With Means For Rotating Tool Patents (Class 173/104)
  • Patent number: 10781917
    Abstract: A power tool includes a button useful to select a direction of rotation of the power tool. The button can be used to select between forward, reverse, and neutral. The power tool includes a housing which is coupled with an abutment structure which engages with the button. A sawtooth engagement is formed between the abutment structure and the button. The sawtooth engagement can be asymmetric in shape to provide different force vectors depending on whether the button is pushed in a first or a second direction. The sum of the resistive forces can be the same whether the button is pushed in the first or second direction, owing to the asymmetric forces caused by the sawtooth engagement which make up for differences in other internal resistive forces.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: September 22, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Thomas S. Dougherty, Jason Christopher Bartoszek
  • Patent number: 10773368
    Abstract: A drill comprising: a body, the body comprising a housing formed internally with at least two chambers; a rear handle mounted on the body; a tool holder mounted on the front of the body; an electric motor mounted in a first chamber, the electric motor comprising an end cap attached to a motor housing; a transmission mechanism mounted in a second chamber which is in driving connection with the electric motor, the transmission mechanism being driven by the electric motor when the electric motor is activated to either impart impacts to and/or rotate a cutting tool when held by the tool holder. The end cap engages with the housing to form a separating wall which separates the first and second chambers.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: September 15, 2020
    Assignee: Black & Decker Inc.
    Inventor: Michael G. Kunz
  • Patent number: 10737373
    Abstract: A hammer drill comprises a drive mechanism including a spindle, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, and a hammer lockout mechanism adjustable between a first mode and a second mode. The hammer drill further comprises a clutch adjustable between a first state and a second state. The hammer drill further comprises a collar rotatably coupled to the housing and movable between a first rotational position in which the hammer lockout mechanism is in the first mode and the clutch is in the first state, a second rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the first state, and a third rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the second state.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: August 11, 2020
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Ian Duncan, Ryan A. Dedrickson
  • Patent number: 10589407
    Abstract: A method for setting an expansion anchor by a power tool, and a power tool that performs the method, is disclosed. In an embodiment, the method includes exerting rotary impacts on the expansion anchor in order to expand an expansion sleeve in dependence on a first rotational speed until a tightening torque corresponds to a threshold value, exerting a predetermined number of rotary impacts on the expansion anchor in dependence on the first rotational speed, and exerting rotary impacts on the expansion anchor by the power tool in dependence on a generated second rotational speed for a predetermined period of time.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: March 17, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventor: Hans-Dieter Gaul
  • Patent number: 10588640
    Abstract: A medical device, and a ratchet for a medical device, include a torque-guiding element and a torque discharging element, between which a switchable toothed unit is arranged so that, in accordance with a switching position of the toothed unit, torque from the torque-guiding element is transferred to the torque discharging element, said toothed unit includes two torque transfer sleeves arranged in a nested manner and which are arranged and produced such that both can be brought into torque-transmitting contact with an intermediate sleeve.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: March 17, 2020
    Assignee: Aesculap AG
    Inventors: Jan Steinhauser, Ralf Pfister
  • Patent number: 10518399
    Abstract: A clutch device includes a guiding element, a first clutch element being capable of sliding relative to the guiding element, a second clutch element being capable of sliding relative to the guiding element, an elastic element including a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element, and a rotating element being capable of rotating about a first axis relative to the guiding element. The rotating element includes a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis, and a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 31, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventor: Yue Lv
  • Patent number: 10517629
    Abstract: Disclosed herein is a medical device. The medical device includes two coaxially aligned solenoids and a cannulated armature configured to be received within the two coaxially aligned solenoids.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: December 31, 2019
    Assignee: Gyrus ACMI, Inc.
    Inventors: David Church, Ahmad Alsaffar, Daniel Goldberg, Joel Willhite, Kevin Edwards
  • Patent number: 10342591
    Abstract: An orthopedic impacting tool including 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. Alternatively, the tool may comprise a gas spring assembly system for generating an impact force. 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 11, 2016
    Date of Patent: July 9, 2019
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Christopher Pedicini
  • Patent number: 10328560
    Abstract: The present invention provides a multi-mode drive mechanism. The multi-mode drive mechanism may be employed, for example, in a power tool, for driving a chuck supporting an end effector, such as a drill bit or spiral cut bit, for acting on a work surface. For example, when employed in a power tool, the mechanism can generate rotating, reciprocating, or simultaneous rotating and reciprocating motion. Cutting with simultaneous rotational and reciprocating motion lessens the potential for undesired walking or wandering of the cutting bit by actively removing debris from the cut. Additionally, multi-mode drive mechanisms provide increased functionality in a single tool to accommodate a variety of situations and materials. One aspect of the invention provides a multi-mode drive mechanism including: an input shaft, a reciprocating assembly, an output shaft, a reciprocating block, and a shift collar. The input shaft terminates in an input external spur gear.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 25, 2019
    Inventor: Brian Romagnoli
  • Patent number: 10286530
    Abstract: A safety wrench for coupling and uncoupling hammer union type connections employs a spring biased retractable bolt to apply a blow to the union lug. In use the bolt is retracted rearward to compress compression springs positioned within an internal spring bore in the bolt to a position away from the lug of the union to be rotated. When the bolt is disengaged from the ratchet mechanism, the compression springs rapidly extend to rapidly move the bolt forward to impact the union lug and rotate the union. The bolt may be retracted by a hydraulic or pneumatic cylinder, a hand lever, or a rack and pinion mechanism. Reversing the position of the safety wrench on the union lug will allow the union to be rotated in the opposite direction.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 14, 2019
    Inventors: Robert P. Fanguy, David J. Tilley
  • Patent number: 10239193
    Abstract: A handheld tool apparatus comprising a spindle blocking apparatus and a torque limiting unit that includes at least one limiting spring and a stop arrangement that is supported movably against the limiting spring. It is provided that the stop arrangement of the torque limiting unit nonrotatably secure a wedging arrangement of the spindle blocking apparatus.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: March 26, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventor: Tobias Herr
  • Patent number: 10124422
    Abstract: The holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: November 13, 2018
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Takayuki Azegami, Yoshihiko Kimura, Taro Abe
  • Patent number: 10016885
    Abstract: An impact tool which transmits an impact force to a tool bit supported by a casing includes: a cylinder which is attached to the casing and has an opening on one end side thereof to which the tool bit is inserted; an intermediate element which is provided in an inside of the cylinder so as to be able to move straight, has a projection projecting in a radial direction so as to regulate a range of the straight movement, and transmits the impact force to the tool bit; and passages and which communicate a space in an inside of the cylinder at a position nearer to the tool bit than the projection with the outside of the cylinder and penetrate through the cylinder in the radial direction.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: July 10, 2018
    Assignee: HITACHI KOKI CO., LTD.
    Inventor: Takahiro Ookubo
  • Patent number: 9962816
    Abstract: A pneumatic tool includes a housing that contains an installation tunnel, an air supplying channel and first and second air inlets, a control valve installed in the installation tunnel for shifting among first, second and third positions; a controller that is mounted on the control valve and has two paddles; a pushing rod that passes through the controller and the control valve; and a trigger that is attached to the pushing rod. The pneumatic tool provides the controller for a user to selectively operate with his/her left hand or right hand to perform forward/reverse switching and speed adjustment.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: May 8, 2018
    Assignee: TRANMAX MACHINERY CO., LTD.
    Inventor: Hsin-Chi Chen
  • Patent number: 9656378
    Abstract: A machine tool is disclosed. The machine tool has a tool receptacle for receiving a tool on a working axis, a housing, and a striking mechanism. An impact stop is provided for a beater or an intermediate beater. An impact absorber has two polymer-based absorber rings that are offset axially to one another and are disposed so that they overlap radially and has two iron-based disks disposed axially between the absorber rings.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: May 23, 2017
    Assignee: Hilti Aktiengesellschaft
    Inventors: Markus Hartmann, Manfred Ludwig, Franz Moessnang
  • Patent number: 9656380
    Abstract: A power tool includes a housing in which a motor is supported and an output shaft coupled to the motor that extends from the housing. A tool holder is secured to the end portion of the output shaft which is configured to releasably retain an accessory tool. The power tool includes an accessory change tool having a driver portion and a handle portion. The driver portion is used to install and remove the accessory change tool from the tool holder. The handle portion and the driver portion are configured to pivot into a folded position at which the handle portion is located adjacent the driver portion. A retainer assembly is incorporated into the housing that is configured to releasably retain the accessory change tool on the housing with the accessory change tool in the folded configuration.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: May 23, 2017
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventors: Agustin Monroy, Jaime Moreno, Edward Pchola, Daniel Shadegg, Saad Alam, Dale Selsor Di lulio
  • Patent number: 9630309
    Abstract: A pneumatic tool includes a handle body, an output unit having a driving head, a driving unit for driving the output unit, and a switching unit operable to change the rotational direction of the driving head. The handle body includes: a surrounding wall having a top surface and an axial space that has a central axis and that is adapted to permit the driving unit to be mounted therein; a mounting unit disposed at the top surface of the surrounding wall and adapted to permit the switching unit to be mounted therein; and a through hole formed vertically through the surrounding wall and in spatial communication with the axial space, the through hole being adapted to permit the output unit to be mounted therein.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 25, 2017
    Assignee: Basso Industry Corp.
    Inventors: San-Yih Su, Da-Jie Lin
  • Patent number: 9550281
    Abstract: A pneumatic tool has an outer casing, a selector valve, a switching button and a cover. The outer casing has two elongated holes formed through an external surface of the outer casing, and facing and communicating to each other. The selector valve is rotatably mounted in the outer casing and has a communicating hole and two connecting blocks. The connecting blocks are axially formed on and protrude from an external surface of the selector valve, align with each other and respectively face the elongated holes. The switching button is detachably connected to one of the connecting blocks and extends out of one of the elongated holes. The cover is detachably connected to the outer casing to cover the other elongated hole and has a shape corresponding to a shape of the external surface of the outer casing.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: January 24, 2017
    Inventor: Ming-Ta Cheng
  • Patent number: 9440345
    Abstract: A hand power tool device includes a hammer tube and a B-impact damping system. The B-impact damping system includes at least one damping mechanism configured to damp recoil energy. The damping mechanism is disposed at least partially radially outside of the hammer tube in at least one operating state.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 13, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Willy Braun
  • Patent number: 9103165
    Abstract: The present invention relates to a down-the-hole hammer comprising an external cylindrical outer wear sleeve (5), a sliding piston (8) mounted for reciprocating movement within the outer wear sleeve to strike a percussion bit (1) of a drill bit assembly located at the forward end of the outer wear sleeve.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: August 11, 2015
    Assignee: MINCON INTERNATIONAL
    Inventor: Joseph Purcell
  • Publication number: 20150144366
    Abstract: A hammer drill (101) comprises a main body (103) which houses a driving motor (110) and a driving mechanism and a handle (109) which is movable to the main body (103). Further, a coil spring (160) which biases the handle (109) is provided. In a state that the coil spring (160) biases the handle (109), the handle (109) is moved against the main body (103) in a longitudinal direction of a hammer bit (119) and vibration transmission from the main body (103) to the handle (109) is prevented.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventor: Yoshitaka MACHIDA
  • Patent number: 9010509
    Abstract: A powered ratchet drive for a ratchet wrench includes a pair of elongate pawls for driving an output member of the wrench. Each pawl may have a lower portion pivotally attached to a rocker and an upper portion comprising teeth for engagement with teeth of the output member to turn the output member. The upper portion of the pawl extends outward at an angle with respect to the lower portion. The ratchet may include a compression spring secured inside a cavity of each pawl for biasing the pawl into engagement with the output member. The ratchet also includes a reversing switch mechanism for selectively configuring the ratchet in a forward-driving configuration and in a reverse-driving configuration. The switch mechanism includes a cam disposed between the pawls. The cam has a groove for receiving one of the pawls during operation depending on the configuration of the ratchet.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 21, 2015
    Assignee: SP Air Kabushiki Kaisha
    Inventor: Shigeki Kobayashi
  • Publication number: 20150053448
    Abstract: Provided is a power tool including a housing body having a first side and a second side and housing a motor and has an overmold bumper formed on at least the first side of the housing body protruding outwardly from the first side of the housing body such that an outer surface of the overmold bumper defines an outermost point of the power tool in a direction orthogonal to a motor axis of the power tool. The overmold bumper has a longitudinal span of at least 60% of a total length of the housing body in a direction along the motor axis, is formed of an elastomeric material and includes raised indicia.
    Type: Application
    Filed: August 26, 2013
    Publication date: February 26, 2015
    Inventors: Jason F. BUSSCHAERT, Tylan A. TSCHOPP
  • Publication number: 20150041170
    Abstract: An impact tool performs a processing operation on a workpiece by carrying out an impact operation on a tool bit in a longitudinal axis direction. The impact tool includes a motor having a rotor and a stator, a tool main body housing the motor, a drive shaft parallel to a longitudinal axis of the tool bit and rotatably driven by the motor, and an oscillating member that is supported by the drive shaft and that carries out an oscillating movement in the axial direction of the drive shaft based on the rotational motion of the drive shaft. A tool drive mechanism is coupled to the oscillating member so that the oscillating movement of the oscillating member linearly moves the tool bit in the longitudinal axis direction. The motor is an outer rotor motor in which the rotor is disposed on an radially outer side of the stator.
    Type: Application
    Filed: December 7, 2012
    Publication date: February 12, 2015
    Applicant: MAKITA CORPORATION
    Inventors: Kiyunobu Yoshikane, Yoshitaka Machida, Shinji Onoda, Hitoshi Iida
  • Patent number: 8950508
    Abstract: A handheld power tool, including a tool socket on a drive shaft for purposes of holding a tool, the drive shaft executing a rotating and partially tangentially striking movement using a tangential striking mechanism drivable by a drive. The tangential striking mechanism has an anvil associated with the drive shaft and a hammer associated with the drive, movable with respect to each other so as to strike each other axially when under the effect of the force of at least one first spring, and to strike each other tangentially when the anvil and the hammer are rotated. The hammer has a main mass, and an extra mass that is under the effect of a second spring couplable to the main mass.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: February 10, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventors: Alexander Hoop, Hans Boeni, Dieter Profunser, Peter Brugger
  • Patent number: 8936107
    Abstract: A rotary tool includes a drive device, a driven member configured to be rotatably driven by the drive device, a spindle rotatably supported within a housing, an impact attenuation mechanism disposed between the driven member and the spindle and transmitting rotation of the driven member to the spindle while an impact applied to the driven member being attenuated, and a driven member support bearing rotatably supporting the driven member, so that the driven member can rotate relative to the spindle.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 20, 2015
    Assignee: Makita Corporation
    Inventor: Fumitoshi Numata
  • Publication number: 20150014011
    Abstract: A power tool comprises a housing having at least two housing parts and at least one recess, a portion of the recess provided by each housing part, and a bearing located in the recess. The power tool includes a seal comprising an elongate seal member located between the housing parts to seal at least a portion of the housing. The seal includes at least one polymeric extension part extending from the elongate seal member and in contact with an external part of the bearing without extending around the bearing. The polymeric extension part of the seal prevents the external part of the bearing from rotating with respect to the housing during use of the power tool.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 15, 2015
    Inventors: Ernst Staas, Stefan Gensmann, Achim Buchholz
  • Publication number: 20150000943
    Abstract: A hand-held power tool device comprises an impact tool unit, an impact detection unit, and a blocking detection unit. The impact tool unit is configured to drive an insertion tool at least partially in at least one of a rotational fashion and a translatory fashion. The impact detection unit is configured to detect at least one impact parameter, such as linear acceleration running at least substantially parallel to a processing axis of the insertion tool. The blocking detection unit is configured to detect at least one blocking parameter, such as at least one an angular acceleration about the processing axis of the insertion tool. The impact detection unit and the blocking detection unit are formed at least partially as one-piece.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 1, 2015
    Inventors: Carsten Diem, Hagen Philipp Keinath, Matthias Tauber
  • Publication number: 20140338946
    Abstract: A handheld tool apparatus comprising a spindle blocking apparatus and a torque limiting unit that includes at least one limiting spring and a stop arrangement that is supported movably against the limiting spring. It is provided that the stop arrangement of the torque limiting unit nonrotatably secure a wedging arrangement of the spindle blocking apparatus.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 20, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Tobias Herr
  • Publication number: 20140338944
    Abstract: A hand tool device has a tool spindle and a hammer mechanism which includes a hammer and at least one curve guide driving the hammer at least during a hammer drilling operation. The tool spindle has at least one bearing surface on which the hammer is movably supported in at least one operating state.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 20, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Tobias HERR
  • Publication number: 20140338945
    Abstract: A hand tool device has a hammer mechanism including a hammer, at least one curve guide which drives the hammer at least during the hammer drilling operation, and at least one hammer mechanism spring which (i) stores at least a part of an impact energy in at least one operating state, and (ii) holds the hammer in the peripheral direction in at least one operating state.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 20, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Tobias HERR, Heiko Roehm, Marco Braun
  • Patent number: 8887829
    Abstract: Disclosed herein is a hydraulic hand tool. The tool includes a frame, a hydraulic drive, a drive shaft, and a seal assembly. The hydraulic drive is connected to the frame and includes a housing. The drive shaft extends from the hydraulic drive. The seal assembly is located between the drive shaft and the housing. The seal assembly includes a first seal member, a second seal member, and a carrier ring. The first seal member is in contact with the housing. The second seal member is in contact with the drive shaft. The carrier ring has an outer annular groove and an inner annular groove. The first seal member is located within the outer annular groove. The second seal member is located within the inner annular groove. The carrier ring includes a polymer material configured to elastically deform in response to a hydraulic load from hydraulic fluid at the hydraulic drive.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 18, 2014
    Assignee: Hubbell Incorporated
    Inventors: John W. Ayer, Mark A. Chiasson
  • Patent number: 8887828
    Abstract: Various embodiments herein provide a remotely adjustable feed system for remotely controlling the movement of a tool head on a machining tool along an axis of motion by means of converting reciprocal linear motion, i.e., back and forth linear motion, into rotary motion. The rate of movement of the tool head along the axis of motion may be controlled by varying the distance of linear motion in each cycle of linear reciprocal motion and/or by varying the rate of linear reciprocal motion cycles per unit time. Alternatively, or in addition, the rate of movement of the tool head along the axis of motion may be controlled by varying the amount of rotary motion that results from a given amount of reciprocal linear motion. Additionally, in some embodiments, the movement of the tool head may be controlled by directly controlling the rotary motion that drives the tool head along the axis of motion.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: November 18, 2014
    Assignee: Climax Portable Machine Tools, Inc.
    Inventors: John W. Dillman, Garrett L. Headrick, David M. Briggs, Timothy S. Clements, Darren P. Weidman, Dominic M. Bertram
  • Publication number: 20140318821
    Abstract: A rotary power tool includes a housing, a spindle defining a working axis, and a motor supported by the housing. The motor is operable to drive the spindle. The rotary power tool also includes a handle movably coupled to the housing and a vibration isolating assembly disposed between the housing and the handle. The vibration isolating assembly attenuates vibration transmitted from the housing to the handle. A battery pack is removably coupled directly to the handle and configured to provide power to the motor.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Andrew R. Wyler, Jeremy R. Ebner
  • Patent number: 8857536
    Abstract: The invention describes a hand-held power tool having a drive train, which includes a motor with a rotor, a drive shaft, and a transmission. According to the invention, at least one flywheel mass is provided that is positionable rotationally symmetrical to the drive shaft and connectable to the drive shaft for co-rotation therewith.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 14, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Jens Brennenstuhl, Ralf Windsheimer, Heiko Roehm
  • Publication number: 20140290973
    Abstract: a pneumatic tool includes a plastic tool body, a metal front hood connected to and disposed in front of the plastic tool body so as to define an accommodating space therebetween, and an air motor disposed within the accommodating space. The air motor includes a front bearing unit and a rear bearing unit disposed behind the front bearing unit. At least one of the front and rear bearing units is connected fixedly to the metal front hood. The air motor further includes a cylinder body disposed between the front and rear bearing units and connected integrally to the one of the front and rear bearing units, and a rotor disposed rotatably within the cylinder body.
    Type: Application
    Filed: February 26, 2014
    Publication date: October 2, 2014
    Inventor: Johnson LIN
  • Patent number: 8800682
    Abstract: A power tool with a working head for holding a working element. The power tool includes a motor having a motor output shaft for driving said working element and a duct having an inlet locatable in proximity to a point of contact between the working element and a workpiece. A dust collection chamber has an inlet in fluid communication with an outlet from said duct, and an outlet in fluid communication with atmospheric air. A fan is operable to transport air from the inlet of said duct to the inlet of said dust collection chamber. A first drive wheel is mounted on the motor output shaft. A second, driven, wheel mounted on a second shaft and a drive belt connects the first, drive wheel to the second, driven wheel, for transmitting power from the motor output shaft to the second shaft. The fan is mounted on the second shaft.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 12, 2014
    Assignee: Black & Decker Inc.
    Inventor: Andrew Walker
  • Publication number: 20140182870
    Abstract: A handheld tool apparatus having a tool guidance unit, which has a tool spindle and a tool chuck, and having an impact mechanism which has a striker that in at least one operating state percussively drives the tool guidance unit. It is provided that a mass of the striker be at maximum two thirds as great as a mass of the tool guidance unit.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 3, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Tobias HERR
  • Patent number: 8757286
    Abstract: An impact tool includes a motor, a hammer casing with an opened rear end and a disk-shaped member coupled to the hammer casing to close the opened rear end and to rotatably support a spindle. A first engagement member is formed on an outer face of the disk-shaped member. A second engagement member is formed on an inner face of the recess and engaging with the first engagement member to restrict a movement of the hammer casing in a second direction parallel to a rotation axis of the spindle. A third engagement member is formed on an outer face of the hammer casing. A fourth engagement member is formed on an inner face of the housing body and engaging with the third engagement member so as to restrict a movement of the hammer casing in the first direction.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 24, 2014
    Assignee: Makita Corporation
    Inventors: Hidenori Nagasaka, Takuji Kimura, Katsushi Miyashita
  • Patent number: 8733467
    Abstract: A rock drilling machine equipped with an axial bearing having at least one axial piston for setting the axial position of a drill shank and for damping stress pulses returning from the rock. The axial bearing includes a module that is detachable in one piece from one installation direction. The axial bearing module includes all necessary seals, bearing surfaces, and a module frame. Supporting forces caused by the operation of the axial bearing are transmitted of support members in the module frame directly to the body of the rock drilling machine, which is a uniform piece at least at the axial bearing.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: May 27, 2014
    Assignee: Sandvik Mining and Construction Oy
    Inventors: Lars Kandelin, Timo Muuttonen, Pekka Saukko
  • Patent number: 8714279
    Abstract: An impact tool includes a motor, a hammer casing with an opened rear end and a disk-shaped member coupled to the hammer casing to close the opened rear end and to rotatably support a spindle. A first engagement member is formed on an outer face of the disk-shaped member. A second engagement member is formed on an inner face of the recess and engaging with the first engagement member to restrict a movement of the hammer casing in a second direction parallel to a rotation axis of the spindle. A third engagement member is formed on an outer face of the hammer casing. A fourth engagement member is formed on an inner face of the housing body and engaging with the third engagement member so as to restrict a movement of the hammer casing in the first direction.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: May 6, 2014
    Assignee: Makita Corporation
    Inventors: Hidenori Nagasaka, Takuji Kimura, Katsushi Miyashita
  • Patent number: 8672050
    Abstract: 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: Grant
    Filed: September 3, 2008
    Date of Patent: March 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Otto Baumann, Christian Wiedemann, Hardy Schmid, Holger Frank, Frank Mueller, Roger Hahn
  • Patent number: 8662197
    Abstract: The disclosure relates to a method of assembling a hand machine tool having (i) an intermediate flange that includes (i) at least one base body having a slot-shaped opening extending in a bearing position and in a bearing, (ii) an intermediate shaft assembly that includes an intermediate shaft and a wobble bearing having a wobble pin, and (iii) a drive piston. The method includes sliding the drive piston onto the wobble pin, introducing the wobble pin into the slot-shaped opening such that the drive piston slides into the at least one base body, and inserting, in an assembly direction corresponding to a direction of a longitudinal axis of the base body, the intermediate shaft of the intermediate shaft assembly into a second base body of the immediate flange.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: March 4, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Bernhardt, Holger Ruebsaamen, Andreas Schlegel
  • Patent number: 8651197
    Abstract: A manually operated hammer drill (1) includes a spindle (3) that drives a chuck (5) in a rotary manner about an axis of rotation (6) in a drilling mode, and includes a pneumatic hammer mechanism (4), that hammers against a tool inserted in the chuck (5) in a hammer mode. The hammer mechanism (4) has a piston (10) which performs reciprocating movements (12) parallel to the axis of rotation (6) in a cylinder (11) conformed inside the spindle (3) when hammer mode is activated. The piston (10) has at least one radial groove (21) in which an annular seal (22) is arranged.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 18, 2014
    Assignee: AEG Electric Tools GmbH
    Inventors: Armin Eisenhardt, Hans Klöpfer
  • Patent number: 8640786
    Abstract: A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill. Hammering action from the actuator and rotation from the drill are applied directly to material being drilled. In a second modality, a percussive augmenter includes an actuator that operates as a hammering mechanism that drives a free mass into the bit creating stress pulses that fracture material that is in contact with the bit.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 4, 2014
    Assignee: California Institute of Technology
    Inventors: Jack Barron Aldrich, Yoseph Bar-Cohen, Stewart Sherrit, Mircea Badescu, Xiaoqi Bao, James Samson Scott
  • Patent number: 8636079
    Abstract: A method of operating a rotary tool driven by a brushless motor including a DC brushless motor for rotationally driving a rotary bit, a torque setting clutch mechanism, a drive switch for drive-controlling a drive control circuit of the brushless motor, and a control means to rotationally drive the brushless motor by an operation of the drive switch and wherein the method includes a first step for stop-controlling of the drive control circuit, a second step for rotating forward or in reverse the brushless motor through the control and a third step for control-operating a semiconductor of an inverter circuit provided in the drive control circuit to short-circuit the magnetizing windings of the brushless motor, thus braking the rotor of the brushless motor and stopping the brushless motor.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: January 28, 2014
    Inventor: Katsuyuki Totsu
  • Patent number: 8622148
    Abstract: A hand-operated power tool, particularly a hammer drill (1), includes a drive motor (2), a tool spindle (3) to drive a tool in rotary manner, a rotary drive transmission (4) to couple the drive motor (2) to the tool spindle (3), a hammer mechanism (5) to drive the tool in percussive manner, a hammer mechanism transmission (6) to couple the drive motor (2) to the hammer mechanism (5), and a switching device (7) to activate and deactivate the hammer mechanism (5). The switching device (7) has a clutch (9) that is integrated in a force path (10) of the hammer mechanism transmission (6) and has an actuation stroke (11) for advancing and withdrawing the clutch (6), which stroke extends perpendicularly to the axis of rotation (8) of the tool spindle (3), or parallel to an axis of rotation (37) of an actuating element (28) that is rotated manually to actuate the switching device (7) for advancing and withdrawing the clutch (6).
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 7, 2014
    Assignee: AEG Electric Tools GmbH
    Inventor: Armin Eisenhardt
  • Publication number: 20130299206
    Abstract: A hammer mechanism has a clamping chuck and a snap die provided for the direct striking of an inserted tool. The snap die includes a coupling element for transmitting a rotary motion to the clamping chuck.
    Type: Application
    Filed: October 14, 2011
    Publication date: November 14, 2013
    Applicant: Robert Bosch GMBH
    Inventors: Joachim Hecht, Heiko Roehm, Martin Kraus
  • Patent number: 8548668
    Abstract: A control system is disclosed for use with a machine having a work tool and operating at a work site. The control system may have a sensor associated with the work tool and configured to generate a signal indicative of a position of the work tool, an offboard worksite controller, and an onboard controller in communication with the sensor and the offboard worksite controller. The onboard controller may be configured to receive from an operator an input indicative of a current task being performed by the machine, and track movement of a portion of the work tool corresponding with the operator input. The onboard controller may also be configured to communicate the tracked movement to the offboard worksite controller.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: October 1, 2013
    Assignee: Caterpillar Inc.
    Inventors: Bryan J. Everett, Craig L. Koehrsen, Rodney R. Richards, Steven J. Cook
  • Patent number: 8522893
    Abstract: A modularized ultrasonic vibration machining apparatus is provided, which includes a tool holder module. The tool holder module further includes: a housing, having a positioning pin disposed thereon; a tool holder linking part, disposed in the housing; a transmitting mechanism, disposed in the housing and linked to the tool holder linking part in a transmission manner; an expanding device, disposed in the housing and linked to the transmitting mechanism in a transmission manner; a piezoelectric element, disposed in the housing and linked to the expanding device; and an electrical connector, disposed in the housing and electrically connected to the piezoelectric element and the positioning pin. Therefore, the modularized tool holder has an internal vibration mechanism and closed circuit setting of power supply, is capable of being assembled and applied conveniently, and has good security, economical efficiency, and applicability in industry.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: September 3, 2013
    Assignee: Metal Industries Research & Development Centre
    Inventors: Zhong-Yi Yang, Hui-Ping Lin