Pulsation Caused By Mechanical Movement Patents (Class 173/201)
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Patent number: 12115630Abstract: A power tool including a motor and an impact mechanism. The impact mechanism is coupled to the motor and includes a hammer driven by the motor, and an anvil positioned at a nose of the power tool, and configured to receive an impact from the hammer. The power tool also includes a sensor assembly positioned at the nose of the power tool, and an electronic processor. The sensor assembly includes an output position sensor configured to generate an output signal indicative of a position of the hammer or the anvil. The electronic processor is coupled to the output position sensor and to the motor, and is configured to operate the motor based on the output signal from the output position sensor.Type: GrantFiled: November 13, 2023Date of Patent: October 15, 2024Assignee: Milwaukee Electric Tool CorporationInventors: John Stanley Dey, IV, Jacob Paul Schneider
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Patent number: 11110577Abstract: A fastener driver includes a housing having a handle portion. A motor is positioned within the housing. The fastener driver further includes an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder. The fastener driver further includes a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner. At least a portion of the drive train extends through the handle portion of the housing.Type: GrantFiled: November 16, 2018Date of Patent: September 7, 2021Assignee: Milwaukee Electric Tool CorporationInventors: Andrew J. Weber, James M. Wentzloff, Nicholas A. Albers, Bradley S. Helm, Troy C. Thorson
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Patent number: 10926393Abstract: A percussion tool comprises a housing and an electric motor positioned within the housing. The motor has a nominal outer diameter of up to about 80 mm and is operable to output at least about 2760 W. The percussion tool further comprises a battery pack supported by the housing for providing power to the motor. The battery pack includes a plurality of battery cells having a nominal voltage of up to 80 Volts and a sustained operating discharge current of between about 40 A and about 60 A. The percussion tool further comprises a percussion mechanism driven by the motor and including a striker supported for reciprocation in the housing. The percussion tool has a ratio of impact energy to mass that is greater than or equal to 2.5 Joules/kilogram.Type: GrantFiled: October 30, 2019Date of Patent: February 23, 2021Assignee: Milwaukee Electric Tool CorporationInventors: Matthew S. Zawisza, Andrew D. Van Hoorn, Ethan T. Zimany
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Patent number: 10913141Abstract: An impact tool includes a motor, a driving mechanism, and a vibration sensor. The driving mechanism is configured to perform a hammering operation of linearly driving a tool accessory along an impact-axis by power of the motor. The impact-axis extends in a front-rear direction of the impact tool. The vibration sensor is configured to detect vibrations. The vibration sensor is disposed such that the vibration sensor is capable of detecting vibrations of a first frequency among vibrations caused in the impact tool, and such that transmission of vibrations of a second frequency to the vibration sensor is suppressed. The vibrations of the first frequency result from the hammering operation. The second frequency is different from the first frequency.Type: GrantFiled: April 5, 2018Date of Patent: February 9, 2021Assignee: MAKITA CORPORATIONInventors: Hitoshi Iida, Masanori Furusawa, Hirokatsu Yamamoto, Ryo Umemoto, Yoshinori Sasaki, Akira Naito
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Patent number: 10583545Abstract: A power tool including a motor and an impact mechanism. The impact mechanism is coupled to the motor and includes a hammer driven by the motor, and an anvil positioned at a nose of the power tool, and configured to receive an impact from the hammer. The power tool also includes a sensor assembly positioned at the nose of the power tool, and an electronic processor. The sensor assembly includes an output position sensor configured to generate an output signal indicative of a position of the hammer or the anvil. The electronic processor is coupled to the output position sensor and to the motor, and is configured to operate the motor based on the output signal from the output position sensor.Type: GrantFiled: February 24, 2017Date of Patent: March 10, 2020Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: John Stanley Dey, IV, Jacob Paul Schneider
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Patent number: 10583544Abstract: A hand-held power tool device is described which includes an output unit, a striker, and a rotary percussion receiver which is designed for establishing a transfer of rotary percussions between the striker and the output unit, at least during a rotary percussion operation. It is provided that the hand-held power tool device includes a rotary percussion switch-off device which is designed for interrupting the transfer of rotary percussions from the striker to the rotary percussion receiver, at least during a hammer percussion operation.Type: GrantFiled: May 14, 2013Date of Patent: March 10, 2020Assignee: Robert Bosch GmbHInventor: Tobias Herr
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Patent number: 10569405Abstract: Provided is an impact tool which can perform control in accordance with working situations. The impact tool converts a torque of a brushless motor into a striking force and applies it to a tip tool. The impact tool includes: a motor control unit which makes detection about whether the tip tool is pressed against an object during the rotation of the brushless motor; and a motor control unit which performs speed increase control for increasing the rotational speed of the brushless motor when a state of pressing the tip tool against the object has been detected continuously for a predetermined time.Type: GrantFiled: September 29, 2015Date of Patent: February 25, 2020Assignee: KOKI HOLDINGS CO., LTD.Inventor: Atsuyuki Kikuchi
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Patent number: 10525577Abstract: 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.Type: GrantFiled: November 20, 2017Date of Patent: January 7, 2020Assignee: Nanjing Chervon Industry Co., Ltd.Inventors: Fukinuki Masatoshi, Jingdong Hao
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Patent number: 10518400Abstract: A work tool includes a driving motor, a rotary shaft member configured to be rotationally driven by the driving motor, a swinging member configured to be caused to swing by rotation of the rotary shaft member, a tool accessory driving mechanism configured to drive a tool accessory by swinging of the swinging member, a body housing the driving motor, the rotary shaft member, the swinging member and the tool accessory driving mechanism, and a vibration reducing mechanism configured to reduce vibration caused in the body. The vibration reducing mechanism includes a dynamic vibration reducer having an elastic member and a weight, and a connecting member connecting the weight and the swinging member. The vibration reducing mechanism is configured to reciprocate the weight via the connecting member by the swinging of the swinging member.Type: GrantFiled: January 27, 2016Date of Patent: December 31, 2019Assignee: MAKITA CORPORATIONInventor: Masanori Furusawa
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Patent number: 10059577Abstract: The present invention relates to a perforator for breaking a closing member at a gas outlet of a gas bottle to allow a gas to flow out. The perforator includes a cylindrical housing having three openings, namely, a first opening at a first end portion, a second opening at a second end portion which is opposite to the first end portion, and a third opening formed in a circumferential wall portion, an ignition device being fixed at the first opening, the second opening to be connected to the gas bottle and the third opening serving as a gas discharge portion, and when a pressure created by actuation of the ignition device is received, the first piston moving in an axial direction, and the second piston moving towards the second opening by receiving the movement of the first piston.Type: GrantFiled: April 6, 2015Date of Patent: August 28, 2018Assignee: DAICEL CORPORATIONInventors: Takao Kuroda, Tomohide Fujiwara, Akihiro Wakatsuki
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Patent number: 9937612Abstract: It is an object of the invention to provide an impact tool having a rational mechanism in an idling state. According to the representative invention, in an idling state defined as a state in which a tool accessory 119 is not pressed against a workpiece and an impact bolt 145 transmits a striking force to the tool accessory 119, the tool accessory retainer 510 moves with respect to a tool accessory holder 117 by movement of the tool accessory 119 in the longitudinal direction, so that the striking force is cushioned.Type: GrantFiled: September 1, 2015Date of Patent: April 10, 2018Assignee: MAKITA CORPORATIONInventors: Shinya Bito, Masanori Furusawa
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Patent number: 9827659Abstract: A driving tool includes a first piston slidably disposed within a cylinder chamber and having an elongated driving part configured to drive a struck material. A second piston is configured to generate compressed air within the combustion chamber. A compressed air supply passage enables communication between the compression chamber and the cylinder chamber. A valve member opens and closes the compressed air supply passage. A relay member mechanically connects an electric motor with the valve member. The valve member opens and closes the compressed air supply passage via the relay member.Type: GrantFiled: April 4, 2013Date of Patent: November 28, 2017Assignee: MAKITA CORPORATIONInventor: Tadasuke Matsuno
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Patent number: 9555530Abstract: A fastener driving apparatus includes an extensible polymer assembly and a fastener drive assembly, such that when said extensible polymer assembly is actuated (by a motor and linear motion converter), energy is stored as an extensible polymer of the polymer assembly extends in length and force from said extensible polymer is applied on said fastener drive assembly. When said extensible polymer reaches a sufficient extension, a retention means releases said fastener drive assembly and wherein said fastener drive assembly moves from a first position to a second position such that an anvil of the fastener drive assembly is capable of driving a fastener into a substrate.Type: GrantFiled: May 23, 2014Date of Patent: January 31, 2017Assignee: Tricord Solutions, Inc.Inventors: Christopher Pedicini, John Witzigreuter
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Publication number: 20150101835Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for controlling a pneumatic percussion mechanism. According to the disclosure, the control unit comprises at least one load estimation device.Type: ApplicationFiled: April 24, 2013Publication date: April 16, 2015Inventors: Rainer Nitsche, Antoine Vandamme, Thomas Winkler, Helge Sprenger, Haris Hamedovic, Wolfgang Fischer, Christian Bertsch, Mario Eduardo Vega Zavala, Ulli Hoffmann, Thilo Henke, Achim Duesselberg
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Patent number: 8997887Abstract: A power tool performs a predetermined operation by using a tool bit and has a grip part and a dust suction device. The dust suction device has a dust suction part that extends in an axial direction of the tool bit and sucks and collects dust generated during operation at a tip of the tool bit. The dust suction part can be moved between a first position in which the dust suction part covers a bit tip of the tool bit and a second position in which the bit tip is exposed. The dust suction device further has an operation mode switching mechanism that is capable of switching between a first operation mode in which the dust suction part is allowed to move between the first and second positions and a second operation mode in which the dust suction part is locked in the second position.Type: GrantFiled: October 19, 2009Date of Patent: April 7, 2015Assignee: Makita CorporationInventors: Masanori Furusawa, Yoshihiro Kasuya, Hajime Takeuchi
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Patent number: 8939341Abstract: A fastener driving apparatus includes a vacuum piston and a drive piston, which vacuum piston, when moved (by way of a motor and linear motion converter), draws a vacuum against the drive piston, which drive piston may be held in place by retention means. An anvil is coupled to the drive piston. The retention means is released electrically or mechanically at or near the point of maximum vacuum volume. This drive piston and anvil assembly is then driven by atmospheric pressure and may strike a fastener to drive it into a substrate. At least one position sensor may be used. Once the fastener is driven, the apparatus may reset to an initial position. At least one parasitic loss seal may be provided to reduce drag force on the drive piston, and a timed dwell may be provided for the vacuum piston for operation.Type: GrantFiled: May 23, 2014Date of Patent: January 27, 2015Assignee: Tricord Solutions, Inc.Inventors: Christopher Pedicini, John Witzigreuter
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Patent number: 8939229Abstract: A power tool is disclosed. The power tool has a striker, which is guided along an axis in a guide tube. A pneumatic chamber has a volume which varies with a movement of the striker. The pneumatic chamber is closed by the striker, the guide tube and a valve device. The valve device has in a flow channel a sealing element that is moveable between two positions in a bearing along the axis. The flow channel has a first cross-sectional area in a first of the two positions of the sealing element adjacent to a first mating surface of the bearing, and the flow channel has a second cross-sectional area in a second of the two positions of the sealing element adjacent to second mating surface of the bearing offset from the first mating surface along the axis. The second cross-sectional area is greater than the first cross-sectional area.Type: GrantFiled: June 9, 2011Date of Patent: January 27, 2015Assignee: Hilti AktiengesellschaftInventors: Markus Hartmann, Frank Kohlschmied, Christian Daubner
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Patent number: 8936106Abstract: 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: GrantFiled: July 16, 2014Date of Patent: January 20, 2015Assignee: Medical Enterprises LLCInventor: Christopher Pedicini
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Patent number: 8936105Abstract: 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: GrantFiled: July 16, 2014Date of Patent: January 20, 2015Assignee: Medical Enterprises LLCInventor: Christopher Pedicini
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Publication number: 20140318823Abstract: An orthopedic impacting tool comprises a motor, an energy storage means, a striker, and an anvil. The motor stores energy in the energy storage 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. 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: ApplicationFiled: July 16, 2014Publication date: October 30, 2014Inventor: Christopher Pedicini
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Patent number: 8739895Abstract: The machine tool includes a pneumatic percussion mechanism having a cup-shaped exciter cylinder (21) with an inner chamber (31) which is open in the direction of impact (26), and a free piston (22) which is movable in the inner chamber (31). A recess (32) and at least one ventilation opening (35), spaced at a distance from the recess (32) in the direction of impact (26), are provided in a shell-type wall (39) of the inner chamber (31). The free piston (22) includes a sealing element (53) which seals off the at least one ventilation opening (35) when the sealing element (53) is oppositely situated from the at least one ventilation opening (35), and which in the region of the recess (32) is separated at a distance from the shell-type wall (39) when the sealing element (53) is oppositely situated from the recess.Type: GrantFiled: May 25, 2010Date of Patent: June 3, 2014Assignee: Hilti AktiengesellschaftInventors: Markus Hartmann, Alexander John
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Patent number: 8733610Abstract: A fastener driving apparatus includes a vacuum piston and a drive piston, which vacuum piston, when moved (by way of a motor and linear motion converter), draws a vacuum against the drive piston, which drive piston may be held in place by retention means. An anvil is coupled to the drive piston. The retention means is released electrically or mechanically at or near the point of maximum vacuum volume. This drive piston and anvil assembly is then driven by atmospheric pressure and may strike as fastener to drive it into a substrate. At least one position sensor may be used. Once the fastener is driven, the apparatus may reset to an initial position. At least one valve may be included to dump the energy stored in the vacuum in the case of a jam condition, thus providing good safety profile.Type: GrantFiled: June 20, 2013Date of Patent: May 27, 2014Assignee: Tricord Solutions, Inc.Inventor: Christopher Pedicini
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Patent number: 8733469Abstract: A downhole tool comprises a pulse generator that can generate longitudinal pulses in a drill string. A poppet is longitudinally moved in and out of an orifice in the pulse generator reducing the flow of drilling mud temporarily, generating a longitudinal pulse. The longitudinal pulse generator may be combined with a conventional transverse pulse generator to create a pulse generator capable of generating pulses in both transverse and longitudinal directions.Type: GrantFiled: February 17, 2011Date of Patent: May 27, 2014Assignee: Xtend Energy Services, Inc.Inventors: Christopher Konschuh, Laurier E. Comeau
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Patent number: 8720602Abstract: The present invention relates to a pulse generating device for inducing a shock wave in a tool, wherein the said pulse generating device comprises an impact means (201; 301) for transferring energy to a drill string (202) connected to the said tool, and wherein the energy transfer gives rise to the said shock wave, in which the said energy is mainly constituted by elastic energy stored in the impact means (201; 301) and/or an energy store. The device comprises control means for controlling the interaction of the impact means (201; 301) with the drill string (202), wherein the said control means for controlling the interaction of the impact means (201; 301) with the drill string (202) comprises a motor (207; 307), and wherein the said motor (207; 307) is designed to, through rotation, alternately open ducts for pressurization and depressurization of at least one drive surface (205) acting upon the said impact means.Type: GrantFiled: December 17, 2008Date of Patent: May 13, 2014Assignee: Atlas Copco Rock Drills ABInventor: Fredrik Saf
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Patent number: 8720601Abstract: Pressurized air pick device with variable control that comprises a cylinder and piston assembly for actuating a picking member, and a distribution portion with variable control of the pressurized air to said cylinder and piston assembly, the distribution portion including an upper body, a lower ring and a movable fluid-distribution slider capable of sliding between the body and the ring, characterized in that the distribution portion is housed in the cylinder of the cylinder and piston assembly at the upper portion thereof and coaxially therewith, the variable control for the fluid is housed in the head of the cylinder closing the upper portion of the cylinder connected to a fluid-supply section, and said upper portion of the cylinder includes two channels for conveying pressurized air in tight communication with the distribution portion through the radial channels thereof.Type: GrantFiled: January 13, 2009Date of Patent: May 13, 2014Assignee: Sullair, LLCInventors: Alain Mucig, Patrice Charlat, Julien Liotier
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Patent number: 8695726Abstract: 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: GrantFiled: December 29, 2010Date of Patent: April 15, 2014Assignee: Medical Enterprises LLCInventor: Christopher Pedicini
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Patent number: 8684105Abstract: A technique is provided which improves durability in a power tool having a torque transmission device. The representative power tool has a torque transmission device 151. The torque transmission device 151 includes a projection 171 formed on one of opposed surfaces of a first rotating member 153 and a second rotating member 155 and protruding in a direction of a rotational axis, a recess 161 for receiving the projection 171, which is formed in the other of the opposed surfaces and recessed in the direction of the rotational axis, a projection-side engagement surface 175a formed on the projection 171, and a recess-side engagement surface 165a formed on the recess 171. Torque is transmitted when the projection-side and recess-side engagement surfaces 175a, 165a are engaged with each other, while the torque transmission is interrupted when the projection-side and recess-side engagement surfaces 175a, 165a are disengaged from each other.Type: GrantFiled: April 19, 2011Date of Patent: April 1, 2014Assignee: Makita CorporationInventors: Kiyonobu Yoshikane, Yoshitaka Machida
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Patent number: 8672050Abstract: The invention relates to a hand-held machine tool, particularly to a drill hammer and/or chisel hammer, having a hand-held machine tool housing and a transmission chamber with at least one transmission element arranged inside the hand-held machine tool housing. According to the invention, the hand-held machine tool includes a pressure equalization unit, provided for equalizing pressure in the transmission housing and serving at least partially for supporting the transmission element.Type: GrantFiled: September 3, 2008Date of Patent: March 18, 2014Assignee: Robert Bosch GmbHInventors: Otto Baumann, Christian Wiedemann, Hardy Schmid, Holger Frank, Frank Mueller, Roger Hahn
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Publication number: 20140014383Abstract: The hand-held power tool has a tool socket, a motor and a pneumatic striking mechanism. The striking mechanism has an exciter driven by the motor along a working axis, a striker coupled to the exciter via an air cushion, and an intermediate striker arranged between the striker and the tool socket in the striking direction. The striking mechanism also has a guide in which the intermediate striker is guided. The guide has a first sliding surface that guides a first section of the intermediate striker, and a second sliding surface that is arranged offset relative to the first sliding surface in the striking direction and that guides a second section of the intermediate striker. A radial dimension of the first section of the intermediate striker is greater than a radial dimension of the second section of the intermediate striker.Type: ApplicationFiled: July 10, 2013Publication date: January 16, 2014Inventors: Aaron WIEDNER, Markus Hartmann
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Patent number: 8602124Abstract: 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: GrantFiled: March 8, 2013Date of Patent: December 10, 2013Assignee: Medical Enterprises, LLCInventor: Christopher Pedicini
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Publication number: 20130319712Abstract: A hand-held power tool is disclosed. The tool has a pneumatic striking mechanism. The striking mechanism includes a motor-driven exciter, a guide tube and a striker. A pneumatic spring configured inside the guide tube between the exciter and the striker is circumferentially sealed pressure-tight by an inner surface of the guide tube. The exciter and/or the striker are configured as a piston guided by the inner surface. An inner surface of the guide tube is provided with a plurality of molded depressions.Type: ApplicationFiled: May 22, 2013Publication date: December 5, 2013Applicant: Hilti AktiengesellschaftInventors: Orlaw MASSLER, Josef Fuenfer
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Patent number: 8590633Abstract: 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: GrantFiled: June 27, 2007Date of Patent: November 26, 2013Assignee: Black & Decker Inc.Inventors: Ulrich Berghauser, Marc Holtwick
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Patent number: 8579043Abstract: It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. The battery-powered power tool performs an operation by movement of a tool bit 119 in an axial direction of the tool bit. The power tool includes a battery 110, a motor 111 that is driven by power supply from the battery 110, a mechanical arrangement 113, 115, 117 that drives the tool bit 119 by rotative power transmitted from the motor 111, and a tool body 103 that houses the motor 111 and the mechanical arrangement 113, 115, 117 and has a front end region in which the tool bit 119 is disposed. A sum of weights of the motor 111 and the battery 110 is smaller than a weight of the mechanical arrangement 113, 115, 117.Type: GrantFiled: October 13, 2010Date of Patent: November 12, 2013Assignee: Makita CorporationInventors: Toshiro Hirayama, Shinji Onoda, Hitoshi Iida, Kenji Abe, Munetoshi Goto
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Patent number: 8534376Abstract: A percussion mechanism that has a motor, a drive piston which can be moved to and fro in a guide cylinder by the motor, and a percussion piston. A coupling device is active between the drive piston and the percussion piston, via which coupling device the movement of the drive piston is transmitted to the percussion piston. The motor can be configured as a reluctance motor or as a synchronous motor. The motor can be actuable in such a way that different rotational speeds of the rotor can be generated within a percussion cycle and/or from percussion cycle to percussion cycle.Type: GrantFiled: July 28, 2009Date of Patent: September 17, 2013Assignee: Wacker Neuson Produktion GmbH & Co. KGInventors: Helmut Braun, Rudolf Berger
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Publication number: 20130161050Abstract: An orthopedic impacting tool comprises a motor, an energy storage means, a striker, and an anvil. The motor stores energy in the energy storage 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: ApplicationFiled: March 8, 2013Publication date: June 27, 2013Inventor: Christopher Pedicini
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Publication number: 20130153253Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The rotary hammer also includes a retainer received within the spindle for selectively securing the striker in an idle position in which it is inhibited from reciprocating within the spindle, and an O-ring positioned between the retainer and the spindle. The O-ring is disposed around an outer peripheral surface of the anvil. The O-ring is compressible in response to the striker assuming the idle position. The compressed O-ring imparts a frictional force on the outer peripheral surface of the anvil to decelerate the anvil.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Inventors: Benjamin Ludy, Andrew J. Weber
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Patent number: 8464805Abstract: The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke generating device having a first stroke element for a percussion drive is arranged in or on the intermediate shaft and can be driven by the intermediate shaft. Additionally, at least one other second stroke generating device having at least one second stroke element is provided for driving a counter oscillator. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element.Type: GrantFiled: November 19, 2008Date of Patent: June 18, 2013Assignee: Robert Bosch GmbHInventors: Otto Baumann, Hardy Schmid, Tobias Herr
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Patent number: 8430182Abstract: A hammer drill has a transmission housing 280 is formed from two clamshell halves of durable plastics or cast metal material. The transmission housing 280 is mounted on first and second damping springs 284 and 286 at its rearward end. The transmission housing 280 is also mounted on parallel rails (not shown) disposed within the tool housing 222 such that the transmission housing 280 can slide a small distance relative to the tool housing 222. The forward end of the transmission housing 280 has a generally part conical portion 290, which abuts a corresponding part conical portion 292 formed on the tool housing 222. The interface defined by conical portions 290 and 292 defines a stop against which the transmission housing 280 rests against the tool housing 222 in the inoperative condition of the hammer drill 220.Type: GrantFiled: December 29, 2005Date of Patent: April 30, 2013Assignee: Black & Decker Inc.Inventors: Martin Soika, Klaus-Dieter Arich, Uwe Nemetz
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Patent number: 8403075Abstract: The invention relates to a wobble drive of a hand-held machine tool, particularly a drilling or chipping hammer, having a drive shaft, a wobble bearing disposed on the drive shaft, and a wobble plate supported on the wobble bearing. At least two wobble fingers having wobble finger axes being provided on the wobble plate. The invention provides that the axes of the wobble fingers form an angle different from 180°.Type: GrantFiled: October 22, 2008Date of Patent: March 26, 2013Assignee: Robert Bosch GmbHInventors: Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
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Patent number: 8393409Abstract: 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: GrantFiled: May 8, 2012Date of Patent: March 12, 2013Assignee: Ortho Technologies, LLCInventor: Christopher Pedicini
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Patent number: 8360168Abstract: It is an object of the invention to provide a power tool that effectively prevents leakage of lubricant while regulating the internal pressure of a housing space for a driving mechanism. The object can be achieved by a representative power tool that includes a too bit 119, a driving mechanism 113, 115, an enclosed housing space 107a which houses the driving mechanism and in which lubricant is sealed in, and a path 151 which regulates pressure of the housing space 107a. On the path, a filter chamber 154 having a predetermined capacity, an inner passage 155c that communicates the filter chamber 154 with the housing space 107a, and an outer passage 159c that communicates the filter chamber 154 with the outside are formed. A filter 157 is disposed in the filter chamber 154 and spaced apart from a peripheral edge of an opening of the outer passage 159c which is open to the filter chamber 154, so that a space 161 is created on the opening edge side of the filter chamber 154.Type: GrantFiled: July 30, 2010Date of Patent: January 29, 2013Assignee: Makita CorporationInventors: Yasuhiro Kakiuchi, Shinya Bito
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Patent number: 8292002Abstract: The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or a chisel-action hammers. The power tool has a percussion axis and an intermediate shaft that is parallel to the percussion axis and which has a first stroke generating device having a first stroke element for a percussion drive. Additionally, at least one additional second stroke generating device having at least one second stroke element is provided for driving a counter oscillator that is arranged on or about the intermediate shaft and can be driven by the intermediate shaft. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element.Type: GrantFiled: November 18, 2008Date of Patent: October 23, 2012Assignee: Robert Bosch GmbHInventors: Otto Baumann, Hardy Schmid, Tobias Herr
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Patent number: 8281872Abstract: A drill hammer for the three operation modes of drilling, chiseling, and hammer-drilling has a motor with a motor shaft; a gear with an intermediate shaft, a driving gear wheel, a toothed slaving shaft , a shifting hub, and a driven gear wheel; a percussion mechanism with a wobble disk and a wobble gear wheel; and a driven shaft with a driving gear wheel and a drill chuck. The gear is configured to be changed over easily without axial displacement of running gears that mesh with one another so that the drill hammer is more robust, shorter or more compact, and lighter in weight. The drill hammer is thus simply and economically constructed and whose efficiency is not impaired by the gear shifting mechanism.Type: GrantFiled: September 25, 2006Date of Patent: October 9, 2012Assignee: Robert Bosch GmbHInventors: Achim Duesselberg, Andre Ullrich, Helmut Heinzelmann, Thomas Bernhardt, Michael Weiss, Tobias Herr
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Patent number: 8281873Abstract: The invention relates to a hand-held power tool, in particular a hammer drill which has a hammer drive, a rotary drive, a switching device, and a main output element. The switching device has a slide mechanism, which is designed for switching between different operating modes. According to the invention, the slide mechanism has at least one coupling element, which in at least one operating mode is directly coupled to a coupling element, the latter being rotationally fixed to the main output element.Type: GrantFiled: October 16, 2007Date of Patent: October 9, 2012Assignee: Robert Bosch GmbHInventors: Andre Ullrich, Helmut Heinzelmann, Juergen Lennartz, Michael Weiss, Tobias Herr
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Patent number: 8272452Abstract: A hammering tool includes, within its tool main body, a piston which reciprocates by using a motor as its drive force, a hammering member which carries out its hammering operation in linking with the reciprocating motion of the piston, and an intermediate member which transmits a hammering force of the hammering member to a top end tool mounted on the top end of the tool main body. The tool main body further includes a measuring device which measures a hammering state of the hammering member and a control device which controls the number of rotations of the motor. The control device, according to measurement results of the measuring device, determines the limit number of times of hammering where the hammering member becomes unable to follow the reciprocating motion of the piston, and thus controls the number of rotations of the motor.Type: GrantFiled: May 23, 2008Date of Patent: September 25, 2012Assignee: Max Co., Ltd.Inventors: Kouji Katou, Terufumi Hamano, Yoshitaka Otsuka, Akira Teranishi, Kazuya Sakamaki
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Patent number: 8267189Abstract: A hand-held power tool includes a motor-driven percussion mechanism. The percussion mechanism includes a guide tube (21) and a reciprocating driving member (22) displaceable in the guide tube (21) for driving, via a gas spring, an impact member (23) likewise displaceable in the guide tube (21). The percussion mechanism further includes a motor-driven eccentric wheel (17) rotatable about an axis (D) which is spaced from the percussion mechanism axis (S) in a direction perpendicular to the percussion mechanism axis (S) by a distance (X). A connection rod (29) is eccentrically supported on the eccentric wheel (17) and connected to the driving member (22) for converting a rotational movement of the eccentric wheel (17) into a reciprocating movement of the driving member (22).Type: GrantFiled: June 16, 2008Date of Patent: September 18, 2012Assignee: Hilti AktiengesellschaftInventors: Erwin Manschitz, Reinhard Schulz, Alexander Loeffler
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Patent number: RE46954Abstract: 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: GrantFiled: September 10, 2015Date of Patent: July 17, 2018Assignee: Medical Enterprises, LLCInventor: Christopher Pedicini
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Patent number: RE46979Abstract: 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: GrantFiled: September 10, 2015Date of Patent: August 7, 2018Assignee: Medical Enterprises, LLCInventor: Christopher Pedicini
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Patent number: RE48387Abstract: 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: GrantFiled: August 15, 2017Date of Patent: January 12, 2021Assignee: DEPUY SYNTHES PRODUCTS, INC.Inventor: Christopher Pedicini
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Patent number: RE48388Abstract: 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: GrantFiled: April 14, 2016Date of Patent: January 12, 2021Assignee: DePuy Synthes Products, Inc.Inventor: Christopher Pedicini