With Means To Directly Connect Anvil To Tool Patents (Class 173/132)
  • Patent number: 11925965
    Abstract: A pneumatic rust-removing tool includes a main body having a chamber and an opening at a front end of the chamber, an impact block reciprocatingly moveable back and forth in the chamber, a spring disposed in the chamber, a mount disposed in the chamber and located between the impact block and the spring, rust-removing needles disposed with the mount and extending through the opening, and a slide sleeve disposed to the main body in a way that the slide sleeve is moveable back and forth relative to the main body. The slide sleeve is provided with a plurality of through holes, through which the rust-removing needles extend respectively. As a result, the pneumatic rust-removing tool can quickly adjust the exposed lengths of the rust-removing needles to adapt to different operational scenarios, thereby enhancing work efficiency and reducing the economic burden on the user.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: March 12, 2024
    Inventor: Chuan-Cheng Ho
  • Patent number: 11911841
    Abstract: A double-acting friction stir spot welding apparatus according to the present disclosure includes a pin member (11) formed in a cylindrical shape, a shoulder member (12) formed in a hollow cylindrical shape and into which the pin member (11) is inserted, a rotary drive (57) that rotates the pin member (11) and the shoulder member (12) on an axis (Xr) coaxial with the pin member (11), and a linear drive (53) that reciprocates each of the pin member (11) and the shoulder member (12) along the axis (Xr). Oil solution (70) is disposed at at least one circumferential surface among an outer circumferential surface (11c) of the pin member (11), an inner circumferential surface (12b) of the shoulder member (12), an outer circumferential surface (12c) of the shoulder member (12), and an inner circumferential surface (13b) of a clamp member (13).
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: February 27, 2024
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Masahiro Miyake, Syuhei Yoshikawa, Yusuke Yoshida
  • Patent number: 11643308
    Abstract: The present invention relates to a tool for removing drive shafts from transmissions. In at least one embodiment, the present invention may remove a propeller shaft from an outboard engine. The present invention includes a upper housing, a lower housing and an inner guide conduit system, a portion of each define a jack support chamber and a viewing chamber, wherein the jack support chamber is adapted to house a hollow body jack and the viewing chamber is adapted to provide a view of the shaft while being removed from the shaft housing. One embodiment further includes an extension rod that may be secured at a first end to the drive shaft and secured at a second end to a piston of a hollow body jack so that when actuated the jack will remove the shaft from the shaft housing without damaging the engine or the gear housing.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: May 9, 2023
    Inventor: John P. DeMaria
  • Patent number: 11371287
    Abstract: A fluid operated drilling device for drilling a hole includes a hammer connected to a drill rod, and a rotation device to rotate the drill rod and the hammer. The hammer includes a tubular main body, a back head, a cylindrical piston housing, a reciprocating piston and a space between the piston. The piston housing is divided by an annular pressurizing portion into first and second space portions for elevating and striking the piston. First communication channels from a hollow portion of the piston into a second space between the piston and the main body discharge fluid between the piston and the main body. A method for drilling a hole using the fluid operated drilling device is also disclosed.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 28, 2022
    Assignee: PIRKAN LAATUPALVELU OY
    Inventor: Juhani Välisalo
  • Patent number: 11346155
    Abstract: A self-propelled drilling head for drilling in soil by means of a multi-stage method comprises the drilling head having a housing and a drilling head tip arranged in the housing, and a spacer provided on the drilling head tip, by means of which the drilling head tip is in contact with the housing in order to change the multi-stage method to a method with a reduced number of stages.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 31, 2022
    Assignee: TRACTO-TECHNIK GmbH & Co. KG
    Inventor: Meinolf Rameil
  • Patent number: 11273546
    Abstract: A valve seat has a first valve plate and a second valve plate detachably connected to the first valve plate. The first valve plate has a first trough and at least one pair of first dents, each pair including two first dents capable of respectively forming two first passages with a housing of a pneumatic hammer. The second valve plate has a second trough, at least one pair of second dents, at least one inlet tunnel, and at least two inlet channels. The second trough faces to and communicates with the first trough. Each pair of second dents includes two second dents capable of respectively forming two second passages with the housing. Each inlet tunnel is formed through the second valve plate and communicates with the two second passages. The at least two inlet channels communicate with the second trough and the at least one inlet tunnel.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: March 15, 2022
    Inventor: Jian-Shiou Liaw
  • Patent number: 10882174
    Abstract: The present invention provides a means to achieve enhanced control of repair forces in the automotive body repair industry. In particular, the present invention provides a modified slide hammer and a method to achieve repair through the controlled application of forces otherwise not attainable with existing embodiments. Additionally, the present invention provides an ease of use and versatility of application and mounting at the site of the work in conjunction with and in line with existing devices used in the repair process. The application of the present invention provides increased reliability in the delivery of intended forces at the site of the work. Further, the inherent isolation of repair forces to the intended site of the work by the use of the present invention reduces the likelihood of secondary damage, material waste, or catastrophic failure thereby also enhancing the safety of the operator and the effectivity of repair.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: January 5, 2021
    Inventor: Gary Claude Chartier
  • Patent number: 10415386
    Abstract: A unitary bit/holder assembly includes a reverse taper insert having a diamond coated tip mounted thereon that is received in an annular flange forwardmost portion of a holder body. In a modification, the diamond coated tip is received in a recess on a generally cylindrical forwardmost portion of the holder body.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: September 17, 2019
    Assignee: The Sollami Company
    Inventor: Phillip Sollami
  • Patent number: 10383639
    Abstract: A detachable medical cutting tool includes a shank portion, a cutting edge portion, a rotation prevention portion and a coherence keeping portion. The shank portion includes a connection portion. The cutting edge portion includes a combination portion to be combined removably with the connection portion of the shank portion. The rotation prevention portion is interposed between the connection portion of the shank portion and the combination portion of the cutting edge portion. The rotation prevention portion prevents from a rotation in a rotation direction. The coherence keeping portion keeps coherence when the connection portion of the shank portion and the combination portion of the cutting edge portion are combined with each other. The shank portion includes stainless steel. The cutting edge portion includes zirconia. The detachable medical cutting tool is configured to be combined with a high speed rotation apparatus to perform a perforation drilling at a bone tissue of a human body.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: August 20, 2019
    Inventor: Jug Hee Hwang
  • Patent number: 10378171
    Abstract: A caisson is modified to include side tabs thin can be gripped by side-mounted clamps on a vibratory hammer so that the caisson may be lifted into position from a horizontal position, oriented vertically, and driven into the ground without readjustment of the clamping of the vibratory hammer. An end cap installed permanently at the top of the caisson may provide an additional flange for receiving a lower clamp of the vibratory hammer to complete installation of the caisson, driving the caisson further into the earth until the tabs are buried in the ground. The flange may be sized to fit within a tower portion attached to the caisson eliminating the need for a replaceable flange system.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: August 13, 2019
    Assignee: American Transmission Company LLC
    Inventors: Todd Maersch, Jim Jacobi, Brent Lund, Matt Atkinson, Tyler Morgan, Hock Lim
  • Patent number: 10343452
    Abstract: Provided are a quick disconnect tool and a male connector. The tool includes a socket, detents in the socket and a collar to open and close the detents. The male connector fits within the socket and cannot rotate within the socket. The male connector includes a recess into which the detents can lock the male connector inside the socket.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: July 9, 2019
    Inventors: Henry Rodriguez, Edwin Rodriguez
  • Patent number: 10239195
    Abstract: A system configured to couple a hydraulic hammer and tool is disclosed. A hydraulic hammer may include a housing defining a chamber, elongate along a longitudinal axis, configured to receive a tool. The chamber may comprise an opening through which the tool may be inserted. A plurality of upper splines and a plurality of lower splines may be disposed, parallel to the longitudinal axis, on an inner surface of the chamber. A locking mechanism, comprising a rotatable locking ring, may be disposed within the chamber between the plurality of upper splines and the plurality of lower splines. The locking ring may comprise a plurality of locking ring splines disposed on an inner surface of the locking ring, wherein the plurality of locking ring splines are configured to align with the plurality of upper splines and the plurality of lower splines when the locking ring is rotated to an unlocked state.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: March 26, 2019
    Assignee: Caterpillar Inc.
    Inventor: Cody Moore
  • Patent number: 9719306
    Abstract: A bit for a percussive hammer includes an elongated shank, a head at a first end of the shank, and an array of lengthwise extending spline portions defining outwardly extending retention lugs at or toward a further end of the shank. At least a side face of at least one lug is blended into the shank of the bit.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: August 1, 2017
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Conny Seppala, Tomas Sh Jansson
  • Patent number: 9339924
    Abstract: A hammer mechanism including: a motor; a piston reciprocatingly driven by the motor; a ram reciprocatingly driven by the reciprocating piston via an air spring; a beat piece supported in an axially slideable manner within a beat piece support structure which, during the normal operation of the hammer mechanism, is repetitively struck by the ram and which transfers the impacts to a cutting tool when held by the tool holder; wherein the beat piece comprises a first impact surface and the beat piece support structure including a second impact surface, the first and second impact surfaces coming into contact with each other when the beat piece axially slides to its furthest position away from the ram; and wherein the shape of the two surfaces relative to each other is arranged so that there is a non-uniform amount of contact between the first and second surfaces around the longitudinal axis.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: May 17, 2016
    Assignee: Black & Decker Inc.
    Inventor: Andreas Friedrich
  • Patent number: 9205543
    Abstract: A driving head-changeable tool is provided, comprising an outer sleeve and an inner sleeve. The outer sleeve has an end peripheral edge and a non-circular circumferential inner wall. The end peripheral edge is formed with corner portions and blocking flanges. The inner sleeve has a non-circular circumferential outer wall. The inner sleeve is rotatably sleeved by the outer sleeve and has a first connecting end along a central axis. An inner wall of the first connecting end is formed with concaves extending axially. The non-circular circumferential inner and outer walls are nonrotatably abutted against each other. As viewed in an axial direction, each concave overlaps with one the blocking flange. When a driving head is inserted in the inner sleeve and the outer sleeve and the inner sleeve come close to each other, the driving head is blocked by the blocking flanges.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: December 8, 2015
    Assignee: YUAN LI HSING INDUSTRIAL CO., LTD.
    Inventors: Hui-Chien Chen, Chia-Yi Chen
  • Patent number: 8985908
    Abstract: Forcing equipment meant for forcing piles, steel profiles and other elongated objects into the ground which forcing equipment comprises a body (1) which can be attached to a working machine, a vibration device (6) attached to the body (1) with the help of damper cushions (9) and moveable grip jaws (10) adjusted to the mentioned vibration device (6) in order to grip the object to be forced at least with a side grip. The body (1) comprises an upper part (2) including an attachment arrangement (4), (5) for attaching it to the working machine and side parts directed from the upper part (2) downwards between which side parts the vibration device (6) and grip jaws (10); (17, 18) can be attached through cassette (7) comprising damping rubbers (9) in which case the attachments comprise pin/hole attachments (11, 23, 14); (20, 8) or (21, 8) which can be opened by detaching the mentioned pins (11, 20, 21).
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: March 24, 2015
    Assignee: Movax Oy
    Inventors: Pentti Kuivamäki, Mikko Lindeman
  • Patent number: 8955612
    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: Grant
    Filed: February 10, 2010
    Date of Patent: February 17, 2015
    Assignee: Onesteel Wire Pty Limited
    Inventor: Lawrence O'Toole
  • Patent number: 8936106
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage arrangement, a striker, and an anvil. The motor stores energy in the energy arrangement means and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: January 20, 2015
    Assignee: Medical Enterprises LLC
    Inventor: Christopher Pedicini
  • Patent number: 8936105
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: January 20, 2015
    Assignee: Medical Enterprises LLC
    Inventor: Christopher Pedicini
  • Patent number: 8839879
    Abstract: An anvil assembly for a tool includes an anvil having a body with an outer periphery and a head formed on a distal end of the body. The anvil assembly also includes a sleeve surrounding at least a portion of the outer periphery of the body. The sleeve has a distal end against which a tool element is abutted when the tool element is coupled to the head.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: September 23, 2014
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: William A. Elger, Matthew T. Bertsch
  • Patent number: 8763719
    Abstract: A pile driving system for driving a pile. The pile driving system comprises a housing assembly, a hammer, a helmet member, and a lifting system. The housing assembly defines at least one vent opening is arranged at a first vent location along the drive axis, and at least one vent opening is arranged at a second vent location along the drive axis. When the hammer drops and is above the first vent location, ambient air flows from the main chamber through the vent openings formed at the first and second vent locations. When the hammer is below the first vent location and above the second vent location, ambient air flows from the main chamber through the vent openings formed at the second vent location. When the hammer is below the second vent location, air within the main chamber is compressed to preload the helmet member.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 1, 2014
    Assignee: American Piledriving Equipment, Inc.
    Inventor: John L. White
  • Patent number: 8695726
    Abstract: An orthopedic impacting tool comprises a motor, a linear motion converter, an air chamber, a compression piston, an impacting element, an anvil element, and a broach adapter. The compression piston may cause the impacting element to apply controlled force on a broach adapter to create a precise opening for subsequently disposing a prosthesis in a patient. The tool may further comprise a detent for holding the impacting element in a position until a sufficient pressure is applied to release the impacting element. The tool allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of the broach and tool from the opening. A force adjustment control of the tool allows a user to increase or decrease the impact force. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: April 15, 2014
    Assignee: Medical Enterprises LLC
    Inventor: Christopher Pedicini
  • Patent number: 8672053
    Abstract: A tool holder for a hand supported impacting machine, which tool holder is suitable for receiving a tool having a shank portion on which is formed a retaining collar. The tool holder includes a tubular main body for receiving the tool and at least one locking element moveably mounted with respect to the main body and having an engaging portion moveable between a radially inner locked position in which the engaging portion is engageable with the retaining collar of the tool and a radially outer unlocked position in which a tool can be inserted into or removed from the tool holder. The tool holder additionally comprises a manually actuable sleeve moveable between a locked position in which the locking elements are held in their locked position and an unlocked position in which the engaging portions of the locking elements are moveable to their unlocked position.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: March 18, 2014
    Assignee: Black & Decker Inc.
    Inventor: Norbert Hahn
  • Patent number: 8602124
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: December 10, 2013
    Assignee: Medical Enterprises, LLC
    Inventor: Christopher Pedicini
  • Patent number: 8590633
    Abstract: A powered hammer includes a housing coupled to a tool holder having a front end, and including a motor, a cylinder, and a piston is slideably received within the cylinder. A drive mechanism converts rotary output of the motor into a reciprocating motion of the piston within the cylinder. A ram, slideably mounted within the cylinder forward of the piston, is reciprocatingly driven by the piston. A beat piece support structure supports a beat piece. The beat piece is repetitively struck by the reciprocating ram, which repetitively strikes an end of the tool to transfer momentum of the ram to the tool. The beat piece support structure allows the beat piece to slide between a first forward position and a second rearward position.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: November 26, 2013
    Assignee: Black & Decker Inc.
    Inventors: Ulrich Berghauser, Marc Holtwick
  • Patent number: 8496072
    Abstract: A drop hammer for driving a pile comprising a ram member supported within a housing chamber for movement relative to the housing member between the lower position and the upper position and a lifting system for moving the ram member from the lower position to the upper position. When the lifting system raises the ram member above a preload position, ambient air substantially freely flows into and out of the housing chamber through a vent port. When the ram member falls below the preload position, fluid is prevented from flowing through the vent port such that ambient air within a preload chamber portion of the housing chamber compresses to create a preload force that is transmitted to the pile. When the ram member moves into the lower position, an impact force generated by the ram member is transmitted to the pile.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: July 30, 2013
    Assignee: American Piledriving Equipment, Inc.
    Inventor: John L. White
  • Patent number: 8474121
    Abstract: An automated driver for tightening a fastener bolt includes a housing body including a handle. A chuck is rotatably connected to the housing body. An actuation system is operatively connected to the chuck for rotating the chuck. A tool element is held by the chuck, the tool element configured to engage the fastener bolt. An alignment tool is connected to the chuck. The alignment tool includes a chuck receiving portion having an opening extending therethrough in which the chuck is located and a bit receiving portion having an opening extending therethrough in which the tool element is located. An end of the tool element extends beyond an end of the bit receiving portion.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: July 2, 2013
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Andrew Ivor McGuire, Juan Manuel Molina
  • Patent number: 8459658
    Abstract: A hand-held power tool for at least percussively driving a working tool (2) along a percussion axis (A) and including a chuck (4) for receiving the working tool (2) and including a receiving sleeve (6, 6?) fixedly connected with the chuck (4) for joint rotation therewith and for limited axial displacement relative thereto, at least one locking member (7) radially displaceably supported in the receiving sleeve (6, 6?) for axially securing therein a shank (3, 3?) of the working tool (2) insertable in to the receiving sleeve (6, 6?), and an axially extending anvil (8) securable in the receiving sleeve (6, 6?) for closing a power tool side end of the receiving sleeve (6, 6?).
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: June 11, 2013
    Assignee: Hilti Aktiengesellschaft
    Inventor: Alexander Cycon
  • Patent number: 8393409
    Abstract: An orthopedic impacting tool comprises a motor, a linear motion converter, an air chamber, a compression piston, a striker, a detent and a broach adapter. The compression piston may cause the striker to apply controlled force on a adapter to create a precise opening for subsequently disposing a prosthesis in a patient. The detent may hold the striker in a position until a sufficient pressure is applied to release the striker. The tool allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of the broach and tool from the opening. A force adjustment control of the tool allows a user to increase or decrease the impact force. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: March 12, 2013
    Assignee: Ortho Technologies, LLC
    Inventor: Christopher Pedicini
  • Patent number: 8381830
    Abstract: A power tool having a housing, an electric motor disposed in the housing, and a spindle drivingly attached to the electric motor. The spindle includes a cavity adapted for receiving a bit therein and a window extending through the spindle in communication with the cavity. The power tool further has a retention device including a bit engaging member disposed within the housing and operable to extend through the window and retain a bit within the cavity. The power tool still further has an actuator operable by a user externally of the housing to disengage the bit engaging member from a bit received in the cavity and, finally, a mechanical interconnection system operably coupled between the actuator and the retention device to actuate the retention device in response to the actuator, wherein the mechanical interconnection is disposed within the housing.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 26, 2013
    Assignee: Black & Decker Inc.
    Inventors: Daniel Puzio, Aris C. Cleanthous, Daniel L. Krout, Robert G. Kusmierski
  • Publication number: 20120247060
    Abstract: An installation tool for a fence post has a body having a front wall, a top wall, and side walls extending from the top wall and a rear wall. A groove is formed in the front wall. A block is positioned within the front wall. The groove extends around the block. The groove has inner walls for accommodating a post of a first dimension. The block has outer walls for accommodating a post of a second dimension, where the first dimension and the second dimension are different from each other.
    Type: Application
    Filed: March 14, 2012
    Publication date: October 4, 2012
    Inventor: Gregg Yasher
  • Patent number: 8276683
    Abstract: A post driver for driving hollow posts, especially plastic posts, has an elongated central guide shaft and a hollow outer sleeve. The guide shaft has a length and diameter sized to pass fairly freely through but generally fill the post's hollow core to protect against the post buckling during pounding strokes. The outer sleeve annularly surrounds a substantial upper portion of the post for similar reasons. The outer sleeve transmits pounding strikes to a stop formation that rests stationary on the post's top end. That way, a user manually applying pounding strokes to the stop formation's upper surface transmits force to not only the post's top end but also the guide shaft's bottom end. Optionally, the guide shaft's bottom end is tipped and sticks out a little in order to pierce a pilot hole in the ground, and clear a path, for the post to follow.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 2, 2012
    Inventor: Christopher H. W. Roy
  • Publication number: 20120199372
    Abstract: According to an aspect of the present invention, there is provided an impact tool including: a motor; a hammer connected to an output portion of the motor; and an anvil to be struck by the hammer in a rotation direction and having a rotary shaft, the hammer striking the anvil in the rotation direction by driving the motor in pulses, wherein the anvil is provided in front of the hammer, wherein the hammer is driven in pulses by the motor, and wherein a rotation angle of the hammer is substantially proportional to a rotation angle of the motor.
    Type: Application
    Filed: July 29, 2010
    Publication date: August 9, 2012
    Applicant: HITACHI KOKI CO., LTD.,
    Inventors: Tomomasa Nishikawa, Nobuhiro Takano, Hideyuki Tanimoto, Kazutaka Iwata, Hironori Mashiko, Hayato Yamaguchi, Atsushi Nakagawa, Katsuhiro Oomori, Mizuho Nakamura, Hiroki Uchida, Saroma Nakano, Chikai Yoshimizu
  • Patent number: 8181713
    Abstract: A drop hammer for driving a pile. The drop hammer of the present invention comprises a housing member, a ram member, a helmet member, and a lifting system. The housing member defines a housing chamber and a vent port defining a preload position. The ram member is supported for movement within the housing chamber. When the lifting system raises the ram member above the preload position, ambient air substantially freely flows into and out of the housing chamber through the vent port. When the ram member falls below the preload position, ambient air within a preload chamber portion of the housing chamber compresses to apply a preload force on the inner portion of the helmet member. When the ram member moves into the lower position, the ram member impacts the helmet member to force the helmet member from the rest position to the impact position, thereby driving the pile.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: May 22, 2012
    Assignee: American Piledriving Equipment, Inc.
    Inventor: John L. White
  • Patent number: 8113296
    Abstract: An anti-rotation device resists relative rotation between a shank and a tool head within which the shank is supported in an impact tool, for example a rivet gun. The anti-rotation device includes a first anchor portion arranged to grip the shank between the mounting end and the working end of the shank and a second anchor portion arranged to grip the tool head in which the first and second anchor portions are formed integrally with one another of resilient material.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: February 14, 2012
    Inventor: Douglas A. Shore
  • Patent number: 8074732
    Abstract: A discontinuous drive power tool assembly for generating rotational torque. The tool assembly includes a spindle having a first end portion configured to receive a socket. The first end portion has a primary engaging surface and a tapered surface spaced from a distal end of the first end portion. The primary engaging surface and the tapered surface are configured to engage corresponding surfaces on the socket. The tool assembly also includes a pulse hammer engagable with a second end portion of the spindle that is opposite the first end portion, and a motor including a motor shaft engagable with the pulse hammer, the motor being configured to rotate the pulse hammer.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: December 13, 2011
    Assignee: Stanley Black & Decker, Inc.
    Inventors: Mark W. Lehnert, Paul Podsobinski, Lawrence J. Lehnert
  • Patent number: 7980322
    Abstract: An impact adaptor to convert a rock drill to an impact driver is described. The impact adapter has a boom coupling for securing the adapter in co-operating alignment with the shank of a drifter. The adapter has a casing for slidingly receiving and guiding an anvil therein from a top open end of the casing. The casing has an open bottom end adapted for receiving a top end section of a pile, tube or rod in the casing. Anvil supports are provided in the casing for retaining the anvil captive therein in the absence of the top end section of the pile, tube or rod. The casing has a predetermined length above the anvil supports to permit captive displacement of the anvil and displacement of the top section of the pile, tube or rod therein. The impact adapter is secured to the drifter in a movable or immovable manner and compensates for wear of the shank.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: July 19, 2011
    Inventor: Alain Desmeules
  • Patent number: 7975784
    Abstract: A drill bit assembly for fluid-operated percussion drill tools. The assembly comprises a percussion bit (1) having a head portion (3) formed with an axially extending stub shank (32). A drive bush (2) is releasably connectable to the bit head portion (3). Axially extending splines (35) on the drive bush (2) are slideably engageable with complementary splines (36) formed on a drive chuck (4) whereby rotational drive from the chuck (4) may be transmitted to the drive bush (2). The assembly further comprises engagement means on the chuck (4) adapted for connecting the chuck (4) to a drive means (5) of the fluid-operated percussion drill tool.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: July 12, 2011
    Assignee: Minroc Technical Promotions Limited
    Inventor: Joseph Purcell
  • Patent number: 7938195
    Abstract: An impact wrench includes a housing, a rotation motor, an output shaft, and an impact mechanism including an inertia drive member with an impact chamber, a drive socket coupling the drive member to the motor, and anvil formed integral with an output shaft and extending into the impact chamber, and a coupling member arranged to transfer kinetic energy from the drive member to the anvil, a lubricant provided in the impact chamber, and barrier forming cover element mounted on the drive member to seal off the impact chamber and prevent lubricant from being expelled from the impact chamber at rotation of the drive member.
    Type: Grant
    Filed: October 8, 2007
    Date of Patent: May 10, 2011
    Assignee: Atlas Copco Tools AB
    Inventor: Knut Christian Schoeps
  • Patent number: 7934567
    Abstract: A driving apparatus is disclosed for planting a vertically oriented shaft into a granular base. The driving apparatus includes an anvil integrally formed at an intermediate location on the shaft. A weight is attached on the shaft, above the anvil, in freely slidable engagement. The shaft is provided with a tapered lower end. With the lower end positioned adjacent to the granular base, the weights may be repeatedly propelled against the anvil, by sliding along the shaft in a hammering motion, to drive the shaft into the base. The shaft may serve to support an article such as a beach umbrella.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 3, 2011
    Inventor: John Madey
  • Patent number: 7832495
    Abstract: A tool assembly provided with a housing defining a chamber, and a reciprocating work tool arranged in the chamber, is disclosed. A tool retention member has an aperture through which the work tool extends. Engaging structure including mutually engaging protrusions on the housing and the tool retention member is configured to permit engagement of the tool retention member with the housing by relative rotation of the tool retention member and the housing. Retention structure on the work tool is configured to prevent removal of the work tool from the housing when the tool retention member is engaged with the housing. A locking structure is configured to lock the tool retention member and housing against relative rotation. A prestressing structure is located between the protrusions on the housing and a portion of the tool retention member and is configured to urge the tool retention member away from the housing.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: November 16, 2010
    Assignee: Caterpillar Inc
    Inventor: Lauritz Phillip Pillers, II
  • Patent number: 7726414
    Abstract: An air spring hammer device that includes a drive piston, moving axially back and forth, with a front face of hollow embodiment and a hammer piston moving in said hollow. A ventilation slot is embodied in a guide wall of the drive piston. The drive piston may be guided in a guide tube. The guide tube comprises several idle openings. A moving control element is arranged on the exterior of the guide tube, in which control openings, corresponding to the idle openings, are provided. In an idle operating mode, the control element is in an open position, via which the ventilation slot, the idle openings and the control openings can be brought into connection with the environment.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 1, 2010
    Assignee: Wacker Neuson SE
    Inventors: Rudolf Berger, Wolfgang Schmid
  • Publication number: 20100126745
    Abstract: The present invention provides both an impact switching function and a shaft locking function for use in an impact screwdriver. The impact screwdriver includes a housing, a motor located in the housing, a motor drive shaft driven by the motor, a hammer which can move axially and rotate around the motor drive shaft, a hammer anvil, an impact switching device and a shaft locking apparatus. The shaft locking apparatus has a mating member coupled with the hammer anvil, an engagement ring fixed to the housing and a middle member located between the mating member and the engagement ring. The shaft locking apparatus has a locked position, where the mating member is secured to the hammer anvil and also secured to the engagement ring and the housing.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 27, 2010
    Inventor: Yongbing Zhu
  • Patent number: 7712554
    Abstract: A percussive drill bit provided with an improved chuck assembly for a down-the-hole drill hammer. The bit has a head at its forward end with a shank extending from the head. The shank is screw threaded along its length. A reciprocating chuck is provided as a sleeve with internal screw thread as corresponding to those of the shank. The shank is releasably secured in the chuck with the read end of the shank providing a striking face. An arrangement of external splines on the chuck, and a retaining shoulder at its rear end, provide for the required guided movement of the chuck within a drill hammer wear sleeve.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: May 11, 2010
    Inventor: Bernard Lionel Gien
  • Patent number: 7694747
    Abstract: A drop hammer for driving piles. The drop hammer of the present invention comprises a housing member and a ram member. The housing member defines a housing chamber. The ram member is supported within the housing chamber for movement relative to the housing member between an upper position and a lower position. When the ram member moves into the lower position, the impact of the ram member drives the pile. When the ram member falls below a preload position between the lower and upper positions, fluid within a preload chamber portion of the housing chamber compresses as the ram member moves into the lower position.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: April 13, 2010
    Assignee: American Piledriving Equipment, Inc.
    Inventor: John L. White
  • Patent number: RE47963
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 28, 2020
    Assignee: DEPUY SYNTHES PRODUCTS, INC.
    Inventor: Christopher Pedicini
  • Patent number: RE47997
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 19, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Christopher Pedicini
  • Patent number: RE48184
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: September 1, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Christopher Pedicini
  • Patent number: RE48251
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 13, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Christopher Pedicini
  • Patent number: RE49666
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: September 26, 2023
    Assignee: DEPUY SYNTHES PRODUCTS, INC
    Inventor: Christopher Pedicini