Impacting Devices (e.g., Hammers) Patents (Class 173/90)
  • Patent number: 8640786
    Abstract: A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill. Hammering action from the actuator and rotation from the drill are applied directly to material being drilled. In a second modality, a percussive augmenter includes an actuator that operates as a hammering mechanism that drives a free mass into the bit creating stress pulses that fracture material that is in contact with the bit.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 4, 2014
    Assignee: California Institute of Technology
    Inventors: Jack Barron Aldrich, Yoseph Bar-Cohen, Stewart Sherrit, Mircea Badescu, Xiaoqi Bao, James Samson Scott
  • Publication number: 20140020920
    Abstract: A hydraulic accumulator includes an accumulator housing defining a gas reservoir and a liquid volume. A flexible membrane is positioned within the accumulator housing and separates the gas reservoir and the liquid volume. A flow control screen defines a wall of the accumulator housing, has a screen thickness, and includes an exterior face opposing a membrane engagement face. A first slot is formed through the exterior face and has a first slot depth that is less than the screen thickness. A second slot is formed through the membrane engagement face and has a second slot depth that is less than the screen thickness. The first slot and the second slot intersect to fluidly connect an exterior of the accumulator housing with the liquid volume.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 23, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Dennis Wai Man Tang, Lauritz Pillers
  • Publication number: 20140008089
    Abstract: In an impact driver including an impact mechanism for percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool, the tool receptacle is embodied as a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft in order to prevent at least tool-free detachment of the clamping chuck from the output drive shaft.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 9, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Sim Teik YEOH, Siew Yuen Lee
  • Patent number: 8613327
    Abstract: A fluid powered percussion tool 1 has a housing 2 with a supply channel for pressurized fluid 3, a percussion mechanism 4, a swing joint 5 arranged to carry the percussion mechanism 4 relative to the housing 2 at a point situated between the forward end A and the rear end B of the percussion mechanism 4, at least one elastically resilient element 6 arranged between the housing 2 and the percussion mechanism 4 at a distance from the swinging joint 5 and arranged to load the percussion mechanism 4 against a neutral position in the housing 2 and to absorb the vibrational movements of the percussion mechanism 4, and a flexible connection for pressurized fluid 7 for distribution of pressurized fluid from the supply channel for pressurized fluid 3 to the percussion mechanism 4. The elastically resilient element 6 includes a conical spring 8. The flexible connection for pressurized fluid 7 includes a hose 11.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 24, 2013
    Assignee: Atlas Copco Construction Tools AB
    Inventors: Ingemar Johansson, Lars Saxbäck, Thomas Lilja, Ola Davidsson
  • Publication number: 20130333908
    Abstract: A transmission housing, in particular for a hammer drill and/or percussion hammer, for accommodating a percussion mechanism includes at least one housing part and at least one cover part adjacent to the housing part. The cover part is configured to close off the transmission housing in a direction opposite to a percussion direction.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Inventors: Juergen Lennartz, Achim Duesselberg
  • Patent number: 8607893
    Abstract: The cover is provided with engaging pieces that engage with a recessed groove provided on the outer peripheral surface of a hammer case and hold the cover on the hammer case to prevent the cover from being detached. The cover is also provided with bumper receiving portions extending from the front end of the cover and allowing the bumper to be externally attached to the cover, and engaging claws formed on the bumper receiving portions and engaging with engaged recessed portions formed on the inner peripheral surface of the bumper for holding the bumper to prevent the bumper from being detached from the cover. The cover with the bumper attached to the bumper receiving portions is provided to the hammer case.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: December 17, 2013
    Assignee: Makita Corporation
    Inventors: Ryunosuke Kumagai, Hidenori Nagasaka, Manabu Sugimoto
  • Patent number: 8561730
    Abstract: A retaining assembly for a cylindrical member and support sleeve in the bore of a component of a DTH. The cylindrical member and support sleeve may, for example, be a foot valve assembly for insertion into a counter bore in a bit. The cylindrical member has a cylindrical member rigidity and at least a portion of the support sleeve has a rigidity greater than the cylindrical member rigidity. A gap is provided between the sleeve and the component bore of the DTH. The cylindrical member deforms in the gap, resulting in the cylindrical member being fixedly sandwiched between the support sleeve and the component bore.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: October 22, 2013
    Assignee: Atlas Copco Secoroc LLC
    Inventors: Jing James Yao, Paul Campbell, William H. Dell, II, Dale R. Wolfer, Timothy J. Plunkett
  • Patent number: 8555998
    Abstract: A drill includes a housing and a motor coupled to an output member by a transmission. The transmission can selectively couple the output member to an output spindle through a low speed output gear or a high speed output gear for rotating the output spindle at a first speed or a second speed, respectively. Alternatively or additionally, a low speed mode can be provided by actuating an electronic switch that limits the speed of the motor. A rotatably fixed hammer member and a rotatable hammer member can be mounted around the output spindle. A mode collar can be rotatably mounted on the housing and around the output member for movement to positions that correspond to various mode of operation, including a low speed mode, a high speed mode, and a hammer-drilling mode. In the hammer-drilling mode, the transmission operates in the high speed mode.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: October 15, 2013
    Assignee: Black & Decker Inc.
    Inventors: James D. Schroeder, Dennis A. Bush, Paul K. Trautner
  • Publication number: 20130228356
    Abstract: Power tools with housings or hammer cases include a thin wall titanium shell tapering from a smaller forward section to a larger rearward section; with at least the rearward section having a wall with a substantially constant wall thickness and an interface flange that includes an outer perimeter profile that is curvilinear and defines a plurality of outwardly extending detents that provide an interference fit with the wall of the hammer case.
    Type: Application
    Filed: February 18, 2013
    Publication date: September 5, 2013
    Applicant: Ingersoll-Rand Company
    Inventors: Connor Allan Hayes, James Francis Bouchard, Randolph Robert Ruetsch, Michael Sikorski
  • Patent number: 8522892
    Abstract: An apparatus and method of manufacturing the same are disclosed for an impact device with interchangeable tools for applying precise momentum force to an external object. The device includes two elongated members, one of which containing a hollow portion, and a tool head disposed on one side of the first elongated member. The device can be configured to allow the first elongated member to be removably inserted into the second elongated member and to allow the second elongated member to strike the tool head in order to impart force on an external object.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: September 3, 2013
    Inventor: Normand Lemelin
  • Patent number: 8490715
    Abstract: The invention relates to a hand-held machine tool, in particular a hammer drill and/or chipping hammer. The tool according to the invention has a transmission device with a drive bearing that has at least one torque-transmitting means with a transmitting contour for transmitting a torque onto the drive bearing. According to the invention, the transmitting contour of the torque-transmitting means is produced by axial machining and/or a stamping and/or planning process.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: July 23, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Andre Ullrich, Richard Engel, Tobias Herr
  • Publication number: 20130180746
    Abstract: A pneumatic impact tool includes a spindle extending along an X-axis, an output shaft extending along a Z-axis, and a spindle positioning device that includes a bushing and a stop pin. The bushing is threaded in a housing, and has a stop surface and a frustoconical outer surface. The stop surface obstructs the spindle from moving away from the output shaft. The frustoconical outer surface has opposite first and second ends. The first end is nearer to the X-axis and farther away from the Z-axis than the second end. The stop pin is disposed removably in the housing, and has an engaging surface abutting against the frustoconical outer surface, so as to prevent the bushing from moving in the housing in a direction away from the output shaft.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 18, 2013
    Applicant: BASSO INDUSTRY CORP.
    Inventor: Basso Industry Corp.
  • Publication number: 20130161044
    Abstract: In a hand-held machine tool, having a tool holder for holding at least one first tool, which has a tang having a first coupling contour that is able to be connected to the tool holder and having a striking mechanism for the striking drive of the first tool connected to the tool holder in the axial direction of the tool holder in a striking operation associated with the hand-held machine tool, a chuck adapter is provided to hold at least one second tool, which has a tang provided with a second coupling contour, which is able to be connected to the chuck adapter in a torsionally fixed manner.
    Type: Application
    Filed: May 19, 2011
    Publication date: June 27, 2013
    Inventors: Joachim Hecht, Martin Kraus
  • Publication number: 20130145904
    Abstract: A tactical entry tool for creating an entry point through a building structure is provided. The tool includes a shaft portion including a shaft, and a head portion attached to a first end of the shaft. The head portion includes two heads, with each head including a head shaft extending from the shaft to form a ‘Y’ shaped structure and a break head portion attached to the head shaft at an opposite end from which the head shaft is connected to the shaft. Each break head portion includes a plurality of teeth surrounding the perimeter of the break head portion and a plurality of breaker tips extending from the break head portion.
    Type: Application
    Filed: February 5, 2013
    Publication date: June 13, 2013
    Applicant: J&N TACTICAL, LLC
    Inventor: J&N TACTICAL, LLC
  • Publication number: 20130133909
    Abstract: Vibrational apparatus to direct stress waves (eg. to a bit 2 or other downhole tool) by generating vibrations as a consequence of shuttling responsive to relative rotational movement between magnetic arrays and wherein there is, or can be, a use of a system (whether rebound, recoil, spring, pneumatic, magnetic or not) able at least in part to return acquired potential energy in addition to any acquired at the same time by the interacting magnetic arrays. A free travel distance can be provided for one of said components prior to the onset of any substantial collection of energy from the movement (relative) of that component in a direction (eg, uphole) for use in return travel (eg, downhole) preferably synchronized, or synchronizable, to enhance the return travel causing forces of any repulsive and/or attractive forces generated otherwise than by the said magnetic arrays.
    Type: Application
    Filed: May 24, 2011
    Publication date: May 30, 2013
    Inventors: Roland Greenwood, Peter Evan Powell
  • Publication number: 20130126199
    Abstract: An impact element is provided and includes a single body drivable into an external element by force acting on a piston head. The single body includes a head and a shaft having a first end integrally coupled to the head, a second end opposite the first end and a central portion interposed between the first and second ends. The second end of the shaft is operatively connectable with the piston head to define a joint located remotely from the head. The first end of the shaft has a trailing portion with a diameter similar to that of the central portion, a leading portion with a diameter similar to that of the rear end of the head and a taper from the trailing portion to the leading portion.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: Raytheon Company
    Inventors: Luis Giraldo, Benjamin Dolgin, John Ryan, Michael Millspaugh, Edward Dezelick
  • Publication number: 20130118768
    Abstract: The invention relates to a percussion tool having an internal combustion engine and a hammer mechanism that can be driven by the internal combustion engine by means of a transmission. A part of the engine housing, the transmission housing, or the impact hammer mechanism housing is enclosed by a cover. The cover is spaced at a distance from the remainder of the machine, so that a gap is present between the cover and the remainder of the machine. Cooling air can flow into the gap at the lower face of the cover and flow back out via a flue and an opening. The components beneath the cover are thereby effectively cooled, even without an additional cooling air blower.
    Type: Application
    Filed: January 13, 2011
    Publication date: May 16, 2013
    Applicant: Wacker Neuson Produktion GmbH & Co. KG
    Inventors: Rudolf Berger, Helmut Braun
  • Publication number: 20130112447
    Abstract: A portable driving device for permanently driving stakes, survey flags, posts, or the like, of varying sizes and shapes, into the ground. The invention provides for powering the device by a pressurized fluid with a single power cylinder, a valve control assembly including a self-exhausting spool valve controlled by a rod that runs through the spool valve, and safety switches in series for controlling delivery of pressurized fluid to the driving device.
    Type: Application
    Filed: August 29, 2012
    Publication date: May 9, 2013
    Inventor: Daniel F. Rohrer, JR.
  • Publication number: 20130087356
    Abstract: The invention relates to a rock drilling machine comprising a front part (1a), a removable cartridge (5) arranged in the front part (1a), a shank adapter (3) and a stop ring (4) for the shank adapter (3). According to the invention, the diameter of the removable cartridge (5) is at least as great as the diameter of the stop ring (4), such that it is possible during demounting of the removable cartridge (5) to mount or demount the stop ring (4), without removing the front part (1a) from the rock drilling machine. The invention also relates to a removable cartridge (5), a stop ring (4) and a drilling rig incorporating the drilling machine.
    Type: Application
    Filed: May 6, 2011
    Publication date: April 11, 2013
    Inventors: Ulf Nilsson, Magnus Walter
  • Patent number: 8413742
    Abstract: It is an object of the invention to reduce noise caused by run-out of a tool bit in an impact tool. The representative impact tool according to the invention includes a tool holder 137 that houses a tool bit 119 in such a manner that the tool bit can linearly move in its axial direction, and a barrel 108 that is integrally connected to the tool holder 137 The impact tool further includes an elastic element 155 that is disposed between an inner circumferential surface of the tool holder 137 and an outer circumferential surface of the tool bit 119 in an end region of the tool bit 119 on the barrel side and connected in close contact with the tool holder 137 and the tool bit 119 over a predetermined length of the tool bit 119 in the axial direction. The elastic element 155 applies a biasing force to prevent a run-out of the tool bit 119 in a direction transverse to the axial direction. Further, an intermediate element 145 comes in point contact with the tool bit 119 on its axial center line.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: April 9, 2013
    Assignee: Makita Corporation
    Inventors: Hiroki Ikuta, Masao Miwa, Takuya Sumi
  • Publication number: 20130081837
    Abstract: A hydraulic hammer having a front head and a lower bushing is disclosed. Also disclosed is a system and method for easily removing the lower bushing from the front head. The front head of the hydraulic hammer may define a bore therein and an inner surface of the bore may have a first taper. The lower bushing of the hydraulic hammer may be capable of being positioned within the bore of the front head and an outer surface of the lower bushing may have a second taper, with the first taper substantially following the second taper.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Inventors: Rakesh Dushyantrao Jagdale, Lauritz P. Pillers, II
  • Patent number: 8387487
    Abstract: A tactical entry tool for creating an entry point through a building structure is provided. The tool includes a shaft portion including a shaft, and a head portion attached to a first end of the shaft. The head portion includes two heads, with each head including a head shaft extending from the shaft to form a ‘Y’ shaped structure and a break head portion attached to the head shaft at an opposite end from which the head shaft is connected to the shaft. Each break head portion includes a plurality of teeth surrounding the perimeter of the break head portion and a plurality of breaker tips extending from the break head portion.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: March 5, 2013
    Assignee: J&N Tactical, LLC
    Inventors: Jeffrey Herr, Matt Herr
  • Patent number: 8381958
    Abstract: A self-contained button attachment kit includes a pair of buttons, fastener clips and a tool for dispensing a fastener from a fastener clip to reattach a button to an article of clothing. The tool includes a single, hollow needle, a holder adapted to retain the needle and buttons, a handle telescopingly mounted on the holder, a spring-biased ejection mechanism connected to the handle, a front cap removably coupled to the handle over the needle and a rear cap removably coupled to the handle for storing fastener clips. In operation, the front cap serves as an anvil that supports the article and button to be attached. With a fastener clip loaded into the holder, the needle is then inserted through the pair of items. Displacement of the handle relative to the holder causes an ejection rod to dispense the cross-bar of a fastener through the needle, thereby completing the attachment process.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 26, 2013
    Assignee: Avery Dennison Corporation
    Inventors: Pauline M. Lussier, Michael French, David L. Schuttler
  • Patent number: 8365827
    Abstract: A series of jet nozzles have a telescoping structure designed to impact the borehole wall and initiate a fracture. The nozzles can be extended through fluid pumped through them or with some mechanical force from within the bottom hole assembly. The leading ends of the telescoping assembly can be sharp and hardened to facilitate the initiation of a formation fracture in an open hole. The telescoping structures can be disposed in a single or multiple rows with the circumferential spacing being such that each telescoping structure is designed to cover a target circumferential distance of 45 degrees or less so that jetted fluid from at least one jet will be within 22.5 degrees of a location of maximum formation stresses to reduce the tortuosity of the created fractures from jetting through the nozzles with possible enhancement of the fracturing from added annulus pressure.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: February 5, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Maria M. O'Connell, Michael H. Johnson, David A. Castillo
  • Patent number: 8360167
    Abstract: A hydraulic hammer (14) may include a housing (30) having a distal end defining an opening (38), a bushing (54) positioned adjacent the housing distal end, the bushing (54) having an inner guide surface (58) and a distal end (56), and a tool (22) having a proximal section (60) slidably disposed in the bushing inner guide surface (58) and a distal section (62) projecting from the housing (30) through the opening (38). The hydraulic hammer (14) may further include a composite seal (70) having an exterior cover (72) with a proximal end (76) releasably coupled to the bushing (54) and a distal end (77) projecting from the distal end (56) of the bushing (54), the exterior cover distal end (77) defining a recess (90) opening toward the tool (22), and an interior seal (74) having a base (92) disposed in the exterior cover recess (90) and a sealing arm (94) projecting inwardly from the base (92), the sealing arm (94) being configured to sealingly engage the tool (22).
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 29, 2013
    Assignee: Caterpillar Inc.
    Inventors: Rakesh Dushyantrao Jagdale, Lauritz Phillip Pillers, II
  • Patent number: 8353360
    Abstract: A pile driver provided with a housing and at least one body connected with the housing so as to be moved back and forth over a predetermined path, the pile driver being further provided with a drive for moving the body back and forth over the path for the purpose of pile-driving, the pile driver comprising at least two parts movable relative to each other, respectively having at least a first type of sliding surface and at least a second type of sliding surface which during pile-driving slide along each other and between which there is a lubricant, wherein the first type of sliding surface is provided with polyether ether ketone.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: January 15, 2013
    Assignee: IHC Holland IE B.V.
    Inventors: Hendrik Marcel Slot, Arris Van Duijvenboden
  • Publication number: 20130000934
    Abstract: A power tool includes a motor, an impact mechanism, an output unit, a circuit board, a housing, and a power cord. The circuit board includes a power-source circuit board configured to convert alternate current into direct current and a control circuit board. The housing includes a body section, a board accommodating section, and a handle section. The board accommodating section accommodates the circuit board. The handle section has one end portion connected to the body section and another end portion connected to the board accommodating section. The power cord extends from the board accommodating section. The power cord is positioned opposed to the handle section with respect to the board accommodating section. The control circuit board is located at a position close to the handle section in the board accommodating section. The power-source circuit board is located between the control circuit board and the power cord.
    Type: Application
    Filed: December 27, 2011
    Publication date: January 3, 2013
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Naoki Tadokoro, Ken Miyazawa, Hajime Kikuchi, Toshiaki Koizumi
  • Publication number: 20120325509
    Abstract: An impact wrench, includes a housing including a handle. A rotating anvil is supported by the housing and includes a polygonal head adapted for receiving a socket thereon. A socket retention device is mounted to the polygonal head of the rotating anvil for securing a socket to the polygonal head. A socket release mechanism includes an actuator mounted to the housing and operable to disengage the socket retention device from the socket to allow the socket to be removed from the anvil.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 27, 2012
    Applicant: BLACK & DECKER INC.
    Inventors: Daniel Puzio, Robert J. Opsitos, Robert G. Kusmierski, Robert S. Gehret, John Cox, Craig A. Schell, Michael Haupt, Joseph Kelleher
  • Patent number: 8322457
    Abstract: A power tool includes a housing, a motor supported in the housing, a chuck assembly having a chuck body rotatable about a central axis in response to torque received from the motor, and a plurality of jaws supported in the chuck body. Each of the jaws includes a front portion operable to grasp a tool element and a rear portion positioned outside the chuck body. The power tool also includes a hammer mechanism operable to impart movement to the chuck assembly, in a direction parallel to the central axis, during rotation of the chuck assembly about the central axis.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: December 4, 2012
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Kwok Ting Mok, Xian Guo Zhao, Zhi Liu Gu
  • Patent number: 8316962
    Abstract: It is an object of the invention to reduce noise caused by run-out of a tool bit in an impact tool. The representative impact tool according to the invention includes a tool holder 137 that houses a tool bit 119 in such a manner that the tool bit can linearly move in its axial direction, and a barrel 108 that is integrally connected to the tool holder 137 The impact tool further includes an elastic element 155 that is disposed between an inner circumferential surface of the tool holder 137 and an outer circumferential surface of the tool bit 119 in an end region of the tool bit 119 on the barrel side and connected in close contact with the tool holder 137 and the tool bit 119 over a predetermined length of the tool bit 119 in the axial direction. The elastic element 155 applies a biasing force to prevent a run-out of the tool bit 119 in a direction transverse to the axial direction. Further, an intermediate element 145 comes in point contact with the tool bit 119 on its axial center line.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: November 27, 2012
    Assignee: Makita Corporation
    Inventors: Hiroki Ikuta, Masao Miwa, Takuya Sumi
  • Publication number: 20120292859
    Abstract: A tool is disclosed for adjusting a seal. The tool includes an engagement block. The engagement block defines a slot configured to capture a portion of the seal. The tool further includes an impact surface connected to the engagement block, and a hammer head movable along a strike axis with respect to the engagement block and configured for striking the impact surface. Striking of the impact surface with the hammer head can cause movement of the seal.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 22, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: John William Herbold, Charles V. Spanos
  • Patent number: 8297373
    Abstract: An impact device includes a housing, a motor supported by the housing, a stationary shaft, and a rotating transmission member supported on the stationary shaft for rotation. The rotating transmission member includes a hub having a first cam surface. The impact device also includes a rotating impact member carried by the transmission member and rotatable relative to the transmission member. The rotating impact member includes a lug protruding from an outer periphery of the rotating impact member and a second cam surface. The impact device further includes a spherical element engaged with the first and second cam surfaces on the hub of the rotating transmission member and the rotating impact member, respectively, an energy-absorbing member exerting a biasing force against the rotating impact member, and a reciprocating impact member oriented substantially normal to the stationary shaft and impacted by the lug of the rotating impact member.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: October 30, 2012
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: William A. Elger, Jeremy R. Ebner
  • Publication number: 20120255749
    Abstract: The present invention provides methods and systems for a rotary impact device having an annular exterior surface for use with an impact wrench for providing torque to a fastener. The rotary impact device includes an input member having an input recess for receiving the anvil of the impact wrench, an output member having an output recess for receiving the fastener, and an inertia member. The inertia member is stationary and positioned on the exterior surface of the rotary impact device for increasing the torque applied to the fastener.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 11, 2012
    Applicant: INGERSOLL-RAND COMPANY
    Inventors: Warren Andrew SEITH, Ryan Scott AMEND
  • Patent number: 8261850
    Abstract: The invention relates to a striking mechanism of a handheld electric power tool, in particular a percussion drill and/or percussion hammer, having a hammer cylinder, a piston mounted with a guide section inside the hammer cylinder in a longitudinally displaceable manner, and a piston outer guide on which a guide area of the piston is guided in a longitudinally displaceable manner. A piston end located outside the hammer cylinder comprises an overlap for overlapping an end area of the hammer cylinder, and the guide area at least partially belongs to the overlap or is affixed there.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 11, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Rudolf Fuchs
  • Patent number: 8251157
    Abstract: A system includes a power tool having a motor, a drive mechanism mechanically coupled to the motor, and an output element mechanically coupled to the drive mechanism. The motor is operable to drive the drive mechanism and the output element. The system also includes a non-motorized sensing tool having a printed circuit board and a sensing element electrically coupled to the printed circuit board. The sensing element is operable to detect an external characteristic and output a signal to the circuit board. The circuit board is operable to condition the signal into a human-comprehensible form. The system further includes a rechargeable battery pack removably and independently coupled to the power tool and the non-motorized sensing tool. The battery pack is operable to power the motor to drive the drive mechanism and the output element when connected to the power tool, and is operable to power the circuit board and the sensing element when connected to the non-motorized sensing tool.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: August 28, 2012
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Rick Gray, Paul Fry, Mike N. Jones, Scott Schneider, Hugues Marie R. F. Sanoner
  • Patent number: 8235138
    Abstract: A power tool capable of performing vibration damping action in working operation, without an increase in size. The working tool includes a motor, a housing in which an internal mechanism driven by the motor is stored, a tool bit disposed on one end of the housing, a hand grip continuously connected to the other end of the housing, and a dynamic damper. The dynamic damper is disposed by utilizing a space between the housing and the internal mechanism so that the damping direction of the dynamic damper faces the longitudinal direction of the tool bit.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: August 7, 2012
    Assignee: Makita Corporation
    Inventor: Yonosuke Aoki
  • Publication number: 20120193111
    Abstract: The invention relates to systems and methods for providing a stake driver attachment apparatus having a planar surface that facilitates driving a stake into a penetrable medium adjacent and substantially parallel to a stationary object or surface.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 2, 2012
    Inventors: Ty Brent Lechtenberg, Jonathan Layne
  • Patent number: 8230944
    Abstract: An alignment tool for aligning fence posts and a method for aligning fence posts are provided. The alignment tool can include an alignment plate with an aperture adapted to receive a fence post. The alignment plate is interconnected to a lever arm to facilitate the application of a torque to a fence post received by the aperture of the alignment plate at a desired location along the length of the fence post. The alignment plate can additionally include one or more notches adapted to receive an edge of a fence post. By applying a force through the lever arm, the portion of an edge of the fence post received by the notch can be crimped and/or otherwise aligned at a desired location along the length of the fence post. The lever arm can comprise a post pounder, resulting in a tool that is capable of performing multiple functions.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: July 31, 2012
    Inventor: Wayne R. Thiem
  • Patent number: 8230945
    Abstract: The invention relates to a hand machine tool which has an intermediate flange, particularly for receiving transmission elements. The flange has at least one base body having at least one bearing point. It is proposed that at least one opening is provided at least in the area of the bearing point.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: July 31, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Bernhardt, Holger Ruebsaamen, Andreas Schlegel
  • Publication number: 20120160528
    Abstract: A pressure protection valve is provided which provides a fluid short circuit between a fluid pressure inlet of a hydraulic tool such as a hydraulic hammer and a low pressure region when the pressure at the fluid pressure inlet exceeds a first trigger pressure equal to a predetermined permissible pressure. This prevents damage to the hydraulic tool which can arise through operation at excessive fluid flow or pressure from hydraulic fluid supplied by a carrier vehicle. The pressure protection valve may maintain fluid communication between the fluid pressure inlet and the low pressure region until the pressure at the fluid pressure inlet reduces to a pressure below a predetermined second trigger pressure which is less than the first trigger pressure, to prevent further operation of the tool until the flow of fluid to the fluid pressure inlet has been stopped by an operator.
    Type: Application
    Filed: November 17, 2011
    Publication date: June 28, 2012
    Applicant: Caterpillar Inc.
    Inventor: Francis Theobalds
  • Publication number: 20120152577
    Abstract: A hand tool impacting device may include, a drive shaft with an aperture, an impaler disk, and a floating pin positioned within the aperture of the drive shaft. A set of circular ramps on the outer edge of the impaler disk may interact with a stationary pin insert to translate the drive shaft and create an impacting motion. A pair of springs placed against either side of the floating pin may allow a specialized tool bit to engage or disengage the impaler disk, thereby allowing selective use of translational impacting motion, or rotational torque. An impact bit for engaging the impaler disk may include, a tool head configured to engage a work piece and a tool shaft configured to be inserted into a hollow drive shaft to engage a floating pin. According to one embodiment, the impact bit includes a number of sleeves to guide the tool head during operation.
    Type: Application
    Filed: December 17, 2011
    Publication date: June 21, 2012
    Inventors: Christopher Mattson, Jake Allred, Jeremy Alsup, Travis Anderson, David Christensen, Jacob Morrise, Jon Ward
  • Publication number: 20120145424
    Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L. Craven, Lauritz P. Pillers
  • Publication number: 20120145425
    Abstract: There is disclosed a post extractor comprised in a post-pounder, the device having a length and a crosswise extraction hole. The hole may be sized to accept an exposed portion of the post and may have an engaging edge for engaging an exposed portion of the post. Methods of using the extractor to extract a post are also disclosed.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Inventor: Justin Page
  • Patent number: 8186452
    Abstract: A clamp system for an elongate member, comprising first and second clamp members, an actuator member, and an actuator system. The actuator member defines an actuator cam surface and is supported for movement between first and second actuator positions. The second clamp member defines a clamp cam surface and is supported for movement between first and second clamp positions. The actuator system displaces the actuator member between first and second actuator positions. As the actuator member moves from the first actuator position to the second actuator position, the actuator cam surface engages the clamp cam surface to cause the second clamp member to move towards the first clamp member, thereby clamping a portion of the elongate member between the first and second clamp members.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: May 29, 2012
    Assignee: American Piledriving Equipment, Inc.
    Inventors: John L. White, David Yingling
  • Patent number: 8181716
    Abstract: A breaking apparatus (1) which includes; a housing (3); a striker pin (4) having a driven end and an impact end, locatable in said housing (3) in at least one retaining location to protrude said impact end through the housing (3); a moveable mass (2) for impacting on the driven end of the striker pin (4), and a shock-absorber (7a, b) coupled to the retaining locations. The shock-absorber (1) also includes at least two elastic (12) and at least one inelastic (13) layer in a first shock-absorbing assembly (7a) located internally within the housing about the striker pin (2) between the retaining location and the striker pin impact end. The shock-absorbing assembly (7a) is configured to allow movement of the shock absorber parallel to, or co-axial with the striker pin longitudinal axis during use.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: May 22, 2012
    Assignee: Terminator IP SA
    Inventor: Angus Peter Robson
  • Publication number: 20120118596
    Abstract: An impact tool includes a housing, a motor supported in the housing and defining a first axis, an output shaft rotatably supported in the housing about a second axis oriented substantially normal to the first axis, and an impact mechanism coupled between the motor and the output shaft and operable to impart a striking rotational force to the output shaft.
    Type: Application
    Filed: November 10, 2011
    Publication date: May 17, 2012
    Inventor: John S. Scott
  • Patent number: 8176997
    Abstract: A hand-held power tool includes a work spindle (4)in which a chuck (3) for receiving an axially displaceable, within limits, percussion working tool (2), is mounted on. The work spindle (4) having a coaxial die (5) located in its interior for imparting blows to the percussion working tool (2). At least one cooling air channel (7) extends in an outer housing (6) radially outwardly of the work spindle and opens into a chuck free space (8) which adjoins the work spindle (4). The at least one cooling air channel (7) communicates with the interior of the work spindle through an opening (10, 10?) formed in the work spindle. A seal (9, 9?) completely flowtight seals the free space (8) outwardly.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: May 15, 2012
    Assignee: Hilti Aktiengesellschaft
    Inventor: Oliver Ohlendorf
  • Publication number: 20120111593
    Abstract: A driver 10 for a fence post is disclosed. The driver comprises an elongate hollow body 12 having an open in-use lower end 14. A guide 16 is removably locatable at the lower end.
    Type: Application
    Filed: February 10, 2010
    Publication date: May 10, 2012
    Applicant: Onesteel Wire Pty Limited
    Inventor: Lawrence O'Toole
  • Patent number: D684028
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 11, 2013
    Assignee: Dino Paoli S.R.L.
    Inventor: Mario Costoli
  • Patent number: RE44572
    Abstract: A nailer device is carried within a housing having a nozzle portion wherein the nozzle portion is connected with the housing via a head portion of the housing. The nozzle portion includes a sleeve, a fixing member, and a magnetic member located between the sleeve and the fixing member. The fixing member is mounted on the sleeve and the fixing member has a groove in which the magnetic member is arranged.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: November 5, 2013
    Assignee: Chervon (HK) Limited
    Inventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller