a removable mount on the control end of the cannon barrel;said multi-position valve assembly having a compressed air inlet and a control air outlet;a hose connecting the control air outlet to the inlet hole; andsaid multi-position valve assembly further comprising a neutral position to block any compressed air entering the compressed air inlet, and having a shoot position to direct compressed air from the compressed air inlet to the inlet hole, and having a retract position.2. The air cannon of claim 1 , wherein the retract position further comprises a compressed air inlet diverter means that functions to create a vacuum at the inlet hole to retract the plunger back to the control end.3. The air cannon of claim 2 , wherein the compressed air inlet diverter further comprises a vortex tube claim 2 , wherein the compressed air crosses the vortex tube to create the vacuum.4. The air cannon of claim 1 , wherein the multi- ...

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Номер записи: 53
09-06-2016 дата публикации

Compact Pneumatic Auto Body Hammer with Fine Control of Impact Force

Номер: US20160158819A1
Автор: Johnson Paul E.
Принадлежит:

A hand-held pneumatic impact tool for striking and planishing metal panels includes a monostable, reciprocating impact mechanism in a small form factor, with an air pressure regulator to control striking force and interchangeable toolheads to apply the force as necessary to repair dented or crumpled vehicle bodies. 1. A vehicle-body impact repair tool comprising:a monostable reciprocating impact mechanism;a housing containing the impact mechanism;an interchangeable toolhead receptacle coupled to the impact mechanism; andan anvil adapted for installation in the toolhead receptacle, whereinthe housing outer periphery viewed perpendicular to a reciprocating axis of the impact mechanism overfills a 6 cm diameter circle but lies entirely within a 15 cm circle.2. The impact repair tool of wherein the monostable reciprocating impact mechanism is actuated by pneumatic pressure claim 1 , the tool further comprising:a pressure regulator to control a pressure of an air supply for actuating the impact mechanism.3. The impact repair tool of wherein the pressure regulator is incorporated within the housing containing the impact mechanism.4. The impact repair tool of wherein the pressure regulator is outside the housing and in fluid communication between the monostable reciprocating impact mechanism and the air supply.5. The impact repair tool of wherein a stroke of the monostable reciprocating mechanism is between about 0.5 cm and about 4 cm.6. The impact repair tool of wherein a stroke of the monostable reciprocating mechanism is between about 1 cm and about 2 cm.7. The impact repair tool of claim 1 , further comprising:a plurality of differently-shaped anvils, each adapted for installation in the toolhead receptacle.8. The impact repair tool of claim 7 , wherein the plurality of differently-shaped anvils consists of:a shrinking head;a small-radius convex head;a large-radius convex head;a conical point head;a knife-edge head; andan extended-reach convex head.9. A pneumatic body ...

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Номер записи: 54
08-06-2017 дата публикации

SYSTEMS AND METHODS FOR MODULATING PRESSURE WAVE THERAPY

Номер: US20170156973A1
Автор: Hart Lotta
Принадлежит:

A processor-controlled, energy-based therapy apparatus includes a device configured to provide therapeutic energy to a patient and a processor that controls the output of the device. The output of the device is based on output profiles programmed into the processor. The output profiles include a therapeutic energy output profile and a ramp-up energy profile. The therapeutic energy output profile includes a desired target energy level and a therapeutic duration for controlling the output of the device during a therapeutic period. The ramp-up energy output profile includes an initial treatment energy level and a ramp-up duration for controlling the output of the device during a ramp-up period. The energy output specified by the ramp-up energy output profile incrementally increases over the ramp-up duration as a function of the desired target energy level and the ramp-up duration. 1. (canceled)2. (canceled)3. A pressure wave therapy system comprising: a ballistic projectile positioned within a tube, and', 'a transmitter tip disposed at the end of the tube,', 'wherein compressed air accelerates the ballistic projectile through the tube to impact the transmitter tip to generate an acoustic pulse; and, 'a pressure wave therapy device configured to deliver acoustic pulses to a patient, the pressure wave therapy device comprisinga control unit configured to control the pressure wave therapy device to deliver a treatment program, the treatment program comprising a plurality of acoustic pulses, each acoustic pulse comprising a pressure, the control unit including a memory storing patient-specific treatment information relating to a pain threshold of the patient; anda pain threshold indicator operable by the patient to provide an indication of a pain threshold of the patient.4. The pressure wave therapy system of claim 3 , wherein the patient-specific treatment information stored in the memory includes a pain threshold of the patent determined during a previous treatment ...

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Номер записи: 55
24-06-2021 дата публикации

BIDIRECTIONAL AIR INLET VALVE ASSEMBLY

Номер: US20210187720A1
Автор: Billings Ross A., BIRKEL Andrew J., Patel Sandipkumar D.
Принадлежит:

In an improved air inlet valve assembly, a flow of air along a first or second flow path may be controlled by a position of air inlet guide surfaces of a rotatable valve relative to air inlet guide slots of a fixed valve sleeve. Air flowing along the first flow path may rotate a motor in a first direction to operate the tool in a forward mode. Air flowing along the second flow path may rotate the motor in the second direction to operate the tool in a reverse mode. In the forward mode, as air flows along the first flow path, air may be discharged along a primary discharge path, with a portion of the second flow path providing a secondary discharge path. In the reverse mode, as air flows along the second flow path, air may be discharged along the primary discharge path, with a portion of the first flow path providing the secondary discharge path. 1. A bidirectional air inlet valve assembly , comprising:an inlet valve, where in the air inlet vale sleeve has an angled surface to control air flow; a main inlet slot defined in a bottom portion of the valve sleeve;', 'a first inlet guide slot defined in a first side of the valve sleeve;', 'a second inlet guide slot defined in a second side of the valve sleeve;', 'a first discharge guide opening defined in the first side of the valve sleeve; and, 'an inlet valve sleeve, wherein the inlet valve has a plurality of different size apertures configured for directing air flow, and wherein the inlet valve sleeve includes;'}a second discharge guide opening defined in the second side of the valve sleeve; anda back cap, wherein the back cap has a plurality of air inlet ports adapted to receive air flow; a valve body;', 'a first inlet guide surface defined in a first side of the valve body;', 'a second inlet guide surface defined in a second side of the valve body; and, 'a valve rotatably received in the valve sleeve, the valve includinga discharge guide surface defined by a chamfer at a distal end portion of the valve body;and;a ...

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Номер записи: 56
30-05-2019 дата публикации

HYDRAULIC PERCUSSION DEVICE AND CONSTRUCTION APPARATUS HAVING THE SAME

Номер: US20190160642A1
Автор: JOO Jin Moo, LIM Hoon, PARK Yong Shik, YOON Bok Joong
Принадлежит:

The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve. 1. A percussion device that breaks an object , the device comprising:a cylinder for housing a piston;a piston for reciprocating in the cylinder;a backward port for connecting a front chamber being located at a front side of the cylinder to a hydraulic source;a forward port being formed in a rear chamber being located at a rear side of the cylinder;a forward-backward valve for controlling forward motion and backward motion of the piston by being positioned at one of a forward position for connecting the forward port to the hydraulic source and inducing the piston to move forward and a backward position for connecting the forward port to a hydraulic discharge line and inducing the piston to move backward;a control line for moving the forward-backward valve to the forward position when being connected to the hydraulic source;a long-stroke port for connecting the hydraulic source to the control line through the front chamber when the piston is moved backward to a first position, the long-stroke port ...

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Номер записи: 57
21-06-2018 дата публикации

Shoed Hydraulic Hammer Piston

Номер: US20180169849A1
Автор: Ellis Steven B.
Принадлежит: CATERPILLAR INC.

A piston for a hydraulic hammer assembly is provided. The piston may include an elongate member extending from a distal end to a proximal end and having a first outer diameter, a flange disposed on the elongate member and having a second outer diameter greater than the first outer diameter, and a non-ferrous shoe radially disposed on the flange. 1. A piston for a hydraulic hammer assembly , the piston comprising:an elongate member extending from a distal end to a proximal end and having a first outer diameter;a flange disposed on the elongate member and having a second outer diameter greater than the first outer diameter; anda non-ferrous shoe radially disposed on the flange.2. The piston of claim 1 , wherein the elongate member is configured to reciprocate within an inner diameter of a ferrous cylindrical chamber claim 1 , the non-ferrous shoe being composed of one or more arcuate members sized to sealably fit around the second outer diameter of the flange and within the inner diameter of the cylindrical chamber.3. The piston of claim 1 , wherein the non-ferrous shoe includes two or more arcuate members that are removably installed on the second outer diameter of the flange.4. The piston of claim 3 , wherein the arcuate members are coupled to one another using one or more removable fasteners.5. The piston of claim 1 , wherein the non-ferrous shoe has a third outer diameter greater than the second outer diameter.6. The piston of claim 1 , further comprising a second flange proximally disposed relative to the flange claim 1 , and a second non-ferrous shoe radially disposed on the second flange.7. The piston of claim 1 , wherein the non-ferrous shoe is permanently installed on the flange.8. The piston of claim 7 , wherein the non-ferrous shoe is applied on the second outer diameter of the flange using a liquid metal spray.9. A non-ferrous shoe for a hydraulic hammer piston claim 7 , the non-ferrous shoe comprising:at least two arcuate members formed of a non-ferrous ...

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Номер записи: 58
18-09-2014 дата публикации

HYDRAULIC HAMMER HAVING IMPACT SYSTEM SUBASSEMBLY

Номер: US20140262407A1
Автор: MOORE Cody
Принадлежит: CATERPILLAR INC.

An impact system for a hydraulic hammer is disclosed. The impact system may include a piston, a sleeve disposed co-axial with the piston, and an accumulator membrane disposed external to the sleeve. A first seal may be located at an end of the sleeve, and configured to connect the sleeve to the piston. The accumulator membrane may have an extension configured to engage a recess in the sleeve. 1. An impact system for a hydraulic hammer , the impact system comprising:a piston;a sleeve disposed co-axial with the piston;a first seal located at an end of the sleeve and configured to connect the sleeve to the piston; andan accumulator membrane disposed external to the sleeve and having an extension configured to engage a recess in the sleeve.2. The impact system of claim 1 , wherein the first seal is configured to generate a radial force on the sleeve and the piston after assembly that secures the sleeve to the piston.3. The impact system of claim 1 , wherein the extension is co-axial with the piston and oriented inwards towards the piston.4. The impact system of claim 1 , further including:a seal carrier disposed co-axial with the piston; anda second seal configured to connect the seal carrier to the piston.5. The impact system of claim 4 , wherein the second seal is configured to generate a radial force on the seal carrier and the piston after assembly that secures the seal carrier to the piston.6. The impact system of claim 5 , further including a valve trapped within a cavity formed between the seal carrier and the piston.7. The impact system of claim 6 , wherein the valve is disposed external to the accumulator membrane.8. The impact system of claim 6 , wherein the seal carrier and the sleeve overlap each other axially to form the cavity.9. The impact system of claim 8 , wherein:the seal carrier includes a female connector; andthe sleeve includes a male connector received by the female connector.10. The impact system of claim 1 , further including a sleeve liner ...

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Номер записи: 59
28-05-2020 дата публикации

SYSTEMS AND METHODS FOR MODULATING PRESSURE WAVE THERAPY

Номер: US20200163827A1
Автор: Hart Lotta
Принадлежит:

A processor-controlled, energy-based therapy apparatus includes a device configured to provide therapeutic energy to a patient and a processor that controls the output of the device. The output of the device is based on output profiles programmed into the processor. The output profiles include a therapeutic energy output profile and a ramp-up energy profile. The therapeutic energy output profile includes a desired target energy level and a therapeutic duration for controlling the output of the device during a therapeutic period. The ramp-up energy output profile includes an initial treatment energy level and a ramp-up duration for controlling the output of the device during a ramp-up period. The energy output specified by the ramp-up energy output profile incrementally increases over the ramp-up duration as a function of the desired target energy level and the ramp-up duration. 1. (canceled)2. (canceled)3. A pressure wave therapy system comprising:a pressure wave therapy device configured to deliver acoustic pulses to a patient;a user interface configured to receive an input; and control an energy output of the pressure wave therapy device based on a therapy profile;', 'provide a treatment according to the therapy profile by incrementally increasing the energy output over a ramp-up period as a function of a desired target energy level and a ramp-up duration;', 'receive, from a user interface, a user input to change a pressure wave therapy parameter during the ramp-up period;', 'automatically adjust a ramp-up energy output profile when the input to change the therapy parameter is received during the ramp-up period; and', 'provide a treatment based on the adjusted ramp-up energy output profile., 'a processor in communication with the pressure wave therapy device and the user input, the processor configured to4. The system of claim 3 , wherein the processor is further configured to automatically adjust the therapy profile to meet required criteria stored in a memory ...

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Номер записи: 60
13-06-2019 дата публикации

Power tool

Номер: US20190176313A1
Автор: Ian Webster
Принадлежит: Webster Technologies Ltd

A power tool is provided that includes a tool carrier for mounting an impact tool. The tool carrier has a base member aligned with an operational axis. The base member has a head end for receiving impact energy, a foot end provided with a tool mount configured to transmit the impact energy to the impact tool, and a casing engagement feature between the head end and foot end. A first casing module is provided with a tool carrier engagement feature complementary in shape to, and for interlocking engagement with, the tool carrier casing engagement feature to prevent rotation of the tool carrier relative to the first casing module around the operational axis, and permits relative movement between the tool carrier and the first casing module along the operational axis.

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Номер записи: 61
16-07-2015 дата публикации

Controlled Pivot Impact Tools

Номер: US20150196997A1
Автор: McClung Mark T.
Принадлежит:

Illustrative embodiments of controlled pivot impact tools are disclosed. In at least one illustrative embodiment, an impact tool may comprise a hammer configured to rotate about a first axis and to pivot about a second axis different from the first axis, where the hammer includes a cam groove formed in an outer surface of the hammer, an actuator coupled to the cam groove of the hammer and configured to pivot the hammer about the second axis between a disengaged position and an engaged position based on a position of the actuator along the cam groove, and an anvil configured to rotate about the first axis in response to being impacted by the hammer when the hammer is in the engaged position. 1. An impact tool comprising:a hammer configured to rotate about a first axis and to pivot about a second axis different from the first axis, the hammer including a cam groove formed in an outer surface of the hammer;an actuator coupled to the cam groove of the hammer and configured to pivot the hammer about the second axis between a disengaged position and an engaged position based on a position of the actuator along the cam groove; andan anvil configured to rotate about the first axis in response to being impacted by the hammer when the hammer is in the engaged position.2. The impact tool of claim 1 , further comprising a controller configured to:sense a rotational speed of the hammer about the first axis; andcause the actuator to pivot the hammer from the disengaged position, in which the hammer rotates about the first axis without impacting the anvil, to the engaged position, in which the hammer impacts the anvil, in response to the rotational speed of the hammer achieving a threshold rotational speed.3. The impact tool of claim 2 , wherein the controller is configured to cause the actuator to pivot the hammer from the engaged position to the disengaged position in response to the hammer impacting the anvil.4. The impact tool of claim 2 , wherein the controller is further ...

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Номер записи: 62
12-07-2018 дата публикации

Compact Impacting Apparatus

Номер: US20180193993A1
Автор: Christopher Pedicini, John Witzigreuter
Принадлежит: Tricord Solutions Inc

A compact impacting apparatus includes a spring anvil assembly with a spring, an anvil, and a barrel cam. A cam follower engages the barrel cam to energize the spring anvil assembly. The spring anvil assembly is thereafter released to impact a striker, which striker delivers impact force to an impact target. The spring anvil assembly may be biased in a starting operational position by the weight of the apparatus or the impact target. The spring anvil assembly may be disposed against a rotating pusher plate while engaged by the cam follower. Force of impact may be adjusted by repositioning the pusher plate and or changing the compression of the spring of the spring anvil assembly. The cam follower provides for repeated impacts upon the impact target and the striker holds the impact target in place for effective impacting.

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Номер записи: 63
19-07-2018 дата публикации

Shock Absorption Device for Pneumatic Tool

Номер: US20180200874A1
Автор: Lin Jhih Jhong
Принадлежит:

A device absorbs shock in a pneumatic tool containing a body, a cylinder, a valve unit, a piston member, plural buffer springs, and multiple fitting sleeves. The body includes a grip and a fitting sleeve fitted with the grip. The fitting sleeve has a chamber, a close face formed on a first end thereof, and an opening formed on a second end thereof. Each fitting sleeve is hollow and includes a limitation length forming along a hollow extending direction and shorter than a largest length. Multiple positioning sleeves are defined between a close face of the fitting sleeve and an abutting portion of the cylinder, and the multiple positioning sleeves are hollow so as to accommodate plural buffer springs. Because the limitation length is shorter than the largest length, the plural buffer springs extend out of the multiple positioning sleeves respectively. 1. A shock absorption device for a pneumatic tool , wherein a pneumatic tool comprises:a body including a grip and a fitting sleeve fitted with the grip, with the fitting sleeve having a chamber defined therein, a close face formed on a first end thereof, and an opening formed on a second end thereof;a cylinder slidably fixed in the chamber of the fitting sleeve and a part thereof extending out of the opening of the fitting sleeve, with the cylinder including a room defined therein and an abutting portion adjacent to the close face of the chamber of the fitting sleeve;a valve unit fixed between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the body and sliding forward and backward along a movement axis;plural buffer springs mounted in the chamber of the fitting sleeve and abutting against the close face of the chamber of the fitting sleeve and the abutting portion of the cylinder, wherein a pressing direction of each buffer spring is parallel to the movement axis of the piston member, and plural elastic supporting points form between the close face and the abutting portion ...

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Номер записи: 64
25-06-2020 дата публикации

INSERT BUSHING ARRANGEMENT, BREAKING HAMMER AND RELATED METHOD

Номер: US20200198111A1
Автор: NIEMIOJA Ossi, TOURUNEN Marko, TYNKKYNEN Esa
Принадлежит:

An insert bushing arrangement of a breaking hammer, a breaking hammer and a method of supporting a breaking tool of a breaking hammer is provided. The insert bushing arrangement includes a bearing support inside which an insert bushing is mountable. Between the bearing support and the insert bushing is one or more intermediate material layers for preventing jamming of the components. 1. An insert bushing arrangement of a breaking hammer comprising:an insert bushing mountable axially inside a bearing support, wherein an inner cylindrical surface of the insert bushing is arranged as a slide bearing surface against a breaking tool, which is movable relative to the insert bushing;an insert locking element configured to limit axial movement of the insert bushing relative to the bearing support; andan intermediate material layer disposed between opposing surfaces of the bearing support and the insert bushing.2. The insert bushing arrangement as claimed in claim 1 , wherein material of the intermediate material layer differs from materials of the bearing support and the insert bushing.3. The insert bushing arrangement as claimed in claim 1 , wherein the insert bushing includes a cylindrical intermediate element claim 1 , which is a separate element mountable between the bearing support and the insert bushing and is configured to serve as the intermediate material layer.4. The insert bushing arrangement as claimed in claim 3 , wherein a thickness of the intermediate material layer is at least 0.5 mm.5. The insert bushing arrangement as claimed in claim 3 , wherein the cylindrical intermediate element includes an axial groove extending end to end and radially through the element.6. The insert bushing arrangement as claimed in claim 3 , wherein the insert bushing includes at least two intermediate segment elements claim 3 , which are separate elements mountable between the bearing support and the insert bushing and are together configured to form a cylinder-like element and ...

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Номер записи: 65
05-08-2021 дата публикации

IMPACT TOOL

Номер: US20210237249A1
Автор: Brown Evan, Fischer Scott R., Sande Michael R.
Принадлежит:

An impact tool includes an electric motor and a housing containing the electric motor, the housing including a battery receptacle. The battery receptacle includes an isolation member configured to selectively and detachably couple to a battery pack to electrically connect the battery pack to the electric motor. The isolation member includes opposed rails configured to be received into sliding engagement with channels formed in the housing. The battery receptacle also includes an elastomeric damper supported within the housing. During operation of the impact tool, the isolation member is configured to translate relative to the housing and impact the elastomeric damper which, in turn, is configured to attenuate the transmission of vibration from the housing to the battery pack. 1. An impact tool comprising:an electric motor;a housing containing the electric motor; and an isolation member configured to selectively and detachably couple to a battery pack to electrically connect the battery pack to the electric motor, the isolation member including opposed rails configured to be received into sliding engagement with channels formed in the housing, and', 'an elastomeric damper supported within the housing;, 'a battery receptacle including'}wherein during operation of the impact tool, the isolation member is configured to translate relative to the housing and impact the elastomeric damper which, in turn, is configured to attenuate transmission of vibration from the housing to the battery pack.2. The impact tool of claim 1 , wherein the battery receptacle further includes a pair of friction members claim 1 , each friction member having a u-shaped cross-section and being coupled to a respective rail of the opposed rails.3. The impact tool of claim 1 , wherein the elastomeric damper is a first elastomeric damper claim 1 , and wherein the battery receptacle further includes a second elastomeric damper supported within the housing and configured to attenuate transmission of ...

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Номер записи: 66
12-08-2021 дата публикации

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

Номер: US20210245349A1
Автор: Sun Yung Yung
Принадлежит:

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear end into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. A sealed air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a rear end extending into the concave room, wherein the inner tube shell is provided with a movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall located at the rear end of the inner tube shell with an elastic supporting member abutting against the end wall, wherein a first sealing member is provided at the rear end to closely connect with the concave room to seal the air room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein a joint between the communicating channel and the ...

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Номер записи: 67
12-08-2021 дата публикации

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

Номер: US20210245350A1
Автор: Sun Yung Yung
Принадлежит:

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein the concave room extends in a first direction that is at an angle to ...

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Номер записи: 68
11-08-2016 дата публикации

LOWER BUFFER AND BUSHING PROTECTOR

Номер: US20160229044A1
Автор: Jagdale Rakesh, Juvonen Vaino Esko
Принадлежит: CATERPILLAR INC.

A protection assembly for a work implement includes an outer shield member and an inner shield member. The outer shield member is spaced from a housing of the work implement in a longitudinal direction and defines a channel. The channel extends to an exterior of the protection assembly. The inner shield member defines an opening and is slideably disposed in the channel. The inner shield member is free to slide in a transverse direction that is substantially perpendicular to the longitudinal direction. Movement of the inner shield member in the longitudinal direction is restricted by the housing of the work implement and the outer shield member. Movement of the inner shield member in the transverse direction is restricted by a work tool that is locked within and projects out of the housing and through the opening in the inner shield. 1. A protection assembly for a work implement that includes a housing , the protection assembly comprising:a first outer shield member spaced apart from the housing by a first distance along a longitudinal direction, the housing and the first outer shield member defining a channel therebetween, the channel extending in a transverse direction that is substantially perpendicular to the longitudinal direction, such that the channel extends to an exterior of the protection assembly,the first outer shield member having an outer concave edge that extends in a circumferential direction about a first axis that extends along the longitudinal direction; andan inner shield member slideably disposed in the channel, the inner shield member being free to slide along the channel in the transverse direction, the inner shield member having an internal edge and an external edge,the internal edge extending in the circumferential direction about a second axis that extends along the longitudinal direction, the internal edge defining an opening through the inner shield member, andthe internal edge of the inner shield member being disposed closer to the first ...

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Номер записи: 69
18-07-2019 дата публикации

Air Cannon

Номер: US20190217458A1
Автор: Henry William R.
Принадлежит: The Cannon Company LLC

A prior art powered wrist pin knocker is improved with a new plunger that prevents wobbling. The new plunger responds to a return vacuum pressure. The improved plunger is symmetrical along a longitudinal axis. New embodiments include a new side mount valve head to reduce length, a remote air controller and a variable length cylinder for the cannon. The new valve head is a simplified valve head assembly that adapts to an end of the cannon mount or a side mount or a remote mount. Another embodiment provides a stand for a surface mount application. This embodiment can have an extended piston for loosening tail bearings down a long channel. A manual return embodiment can use a rod to manually return the plunger to the proximal end for another firing cycle. 120-. (canceled)21. An air cannon comprising:a cannon barrel having opposing cannon barrel first and second ends, said cannon barrel second end configured to couple to a wrist pin;a plunger disposed within said cannon barrel;a valve assembly coupled to said cannon barrel first end; a first position configured to direct compressed air into said cannon barrel first end to urge said plunger toward said cannon barrel second end; and', 'a second position configured to create a vacuum to retract said plunger toward said cannon barrel first end., 'said valve assembly comprising22. The air cannon of claim 21 , wherein movement of said plunger is remotely controlled.23. The air cannon of claim 22 , said valve assembly removed from said cannon barrel to provide a remote controller for said air cannon.24. The air cannon of claim 22 , said valve assembly remotely controlled.25. The air cannon of claim 21 , said plunger symmetrical about a vertical centerline.26. The air cannon of claim 21 , said plunger symmetrical about a horizontal centerline and a vertical centerline.27. The air cannon of claim 21 , said plunger comprising at least one channel recessed within a plunger external surface claim 21 , said channel disposed ...

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Номер записи: 70
30-10-2014 дата публикации

Motors with Magnetic Components

Номер: US20140318820A1
Автор: Cox Daniel S., Liang Davey Z.
Принадлежит: Shining Golden Yida Welding & Cutting Machinery Manufacture, Ltd.

Disclosed are methods and devices utilizing magnetized components to assist operation of an internal mechanism of a tool. Magnetic fields can assist a power tool comprising internal mechanisms that cycle very quickly. Magnetized components can assist in a load/reset action relative to internal components of the power tool. In one example, one or more hammers of a hammer drill/driver can be reset more efficiently when various magnetized elements are oriented in certain ways relative to one another. Additionally, friction between components can be reduced by repulsive magnetic fields between two or more components. Utilizing the magnetic fields can improve the overall function of internal components of the tool. In another example, a tool such as a nailer or stapler can utilize magnetism to assist its internal components. In a nailer or stapler the magnetism can assist, for example, acceleration and deceleration of components utilized to drive the nail/staple. 1. A hammer assembly for a motorized tool , comprising:a cage configured to be rotatingly driven by a rotor of the motorized tool;a first hammer pivotally seated in the cage, the first hammer comprising a first center aperture, a first strike tooth, and a first reload tooth;a first pin and a second pin both seated in the cage, the first pin configured to serve as a pivot about which the first hammer pivots and the second pin comprising a first end portion configured to limit motion of the first hammer; anda drive shaft extending through the first center aperture of the first hammer and configured to be rotatingly driven by the rotor of the motorized tool, the drive shaft including a first anvil configured for being struck by the first strike tooth upon forward rotation of the rotor;wherein the first hammer and the second pin comprise a magnetic material, a south magnetic pole, and a north magnetic pole,wherein the first hammer and the second pin are seated in the cage such that the north magnetic pole of the ...

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Номер записи: 71
16-07-2020 дата публикации

IMPACT TOOL

Номер: US20200223256A1
Автор: BORSETTO Emanuele, GALLONI Federico, PAOLI Patrizia
Принадлежит:

An impact tool comprises: 1. Impact tool comprising:a casing;a rotating hammer arranged in said casing and rotatable by a motor;a rotating interface element arranged in said casing and rotatable by said hammer by a series of impacts;an output shaft rotating around a rotation axis, said output shaft having a proximal end fixed to said interface element and a distal end protruding from said casing, said distal end ending with a connecting element for removable connection to an outer mechanical adaptor;a unit of measurement arranged for obtaining a torque of said output shaft by a torque sensor mounted to said output shaft, said unit of measurement comprising a fixed measuring assembly mounted integrally to said casing and a rotating measuring assembly mounted so as to rotate integrally with said rotating output shaft;said fixed measuring assembly being configured to generate a supply signal and transmit said supply signal to said rotating measuring assembly to supply electrically said rotating measuring assembly;said rotating measuring assembly being configured to detect a measuring signal indicating said torque and condition said measuring signal in order to be able to send the measuring signal to said fixed measuring assembly;wherein said fixed measuring assembly and said rotating measuring assembly comprise electronic devices that carry out a two-directional communication in contactless mode by a magnetic coupling between said fixed measuring assembly and said rotating measuring assembly, said communication being configured to supply magnetically said torque sensor and permit transmission of said measuring signal conditioned by said rotating measuring assembly to said fixed measuring assembly.2. Impact tool according to claim 1 , wherein said magnetic coupling is resonant.3. Impact tool according to claim 1 , wherein said fixed measuring assembly comprises a fixed electronic module provided with a microprocessor suitable for generating said supply signal claim 1 , ...

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Номер записи: 72
13-11-2014 дата публикации

DAMPER SYSTEM FOR A POWER CELL OF A HYDRAULIC HAMMER

Номер: US20140332246A1
Автор: Gunasekaran Jayaram, Jacob Colins, MOORE Cody, Palanoor Arun
Принадлежит: CATERPILLAR INC.

A damper system for a power cell includes a single-piece top damper element disposed on the power cell, a pair of middle damper elements disposed about a mid-portion of the power cell, and a single-piece bottom damper element that is formed from a material having Shore hardness in the range of about 90 A to 95 A. The middle damper elements are mutually identical in construction, and include interlocking features that are configured to allow a releasable engagement therebetween. The bottom damper element defines a central opening therein, and includes a base plate disposed about the central opening. The bottom damper element further includes appendages extending axially from a top side of the base plate, and a lateral projection extending radially inward from each of the appendages. The lateral projection is configured to abut a top side of a keel member defined at a bottom portion of the power cell. 1a single-piece top damper element configured to be disposed on the power cell;a pair of middle damper elements disposed about a mid-portion of the power cell, wherein the pair of middle damper elements are mutually identical in construction, and wherein each of the middle damper elements include interlocking features at lateral ends thereof, the interlocking features are configured to allow a releasable engagement of the middle damper elements; and a base plate disposed about the central opening, the base plate configured to bear the power cell thereon;', 'a plurality of appendages extending axially upwards from a periphery of the base plate and disposed about the central opening; and', 'a lateral projection extending radially inward from each of the plurality of appendages, the lateral projection configured to abut a top side of a keel member defined at a bottom portion of the power cell., 'a single-piece bottom damper element formed from a material having Shore hardness in the range of about 90 A to 95 A, the single-piece bottom damper element defining a central ...

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Номер записи: 73
10-09-2015 дата публикации

SEALING DEVICE FOR A HYDRAULIC PERCUSSION APPARATUS, AND HYDRAULIC PERCUSSION APPARATUS COMPRISING SUCH A SEALING DEVICE

Номер: US20150251304A1
Автор: Escolle Michel
Принадлежит: MONTABERT

The sealing device includes an inner sealing ring including an annular inner sealing portion provided with a sealing lip intended to cooperate in a sealed manner with the outer surface of a striking piston of a hydraulic percussion apparatus, and an outer sealing element mounted around the inner sealing portion and intended to bear in a sealed manner at the bottom of an annular housing arranged on a guide body of the hydraulic percussion apparatus. The inner sealing ring further includes an annular protective portion axially shifted relative to the inner sealing portion and internally delimited by at least one converging protective surface, annular and converging towards the sealing lip, and an annular groove opening into the inside the inner sealing ring, the annular groove being disposed between the sealing lip and the converging protective surface. 2. The sealing device according to claim 1 , wherein the converging protective surface extends from an end of the inner sealing ring.3. The sealing device according to claim 1 , wherein the protective portion is further internally delimited by at least one diverging protective surface claim 1 , annular and diverging towards the sealing lip claim 1 , the diverging protective surface being disposed between the converging protective surface and the sealing lip claim 1 , and delimiting at least partially the annular groove.4. The sealing device according to claim 1 , wherein the converging protective surface and/or the diverging protective surface are substantially truncated cone-shaped.5. The sealing device according to claim 1 , wherein the protective portion is further internally delimited by at least one intermediate protective surface claim 1 , substantially cylindrical and disposed between the converging protective surface and the annular groove.6. The sealing device according to claim 5 , wherein the intermediate protective surface is disposed between the converging protective surface and the diverging protective ...

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Номер записи: 74
01-08-2019 дата публикации

PERCUSSION TOOL

Номер: US20190232478A1
Автор: Van Hoorn Andrew D., Zawisza Matthew S., Zimany Ethan T.
Принадлежит:

A percussion tool comprises a housing, an electric motor positioned within the housing, a percussion mechanism driven by the electric motor and including a striker supported for reciprocation in the housing, a battery pack removably coupled to the housing for providing power to the electric motor when coupled to the housing, and an electronic controller including an electronic processor and a memory. The electronic controller is coupled to the electric motor and configured to activate the motor and determine whether the percussion tool is in a loaded condition. In response to determining that the percussion tool is in the loaded condition, the electronic controller is configured to operate the motor in accordance with a predetermined profile and in response to determining that the percussion tool is in a no load condition, the electronic controller is configured to operate the motor at a no-load speed. 1. A percussion tool comprising:a housing;an electric motor positioned within the housing;a percussion mechanism driven by the electric motor and including a striker supported for reciprocation in the housing;a battery pack removably coupled to the housing for providing power to the electric motor when coupled to the housing; and activate the motor,', 'determine whether the percussion tool is in a loaded condition,', 'in response to determining that the percussion tool is in the loaded condition, operate the motor in accordance with a predetermined profile, and', 'in response to determining that the percussion tool is in a no load condition, operate the motor at a no-load speed., 'an electronic controller including an electronic processor and a memory, the electronic controller coupled to the electric motor and configured to'}2. The percussion tool of claim 1 , further comprising a rotational speed sensor for detecting a motor speed.3. The percussion tool of claim 2 , wherein while in the loaded condition claim 2 , the electronic processor is further configured to: ...

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Номер записи: 75
01-09-2016 дата публикации

LOW-NOISE HYDRAULIC HAMMER

Номер: US20160250739A1
Автор: KIM Sung Kew
Принадлежит: S.M METAL CO., LTD.

The present invention relates to a hydraulic hammer, and more specifically, to a low-noise hydraulic hammer, wherein an impact bar that is accommodated inside of a piston is inclined so as not to contact the inside of the piston thereby preventing cracks, and a noise insulating material or a heat sink is installed inside the piston or outside the impact bar, thereby reducing noise and improving heat radiation performance. 1. A low-noise hydraulic hammer comprising:{'b': 200', '300', '120', '100, 'an impact bar () formed in a striking part () and inserted into a receiving part () in a piston (),'}{'b': 120', '120', '200, 'wherein both inner lateral sides of the receiving part () are inclinedly formed such that a diameter of the receiving part () is increased toward the impact bar (), and'}{'b': 200', '120', '100', '120', '120, 'the impact bar () is received in the receiving part () to make contact with the piston (), formed with a diameter reduced toward the receiving part (), and spaced apart from the both inner lateral sides of the receiving part () by a specific distance.'}2130120200200140. The low-noise hydraulic hammer of claim 1 , wherein a contact part () serving as a bottom surface of the receiving part () and making contact with the impact bar () protrudes toward the impact bar () by a predetermined height claim 1 , and is formed at both sides thereof with buffer grooves () curved with a predetermined curvature.3120160. The low-noise hydraulic hammer of claim 1 , wherein the receiving part () is provided on one lateral side thereof with a noise insulating material ().4200220. The low-noise hydraulic hammer of claim 1 , wherein the impact bar () is formed on an outer lateral side thereof with a plurality of steps () for attenuation of noise.5230200110100110130120200aa. The low-noise hydraulic hammer of claim 2 , wherein a contact surface () serving as an outer surface of the impact bar () and facing a bottom surface () of the piston () is formed to be spaced ...

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Номер записи: 76
20-11-2014 дата публикации

Impact Wrench Anvil

Номер: US20140338943A1
Автор: Bothmann Rich D.
Принадлежит: Snap-on Incorporated

An anvil is disclosed having wings with additional surface area compared to prior art impact wrench anvils. The wings engage respective hammers in a radial direction, and overlap with one another in an axial direction across the interface between the two hammers. The hammers can each include a recess so that one wing does not engage the hammer associated with the other wing. In an embodiment, the surface of the wing can be angled to increase the amount of material extending over the hammer interface. 1. A tool for applying an impact force to a work piece , the tool comprising:an anvil having a shaft extending in an axial direction and rotatable in a radial direction;first and second hammers each adapted to rotate about the shaft and being disposed proximate one another along a hammer interface; andfirst and second wings laterally disposed on the shaft and extending in the axial direction, the first and second wings overlapping one another in the axial direction across the hammer interface to define respective first and second overlapping portions,wherein the first and second hammers each defines a recess adapted to receive the first and second overlapping portions, respectively, during rotation of the first and second hammers.2. The tool of claim 1 , wherein the first and second overlapping portions include respective first and second surfaces that are slanted relative to the shaft.3. The tool of claim 1 , wherein the first and second overlapping portions include respective first and second surfaces that are orthogonal relative to the shaft.4. The tool of claim 1 , further comprising a circumferential flange disposed around the shaft claim 1 , wherein the first wing extends axially from the flange along the shaft.5. The tool of claim 1 , wherein the second wing extends axially from the second end along the shaft.6. The tool of claim 1 , further comprising an impact head disposed proximate the first end and adapted to provide the impact force to the work piece.7. An ...

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Номер записи: 77
27-11-2014 дата публикации

HAMMERING DEVICE

Номер: US20140345896A1
Автор: Raunisto Yrjo
Принадлежит:

Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body (), () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped, first chamber space () wherein the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element (), () the flow of hydraulic pressure is blocked to the first chamber space () and the access for pressure fluid is allowed away from the first chamber space () with the help of the valve (). In order to remove the pressure fluid fast from the first chamber space () the ring-shaped, second chamber space () is adjusted to be an extension for the first chamber space () and a ring-shaped valve () which comprises a closing ring is adjusted between the mentioned chamber spaces (), () the port of which valve is formed of a group of holes which holes are located in the mentioned closing ring. 11619363133527662676267672673. Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body () , () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped , first chamber space () in which case the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element () , ...

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Номер записи: 78
15-08-2019 дата публикации

ANVIL FOR AN IMPACT WRENCH

Номер: US20190247985A1
Автор: HU Guang, Xu Wei Chao
Принадлежит:

An anvil for use with an impact wrench includes a first end, a second end opposite the first end, a shank adjacent the first end, and a head adjacent the second end. The shank includes a diameter and an outer cylindrical surface that defines a longitudinal axis that extends centrally through the anvil between the first end and the second end. The head includes a plurality of planar faces and an outer cylindrical surface. The outer cylindrical surface defines a diameter of the head. A ratio between the diameter of the shank and the diameter of the head is between approximately 1:1 and approximately 1.35:1. 1. An impact wrench comprising:a housing;a motor supported by the housing;an actuator operable to selectively energize the motor;a gear assembly coupled to the motor; anda drive assembly coupled to the gear assembly, the drive assembly operable to convert a continuous rotational force provided by the gear assembly to a striking rotational force; a first end,', 'a second end opposite the first end,', 'a shank proximate the first end, the shank having a diameter and an outer cylindrical surface that defines a longitudinal axis that extends centrally through the anvil between the first end and the second end, and', 'a head proximate the second end, the head including a plurality of planar faces and an outer cylindrical surface, the outer cylindrical surface defining a diameter of the head;, 'wherein the drive assembly includes an anvil to which the striking rotational force is applied, wherein the anvil comprises'}wherein a ratio between the diameter of the shank and the diameter of the head is between approximately 1:1 and approximately 1.35:1.2. The impact wrench of claim 1 , wherein the diameter of the shank is less than 16 mm.3. The impact wrench of claim 1 , wherein each of the planar surfaces has a width of 0.375 inches.4. The impact wrench of claim 3 , wherein the diameter of the shank is 13.2 mm claim 3 , and wherein the diameter of the head is 12.6 mm.5. The ...

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Номер записи: 79
01-10-2015 дата публикации

OPTIMIZED PNEUMATIC HAMMER

Номер: US20150273676A1
Автор: Spektor Michael B.
Принадлежит:

The optimized pneumatic hammer is characterized by maximum performance efficiency that is achieved due to author's analytical investigations which revealed the existence of the optimal value of the striker's length with respect to maximum kinetic energy of the tool. On the contrary to the existing hammers, in the optimized hammers the length of the strikers is shorter than their strokes. Calculations based on the mentioned investigation show that the kinetic energy of optimized hammers could be about 2.5 times higher than of their existing counterparts. The optimized pneumatic hammer has two modes of operation—the regular mode of operation during which the tool interacts with the target media and the retracting mode of operation for releasing the severely jammed tool from the media. Optimized pneumatic hammers allow for a considerable decrease of their weight and diameters without compromising their performance while making easier the work of the operators. 1. An optimized pneumatic hammer characterized by the maximum kinetic energy of its tool and by the ability of working in a regular mode of operation during which said tool interacts with the target media or in a retracting mode of operation during which said tool is released from being jammed by the media and comprising:a tubular housing assembly including a tubular housing that accommodates the basic assemblies and components of said optimized pneumatic hammer, a rigidly attached to the lateral surface of said tubular housing longitudinal structural shape creating a longitudinal air passage allowing the compressed air to communicate between the rear and front ends of said tubular housing, and means for handling said optimized pneumatic hammer by an operator or mechanical arm;an air control valve chest assembly including an air control valve chest rigidly secured into the rear end of said tubular housing and having air passages allowing the compressed air that is needed for the operation of said optimized hammer ...

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Номер записи: 80
22-09-2016 дата публикации

Fixing Structure for Cylinder

Номер: US20160271778A1
Автор: Hsieh Chih Kuan
Принадлежит:

A fixing structure for a cylinder is employed to a pneumatic tool, and the pneumatic tool contains: a body, a valve unit, a cylinder, a piston member, and at least one positioning element. The body includes a cylindrical portion and a grip, the cylindrical portion has a chamber with an opening, and the cylindrical portion has at least one orifice. The valve unit is mounted in the chamber, and the cylinder is secured in the chamber to contact with the valve unit and includes a room and at least one locking notch. The piston member is placed into the room to push high pressure air to flow along the room. The at least one positioning element is inserted into each orifice of the cylindrical portion, such that a part of each positioning element retains with each locking notch, thus fixing the cylinder with the cylindrical portion. 1. A fixing structure for a cylinder being employed to a pneumatic tool , and the pneumatic tool comprising:a body including a horizontally cylindrical portion and a grip connecting with the cylindrical portion, the cylindrical portion having a chamber with an opening formed on a front end of the chamber, the cylindrical portion having at least one orifice passing through one side of the cylindrical portion and communicating with the chamber;a valve unit mounted in the chamber, and high pressure air flowing toward the valve unit via the body;a cylinder secured in the chamber to contact with the valve unit, and the cylinder including a room defined therein and at least one locking notch formed thereon, wherein each locking notch corresponds to each orifice and does not pass through the room;a piston member placed into the room of the cylinder, and the valve unit pushing the high pressure air to flow along the room forward and backward; andat least one positioning element inserted into each orifice of the cylindrical portion of the body, such that a part of each of the at least one positioning element retains with each locking notch of the ...

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Номер записи: 81
22-09-2016 дата публикации

Shock Absorption Device for Pneumatic Tool

Номер: US20160271780A1
Автор: Lin Jhih Jhong
Принадлежит:

A shock absorption device for a pneumatic tool, wherein a pneumatic tool contains: a body, a cylinder, a valve unit, and a piston member. The body includes a grip and a fitting sleeve fitted with the grip, wherein the fitting sleeve has a chamber, a close face formed on a first end thereof, and an opening formed on a second end thereof. The cylinder slidably is fixed in the chamber and a part thereof extends out of the opening, the cylinder includes a room and an abutting portion adjacent to the close face. The valve unit is fixed between the room and the abutting portion of the cylinder. The piston member is accommodated in the room and slides forward and backward along a movement axis. Plural buffer springs are mounted in the chamber and abut against the close face of the fitting sleeve and the abutting portion of the cylinder. 1. A shock absorption device for a pneumatic tool , wherein a pneumatic tool comprises:a body including a grip and a fitting sleeve fitted with the grip, the fitting sleeve having a chamber defined therein, a close face formed on a first end thereof, and an opening formed on a second end thereof;a cylinder slidably fixed in the chamber of the fitting sleeve and a part thereof extending out of the opening of the fitting sleeve, the cylinder including a room defined therein and an abutting portion adjacent to the close face of the chamber of the fitting sleeve;a valve unit fixed between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the body and sliding forward and backward along a movement axis; plural buffer springs mounted in the chamber of the fitting sleeve and abutting against the close face of the chamber of the fitting sleeve and the abutting portion of the cylinder, wherein a pressing direction of each buffer spring is parallel to the movement axis of the piston member, and plural elastic supporting points form between the close face and the abutting portion.2. The shock absorption ...

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Номер записи: 82
29-09-2016 дата публикации

Portable Power Tool

Номер: US20160279778A1
Автор: KAPS Helene, KEITH Matthias, KIESEL Theo, Koch Olaf
Принадлежит: Hilti Aktiengesellschaft

A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing. 16.-. (canceled)7. A portable power tool , comprising:a tool holder, wherein a tool is insertable into the tool holder on a working axis;a striker that is coupled via a pneumatic chamber to an exciter which is periodically moveable along the working axis;an intermediate striker disposed in a striking direction downstream from the striker, wherein the intermediate striker is guided in a slide bearing with a tolerance and wherein the intermediate striker has a bead;a backstop which is disposed in the striking direction upstream from the bead; anda slide surface in which the backstop is moveably guided with a radial play;wherein the radial play is at least three times as large as the tolerance.8. The portable power tool according to claim 7 , wherein a mass of the backstop is between 20% and 40% of a mass of the intermediate striker.9. The portable power tool according to claim 7 , wherein the backstop is supported in a direction that is opposite from the striking direction on a first damping element.10. The portable power tool according to claim 9 , wherein the backstop is disposed between the first damping element and a second damping element that is disposed in ...

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Номер записи: 83
28-09-2017 дата публикации

HYDRAULIC BREAKER

Номер: US20170274516A1
Автор: JEON Sung Wook
Принадлежит:

The present invention relates to a hydraulic breaker comprising: a back head having a gas chamber provided therein; a cylinder disposed at the lower part of the back head, and having a hydraulic passage and a hydraulic space; a front head disposed at the lower part of the cylinder; a chisel provided inside the front head; a piston provided to reciprocate in the cylinder so as to hit the chisel; and a breaker main body having a plurality of penetration bolts integrally connecting the back head, the cylinder, and the front head, wherein the back head of the breaker main body is provided with a control valve for supplying and blocking hydraulic pressure to/from the hydraulic passage and the hydraulic space. 1. A hydraulic breaker comprising a breaker main body comprising:a back head provided with a gas chamber therein;a cylinder positioned below the back head and provided with a hydraulic path and a hydraulic space;a front head positioned below the cylinder;a chisel installed inside the front head;a piston reciprocally movably installed in the cylinder so as to strike the chisel; anda plurality of through bolts connecting the back head to the cylinder to the front head,wherein the back head of the breaker main body is provided with a control valve to supply hydraulic pressure to the hydraulic path and the hydraulic space and block the supply.2. The hydraulic breaker according to claim 1 ,wherein the cylinder is provided, on an outer side thereof, with an accumulator to smooth flow of a fluid through the hydraulic path.3. The hydraulic breaker according to claim 1 , wherein the hydraulic breaker comprises:a bracket surrounding and supporting the breaker main body and installed at an excavator, a lower end portion of the breaker main body inserted into the bracket being fixed to the bracket by a fixing member, and three remaining surfaces except for a front surface of an upper end portion of the breaker main body being supported by the bracket by a fixing pad;a stopper ...

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Номер записи: 84
15-10-2015 дата публикации

POWER TOOL

Номер: US20150290789A1
Автор: Cehajic Damir, DIEING Christoph, ONTL Rainer, Rehekampff Christian
Принадлежит: Hilti Aktiengesellschaft

A hand-held power tool is disclosed. The tool has a tool receptacle for holding a chiseling tool. A pneumatic percussion mechanism of the hand-held power tool includes a striker, an exciter and a guide tube. The striker is designed to apply impacts in the impact direction to the tool. The exciter is motor-driven. The striker is coupled by an air spring to the reciprocating movement of the exciter. The striker abutting the guide tube is guided along a working axis. During a movement between an impact position and the exciter, the striker is guided with a constant guide length on the guide tube and if the impact position is exceeded in the impact direction, the guide length is reduced. The hand-held power tool is equipped with an inclined guide, which inclines the striker relative to the working axis when the impact position is exceeded. 16.-. (canceled)7. A hand-held power tool , comprising:a tool receptacle for holding a chiseling tool; anda pneumatic percussion mechanism including a striker for applying impacts in an impact direction to the chiseling tool, a motor-driven exciter, wherein the striker is coupled by an air spring to reciprocating movement of the exciter, and a guide tube which the striker abuts when guided along a working axis;wherein the striker is guided during a movement between an impact position and the exciter with a guide length on the guide tube, wherein the guide length is reduced if the impact position is exceeded in the impact direction, and wherein the striker is guided with a sloped guide after exceeding the impact position and which inclines the striker relative to the working axis.8. The hand-held power tool according to further comprising venting ports claim 7 , wherein the air spring is ventable by the venting ports claim 7 , and wherein the venting ports are only opened when the striker moves in the impact direction beyond the impact position.9. The hand-held power tool according to claim 7 , wherein the sloped guide has a radial ...

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Номер записи: 85
05-09-2019 дата публикации

Pneumatic tool

Номер: US20190270190A1
Автор: Hiroshi Tanaka
Принадлежит: Max Co Ltd

A pneumatic tool includes: a drive mechanism which is configured to be driven by compressed air of a first pressure: and a valve mechanism which is configured to be actuated by compressed air of a second pressure, which is higher than an atmospheric pressure and lower than the first pressure, and which is configured to switch whether or not to supply the compressed air of the first pressure to the drive mechanism.

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Номер записи: 86
06-10-2016 дата публикации

HYDRAULIC HAMMER HAVING SELF-CONTAINED GAS SPRING

Номер: US20160288306A1
Автор: II Lauritz Phillip, Pillers
Принадлежит: CATERPILLAR INC.

A gas spring is disclosed for use with a hammer. The gas spring may have a body with a central axis, and a bore aligned with the central axis and extending to at least one open axial end of the body. The gas spring may also have a plurality of gas chambers fully enclosed by the body and isolated from each other. The bore may have a flexible annular wall in communication with the plurality of gas chambers. 1. A gas spring , comprising:a body having a central axis and a bore aligned with the central axis and extending to at least one open axial end of the body; anda plurality of gas chambers fully enclosed by the body and isolated from each other,wherein the bore has a flexible annular wall in communication with the plurality of gas chambers.2. The gas spring of claim 1 , wherein the bore extends to two opposing axial ends of the body.3. The gas spring of claim 1 , wherein the body is a monolithic structure formed as a single component by a 3-D printing process in an atmosphere of gas claim 1 , a portion of which is to be entombed in the plurality of gas chambers.4. The gas spring of claim 1 , wherein at least one of the plurality of gas chambers has a toroidal shape.5. The gas spring of claim 1 , wherein at least one of the plurality of gas chambers has a square cross-section.6. The gas spring of claim 1 , wherein at least of the plurality of gas chambers has a rounded cross-section.7. The gas spring of claim 1 , wherein each of the plurality of gas chambers is located at a different location along the central axis of the body.8. The gas spring of claim 1 , wherein each of the plurality of gas chambers is located at a different radial location around the central axis of the body.9. The gas spring of claim 1 , wherein each of the plurality of gas chambers extends in a lengthwise direction generally parallel with the axis of the body.10. The gas spring of claim 1 , wherein at least of the plurality of gas chambers has a trapezoidal cross-section.11. The gas spring of ...

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Номер записи: 87
12-09-2019 дата публикации

KEY LOCKING STUD INSTALLATION TOOL

Номер: US20190275652A1
Автор: Tucker Ricky D., Welch Derek T.
Принадлежит:

A tool for installing a stud having a plurality of locking keys into a workpiece bore includes a main body, an actuator within the main body, a nosepiece adjacent the main body and having an anvil portion, and a mandrel disposed within the nosepiece. The actuator includes a movable piston, a shaft extending axially from the piston, and a coupler on a shaft end opposite the piston. The mandrel includes a threaded head portion and a body portion, and is releasably secured to the coupler. 1. A tool for installing a stud having a plurality of locking keys into a workpiece bore , the tool comprising:a main body; a movable piston;', 'a shaft extending axially from the piston; and', 'a coupler on a shaft end opposite the piston;, 'an actuator within the main body, the actuator comprisinga nosepiece adjacent the main body and having an anvil portion; and a threaded head portion; and', 'a body portion;, 'a mandrel disposed within with the nosepiece, the mandrel comprisingwherein the mandrel is releasably secured to the coupler.2. The tool of claim 1 , wherein the coupler is a female coupler comprising a spring-biased release sleeve.3. The tool of claim 1 , wherein the coupler of claim 1 , wherein the female coupler further comprises a locking member.4. The tool of claim 3 , wherein the mandrel body portion comprises a necked-down region.5. The tool of claim 4 , wherein a shape of the necked-down region corresponds to a shape of the locking member.6. The tool of claim 2 , wherein the release sleeve has a first position allowing a radial movement of locking member and a second position blocking said movement.7. The tool of claim 6 , wherein the coupler further comprises a lever extending through a nosepiece slot to permit an operator to move the lever to shift the release sleeve from the second position to the first position.8. The tool of claim 6 , wherein the mandrel is freely rotatable about an axis of the tool when the release sleeve is in the second position.9. The tool ...

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Номер записи: 88
12-10-2017 дата публикации

HYDRAULIC HAMMER ASSEMBLY

Номер: US20170291290A1
Автор: Grzybowski Joshua, MOORE Cody
Принадлежит: CATERPILLAR INC.

A hydraulic hammer assembly is provided. The hydraulic hammer assembly includes a housing and a piston is arranged for reciprocating movement along a longitudinal axis within the housing. A head disposed along the longitudinal axis on an end of the housing and defines a chamber for holding a pressurized gas. The hydraulic hammer assembly further includes a locking mechanism to lock the head on the housing. The locking mechanism includes at least one first flange extending radially from the end of the housing and at least one second flange extending radially from the head, wherein the head is retained on the housing by blocking axial movement of the second flange against the first flange when in a locked position. 1. A hydraulic hammer assembly comprising:a housing;a piston arranged for reciprocating movement along a longitudinal axis within the housing;a head disposed along the longitudinal axis on an end of the housing and defining a chamber for holding a pressurized gas; and at least one first flange extending radially from the end of the housing;', 'at least one second flange extending radially from the head;', 'wherein the head is retained on the housing by blocking axial movement of the second flange against the first flange when in a locked position., 'a locking mechanism to lock the head on the housing, the locking mechanism comprising2. The hydraulic hammer assembly of claim 1 , the hydraulic hammer assembly further comprising:a biasing member disposed between the head and the housing, the biasing member configured to bias the second flange along the longitudinal axis into contact with the first flange.3. The hydraulic hammer assembly of claim 1 , wherein the housing defines an opening adjacent to the first flange to receive the second flange in the end of the housing through the opening in an unlocked position.4. The hydraulic hammer assembly of claim 1 , wherein the first flange extends radially inwards from the end of the housing and the second flange ...

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Номер записи: 89
26-09-2019 дата публикации

WORK TOOL

Номер: US20190291255A1
Автор: HISANO Taro, MACHIDA Yoshitaka, Yamamoto Hirokatsu, YOSHIKANE Kiyonobu
Принадлежит: MAKITA CORPORATION

A work tool includes a motor, a driving mechanism, a housing, a handle, a detecting mechanism and an elastic support part. The detecting mechanism is configured to detect information corresponding to an operating state of the work tool. The elastic support part supports the detecting mechanism so as to be movable relative to the housing in at least two of a front-rear direction, an up-down direction and a left-right direction. The elastic support part includes at least one elastic member disposed between the detecting mechanism and the housing. The elastic support part has respectively different spring constants in the at least two directions. 1. A work tool configured to perform an operation on a workpiece by driving a tool accessory , the work tool comprising:a motor;a driving mechanism configured to perform at least a hammering operation of linearly driving the tool accessory along a drive axis by power of the motor, the drive axis extending in a front-rear direction of the work tool;a housing that houses at least the motor and the driving mechanism;a handle connected to the housing, the handle including a grip part, the grip part crossing the drive axis and extending in an up-down direction orthogonal to the front-rear direction;a detecting mechanism configured to detect information corresponding to an operating state of the work tool; andan elastic support part supporting the detecting mechanism so as to be movable relative to the housing in at least two of the front-rear direction, the up-down direction and a left-right direction, which is orthogonal to the front-rear direction and the up-down direction, the elastic support part including at least one elastic member disposed between the detecting mechanism and the housing,wherein the elastic support part has respectively different spring constants in the at least two directions.2. The work tool as defined in claim 1 , wherein the two directions are the front-rear direction and the left-right direction.3. The ...

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Номер записи: 90
27-10-2016 дата публикации

Single-shot type air hammer tool and method of adjusting striking force thereof

Номер: US20160311104A1
Автор: Shuya ASANO, Yukio Watanabe
Принадлежит: Apuren Co Ltd

A partially-removed ring body is arranged at the predetermined position facing the hammer in a stop position of the cylinder, and a part of the partially-removed ring body protrudes toward the inside of the cylinder. In addition, a recessed groove is formed in the position corresponding to the partially-removed ring body of the hammer at the stop position, and the recessed groove catches the partially-removed ring body, and thus the hammer is positioned at the stop position in the cylinder.

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Номер записи: 91
27-10-2016 дата публикации

HAMMER HAVING COMPOSITE PISTON SLEEVE

Номер: US20160312892A1
Автор: Moore Cody T.
Принадлежит: CATERPILLAR INC.

A sleeve is disclosed for use with a piston of a hydraulic hammer. The sleeve may have a generally cylindrical body with a top end and a bottom end, and a central bore passing axially from the top end of the generally cylindrical body to the bottom end. The generally cylindrical body may be a composite structure including a guide layer forming an inner annular surface of the central bore, an energizer layer located radially outward of the guide layer and being bonded to the guide layer, and a support layer bonded to the energizer layer. The support layer may form an outer surface of the generally cylindrical body. 1. A sleeve for a piston of a hydraulic hammer , the sleeve comprising:a generally cylindrical body having a top end and a bottom end; anda central bore passing axially from the top end of the generally cylindrical body to the bottom end; a guide layer forming an inner annular surface of the central bore;', 'an energizer layer located radially outward of the guide layer and being bonded to the guide layer; and', 'a support layer bonded to the energizer layer and forming an outer surface of the generally cylindrical body., 'wherein the generally cylindrical body is a composite structure including2. The sleeve of claim 1 , wherein the energizer layer surrounds and compresses the guide layer inward.3. The sleeve of claim 1 , further including a valve chamber formed in the top end of the sleeve claim 1 , wherein:the guide and energizer layers terminate at an inner axial end of the valve chamber; andthe support layer extends past the inner axial end of the valve chamber and forms an annular wall of the valve chamber.4. The sleeve of claim 1 , wherein:a thickness of the support layer is greater than a thickness of the energizer layer;a thickness of the energizer layer is greater than a thickness of the guide layer;the thickness of the guide layer is less than one-fourth of a total thickness of the sleeve; andthe thickness of the energizer layer is about ¼-½ of ...

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Номер записи: 92
17-11-2016 дата публикации

Tool

Номер: US20160332288A1
Автор: Honsa Thomas W.
Принадлежит:

One embodiment of a tool generally comprises a skeleton, barrel, valve box assembly, and a throttle assembly. A sleeve may also be included to cover a portion of the skeleton. The skeleton may include a main body with a handle member protruding therefrom, wherein a throttle void may be formed intermediate to the main body and handle member. The throttle assembly may be configured such that the actuation of the throttle is in a direction substantially perpendicular to the handle member, which allows periphery of the handle member to be less than it would in a parallel configuration. A sleeve fashioned of energy absorbing and/or vibration damping material may be positioned over a portion of the skeleton. A handle integrally formed with the sleeve may cover the handle member to increase the ergonomic features of the tool. 1. A tool comprising:a. a skeleton, wherein said skeleton is configured to cooperatively engage a kinetic energy providing member, wherein said skeleton is configured to engage a throttle assembly that controls the amount of kinetic energy said tool delivers, and wherein said skeleton is configured with a handle member;b. a barrel cooperatively engaged with said skeleton at a first end of said barrel, wherein a second end of said barrel is cooperatively engaged with a work piece for delivery of kinetic energy; andc. a throttle assembly cooperatively engaged with said skeleton, wherein said throttle assembly is configured to allow a user to manipulate the amount of kinetic energy at said work piece;d. a sleeve engaged with said skeleton, wherein said sleeve is positioned around a portion of an exterior of said skeleton, and wherein said sleeve absorbs a portion of kinetic energy generated by said portable tool during use thereof;e. a handle integrally formed with said sleeve, wherein said handle is positioned around an exterior of said handle member of said skeleton, wherein said handle is formed with a palm contour on a rear-facing surface of said ...

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Номер записи: 93
17-11-2016 дата публикации

RECIPROCATING HAMMER WITH DOWNWARD THRUST ASSIST

Номер: US20160333542A1
Автор: Connerley James J., Jinnings John, Widenhoefer Brian
Принадлежит:

A reciprocating hammer with a two-stage acceleration of a pile driving ram, including a first stage in which initial gravitational acceleration is assisted by a thruster and a second stage in which the initially accelerated ram is allowed to further accelerate under the force of gravity alone for the remainder of the pile driver stroke. The force assist in the initial acceleration stage acts as a force multiplier, such that the anvil delivers impact forces to the pile greater than the impact forces achievable by gravity alone for a given stroke length/ram weight combination. 1. A reciprocating hammer comprising:a ram cyclically movable from a raised position to an impact position along a two-stage stroke length, said two-stage stroke length comprising an assisted stroke length and a freefall stroke length, said assisted stroke length extending from the raised position to an intermediate position and said freefall stroke length extending from the intermediate position to the impact position;a drive mechanism selectively functionally coupled to the ram and operable to lift the ram from the impact position through the two-stage stroke length and to the raised position, and then to functionally decouple from the ram to allow the ram to fall from the raised position to the impact position; anda thruster compressible by said ram as said ram advances from the intermediate position to the raised position, said thruster receiving stored energy from said drive mechanism as said thruster compresses, said thruster discharging the stored energy to the ram as the ram falls through the assisted stroke length, whereby said thruster releases the stored energy to said ram in cooperation with gravity to initially accelerate said ram through said assisted stroke length, and said ram further accelerates through said freefall stroke length under the force of gravity alone.2. The reciprocating hammer of claim 1 , wherein said thruster comprises:a fluid chamber;a piston positioned to ...

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Номер записи: 94
24-10-2019 дата публикации

Impact Hammer

Номер: US20190321957A1
Автор: Galloway Christopher John, Stoner Raymond
Принадлежит:

A hydraulic, pneumatic, gasoline, diesel, or electric tool may include a spindle that is adapted for rotational movement. A swing arm may be coupled to the spindle such that rotational motion of the spindle is transferred to the swing arm. The swing arm makes contact with a piston such that the rotational motion causes the piston to move along a linear path. The piston may interact with an energy storage medium when the swing arm moves the piston in the first direction, causing energy to be stored in the energy storage medium. As the swing arm continues to rotate, the swing arm may lose contact with the piston, thus allowing the energy storage medium to urge the piston in a second direction opposite the first direction to strike an anvil. The swing arm may be a multiple roller swing arm. The energy storage medium may be a compound spring assembly. 1. An impact hammer , comprising:a spindle adapted for rotational movement; a first end, the first end comprising a first swing arm to piston engagement roller;', 'a second end, the second end comprising a second swing arm to piston engagement roller; and', 'an attachment point, the attachment point being rotatably coupled to the spindle such that the rotational motion of the spindle is transferred to the swing arm;, 'a multiple roller swing arm comprisinga piston comprising a piston contact surface adapted to contact the first swing arm to piston engagement roller such that rotation of the multiple roller swing arm causes the piston to move in a first direction along a linear path, the piston interacting with an energy storage medium when the multiple roller swing arm moves the piston in the first direction causing energy to be stored in the energy storage medium; andan anvil comprising an anvil impact surface adapted to contact the piston;wherein continued rotation of the multiple roller swing arm causes the first swing arm to piston engagement roller to lose contact with the piston contact surface allowing the energy ...

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Номер записи: 95
01-12-2016 дата публикации

tool attachment for a hand-held power tool

Номер: US20160346911A1
Автор: BLUM Jens, HERR Tobias, Roehm Heiko, SAUR Dietmar, Welke Joerg
Принадлежит:

A tool attachment for a handheld power tool that has a housing having a fastening interface includes: an attachment housing on which there is situated a locking unit for locking the tool attachment on the fastening interface of the handheld power tool; a tool receptacle for accommodating an insertion tool; and a hammer mechanism situated in the attachment housing, which hammer mechanism is configured to apply an impact in the axial direction of the tool receptacle on the insertion tool, during hammer operation of the tool attachment. 121-. (canceled)22. A tool attachment for a handheld power tool having a housing with a fastening interface opening , the tool attachment comprising:an attachment housing;a locking unit situated on the attachment housing for locking the tool attachment on the fastening interface of the handheld power tool;a tool receptacle accommodating an insertion tool; anda hammer mechanism situated in the attachment housing and configured to apply an impact in the axial direction of the tool receptacle on the insertion tool during hammer operation of the tool attachment.23. The tool attachment as recited in claim 22 , wherein the hammer mechanism is a pneumatic hammer mechanism.24. The tool attachment as recited in claim 22 , wherein the hammer mechanism has a beater which claim 22 , during operation of the tool attachment claim 22 , is driven by a piston allocated to the beater claim 22 , to impact against an impact bolt.25. The tool attachment as recited in claim 24 , wherein the impact bolt is connected to a driven element allocated to the tool receptacle.26. The tool attachment as recited in claim 22 , wherein the hammer mechanism is a mechanical hammer mechanism.27. The tool attachment as recited in claim 26 , wherein the hammer mechanism has a drive element situated coaxially to the tool receptacle.28. The tool attachment as recited in claim 26 , wherein the tool receptacle has a driven spindle rotatable about a specified axis of rotation ...

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Номер записи: 96
29-11-2018 дата публикации

FORWARD-REVERSE VALVE AND PNEUMATIC TOOL HAVING SAME

Номер: US20180339406A1
Автор: Billings Ross Arthur, Birkel Andrew Joseph, Patel Sandipkumar D.
Принадлежит:

In a pneumatic-powered tool, a flow of air along a first or second flow path may be controlled by a position of air inlet guide surfaces of a rotatable valve relative to air inlet guide slots of a fixed valve sleeve. Air flowing along the first flow path may rotate a motor in a first direction to operate the tool in a forward mode. Air flowing along the second flow path may rotate the motor in the second direction to operate the tool in a reverse mode. In the forward mode, as air flows along the first flow path, air may be discharged along a primary discharge path, with a portion of the second flow path providing a secondary discharge path. In the reverse mode, as air flows along the second flow path, air may be discharged along the primary discharge path, with a portion of the first flow path providing the secondary discharge path. 1. A pneumatic-powered tool , comprising:a housing; a rotor sleeve; and', 'a rotor rotatably positioned in the rotor sleeve;, 'a motor installed in the housing, including [ a main inlet slot defined in a bottom portion of the valve sleeve;', 'a first inlet guide slot defined in a first side of the valve sleeve;', 'a second inlet guide slot defined in a second side of the valve sleeve;', 'a first discharge guide opening defined in the first side of the valve sleeve; and', 'a second discharge guide opening defined in the second side of the valve sleeve; and, 'a valve sleeve received in the housing, the valve sleeve including, a valve body;', 'a first inlet guide surface defined in a first side of the valve body;', 'a second inlet guide surface defined in a second side of the valve body; and', 'a discharge guide surface defined by a chamfer at a distal end portion of the valve body., 'a valve rotatably received in the valve sleeve, the valve including], 'a valve assembly selectively providing compressed air to the motor, the valve assembly including2. The tool of claim 1 , whereinthe first inlet guide slot is defined in a first side of an ...

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Номер записи: 97
17-12-2015 дата публикации

Device for providing access to a space

Номер: US20150360358A1
Автор: Jitty Hillebranda Struik, Johannes Willem Rolfers
Принадлежит: SF BOOSTER HOLDING BV

The present invention relates to a device for providing access to a space, wherein the space is provided with an access element, such as for instance a door or window, wherein the device is provided with pressing means for exerting an impact force on one or more parts of the access element, such as for instance a door frame, comprising: an elongate housing, an elongate impact element for exerting the impact force on the access element which is adjustably movable between a starting position and an end position by means of first drive means, the first drive means are adapted to produce the impact force, the impact element is comprised in a first guide extending along the impact element, the impact element is provided from close to the first outer end up to at least an exit opening with a narrowed portion, the first drive means comprise a first fluid reservoir provided with a first fluid suitable for high-pressure application, wherein in the starting position of the impact element the first fluid is arranged compressed in the first fluid reservoir and the first fluid reservoir is in fluid communication with a first side of the first outer end of the impact element, first activating means for activating the device.

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Номер записи: 98
21-12-2017 дата публикации

Shock Absorption Structure of the Pneumatic Tool

Номер: US20170361446A1
Автор: Hsieh Chih-Kuan, Huang Ping-Nan
Принадлежит:

A shock absorption structure of a pneumatic tool, the pneumatic tool contains: a body, a cylinder, a gas valve unit, an impact element, and an elastic unit. The body includes an air channel and a cavity having a closing face, an opening, and an air chamber. The body also includes a first orifice and a second orifice. The cylinder includes a sliding room, a contacting fringe, a defining cutout, and an air inlet. The gas valve unit is fixed between the sliding room and the contacting fringe. The impact element is disposed in the sliding room and is pushed by the high pressure gas to reciprocately move. The elastic unit includes an elastic pushing force and is secured in the air chamber so as to push against the closing face and the contacting fringe and to push the cylinder to move away from the grip handle. 1. A shock absorption structure of a pneumatic tool , the pneumatic tool comprising:a body including an air channel configured to flow high pressure gas, and the body including a cavity defined in the body, the cavity having a closing face formed on a first end thereof, and the cavity having an opening defined on a second end of the body opposite to the first end of the cavity, the body also including a first orifice passing through the cavity, and the body including a second orifice communicating with the air channel and the cavity, the first orifice accommodating a limitation element, a part of which extends to the cavity;a cylinder movably fixed in the cavity of the body and a part of the cylinder extending out of the body from the opening of the cavity, the cylinder including a sliding room defined in the cylinder, and the cylinder including a contacting fringe arranged on one end of the cylinder facing the closing face of the cavity of the fitting sleeve, the cavity of the body having an air chamber defined between the contacting fringe and the closing face, the cylinder having a defining cutout formed on an outer wall of the cylinder corresponding to the ...

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Номер записи: 99
19-11-2020 дата публикации

Impact Hammer

Номер: US20200361070A1
Автор: Galloway Christopher John, Stoner Raymond
Принадлежит:

A hydraulic, pneumatic, gasoline, diesel, or electric tool may include a spindle that is adapted for rotational movement. A swing arm may be coupled to the spindle such that rotational motion of the spindle is transferred to the swing arm. The swing arm makes contact with a piston such that the rotational motion causes the piston to move along a linear path. The piston may interact with an energy storage medium when the swing arm moves the piston in the first direction, causing energy to be stored in the energy storage medium. As the swing arm continues to rotate, the swing arm may lose contact with the piston, thus allowing the energy storage medium to urge the piston in a second direction opposite the first direction to strike an anvil. The swing arm may be a multiple roller swing arm. The energy storage medium may be a compound spring assembly. 1. An impact hammer , comprising:a spindle adapted for rotational movement; a first end, the first end comprising a first swing arm to piston engagement roller; and', 'a second end, the second end comprising a second swing arm to piston engagement roller; and, 'a multiple roller swing arm comprisinga piston comprising a piston contact surface adapted to contact the first swing arm to piston engagement roller such that rotation of the multiple roller swing arm causes the piston to move in a first direction along a linear path, the piston interacting with an energy storage medium when the multiple roller swing arm moves the piston in the first direction causing energy to be stored in the energy storage medium;wherein continued rotation of the multiple roller swing arm causes the first swing arm to piston engagement roller to lose contact with the piston contact surface allowing the energy storage medium to urge the piston in a second direction opposite the first direction allowing the piston to strike an anvil impact surface for a first strike during a single rotation of the spindle;wherein continued rotation of the multiple ...

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Номер записи: 100