Patents by Inventor Willy Braun

Willy Braun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210347031
    Abstract: An actuating unit for releasing a battery device for a hand-held power tool having a locking element for locking the actuating unit and having an actuating element that is provided to move the locking element from a retaining state into a release state of the actuating unit. It is provided that in the release state, the locking element is held with a positive fit and/or with a frictional fit.
    Type: Application
    Filed: October 14, 2019
    Publication date: November 11, 2021
    Inventor: Willy Braun
  • Publication number: 20210268636
    Abstract: The disclosure relates to a machine tool, in particular a hand-held machine tool, comprising a housing and an electronics module, wherein the electronics module has a position-determining unit and a communications unit, wherein the electronics module can be supplied with energy via an at least partially independently formed energy unit. According to the disclosure, the electronics module is accommodated in an electronics housing, wherein the electronics housing is coupled to the housing of the machine tool.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 2, 2021
    Inventors: Willy Braun, Juergen Lennartz, Stephan Ulloa, Carsten Diem
  • Patent number: 10071468
    Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring, a damping mass, and a mechanism housing. The oscillation-damping device has at least two retaining parts that at least partly enclose the damping mass.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: September 11, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Alex Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 9694484
    Abstract: An electric machine tool includes a first actuating device and a second actuating device. The second actuating device is arranged at a distance from the first actuating device. The first actuating device is mechanically connected to the second actuating device by a switching connector which is configured to be loaded in tension only.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: July 4, 2017
    Assignee: Robert Bosch GmbH
    Inventor: Willy Braun
  • Patent number: 9640929
    Abstract: A brush holder for an electric motor includes a brush magazine forming a receiving space with a wall surface. A carbon brush having an end face and a side face is arranged in the receiving space. The brush holder also includes a spring, which is in contact with the end face and is configured to press the carbon brush in an extension direction of the receiving space. The brush holder also includes a pressing mechanism arranged on a pivot arm and configured to contact the side face and press the carbon brush by the force of the spring in a pressing direction against the wall surface. The pivot arm has a pivot shaft, to which an inner end of the spring is fastened. The pressing mechanism has a rolling surface configured to roll over the side face of the carbon brush when the carbon brush slides in the extension direction.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: May 2, 2017
    Assignee: Robert Bosch GmbH
    Inventor: Willy Braun
  • 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: 9358677
    Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: June 7, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 8905153
    Abstract: The invention relates to a method for operating power tool, particularly an electrically driven hand power tool, having at least one tool drive shaft for directly or indirectly rotationally driving a tool insert. The tool insert is received in a tool holder releasably connected to the tool drive shaft. The tool drive shaft can be coupled to a drive device via a clutch device. The clutch device is provided with at least two different limit torques, which are selectable by an operator. When the tool insert and/or the tool holder is changed out, the clutch device is reset to a lower limit torque of the at least two different limit torques, particularly the lowest possible limit torque.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: December 9, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Willy Braun, Juergen Lennartz
  • Publication number: 20140319961
    Abstract: A brush holder for an electric motor includes a brush magazine forming a receiving space with a wall surface. A carbon brush having an end face and a side face is arranged in the receiving space. The brush holder also includes a spring, which is in contact with the end face and is configured to press the carbon brush in an extension direction of the receiving space. The brush holder also includes a pressing mechanism arranged on a pivot arm and configured to contact the side face and press the carbon brush by the force of the spring in a pressing direction against the wall surface. The pivot arm has a pivot shaft, to which an inner end of the spring is fastened. The pressing mechanism has a rolling surface configured to roll over the side face of the carbon brush when the carbon brush slides in the extension direction.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 30, 2014
    Inventor: Willy Braun
  • Patent number: 8763722
    Abstract: The invention relates to a power tool, in particular an electrically operable hand-held power tool, having at least one tool drive shaft for direct or indirect rotary drive of an insert bit, with the insert bit being accommodated in a tool holder that is connected or detachably connected to the tool drive shaft, particularly in a replaceable fashion. At least one drive device and at least one clutch device that couples the at least one drive device to the at least one tool drive shaft is provided which has at least two different, user-selectable, limit torques. An actuating device is provided that makes it possible, with a replacement of the insert bit and/or a replacement of the tool holder, to reset the clutch device to a lower limit torque, preferably to the lowest possible limit torque.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: July 1, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Willy Braun, Juergen Lennartz
  • Patent number: 8739893
    Abstract: The invention relates to a multi-gear transmission device, particularly a two-gear transmission device, for transferring a drive torque from an input side to an output side, which transmission device has at least two selectable gear ratios. The multi-gear transmission device further has a multi-stage clutch device, particularly a two-stage clutch device, with at least two different, selectable limit torques. According to the invention, the multi-stage transmission device has at least two preferably switchable translating gear pairs, and the multi-stage clutch device is included in the translating gear pairs.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: June 3, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Willy Braun
  • Patent number: 8678104
    Abstract: The invention is based on a handheld power tool, having at least one vibration-cancelling device that has at least one cancellation spring and one cancellation mass. It is proposed that the cancellation mass is constructed of at least one first mass part and at least one second mass part.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: March 25, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 8672331
    Abstract: The invention relates to a tool holder for an electric tool, particularly for a chisel hammer and/or drill hammer. A tool receptacle is provided for receiving a cylindrical shaft of an insertion tool introduced through an insertion opening. The cylindrical shaft has at least two diametrically opposed detent depressions on its circumferential surface. The tool holder further has a locking device having at least one locking element, at least one blocking element and at least one restoring element. According to the invention, the locking device has at least two locking elements. Upon insertion of the cylindrical shaft of the insertion tool, the restoring element applies different forces to the locking elements of the locking device.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: March 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Willy Braun, Christian Koepf
  • Publication number: 20140027253
    Abstract: An electric machine-tool includes an anti-vibration handle casing. A mechanical actuating device and a locking device configured to lock the mechanical actuating device in at least one operating state of the electric machine-tool are arranged in the handle casing. The electric machine-tool also includes an electric switch configured to be moved by the mechanical actuating device into a switched-on and a switched-off position. The handle housing comprises a handle area extending along a longitudinal extension of the mechanical actuating device. The electric switch is arranged outside of the handle area.
    Type: Application
    Filed: June 3, 2011
    Publication date: January 30, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun
  • Publication number: 20130284477
    Abstract: A power tool device, in particular a hammer drill device and/or a chisel device, includes at least one torque limiting unit that is configured to limit a torque in a drivetrain in at least one operating state. The at least one torque limiting unit includes at least two force transmission mechanisms configured to transmit the torque in the at least one operating state. The at least two force transmission mechanisms have different transmission characteristics.
    Type: Application
    Filed: September 21, 2011
    Publication date: October 31, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun
  • Publication number: 20130206434
    Abstract: An electric machine tool includes a first actuating device and a second actuating device. The second actuating device is arranged at a distance from the first actuating device. The first actuating device is mechanically connected to the second actuating device by a switching connector which is configured to be loaded in tension only.
    Type: Application
    Filed: June 15, 2011
    Publication date: August 15, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun
  • Publication number: 20130192861
    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: Application
    Filed: April 18, 2011
    Publication date: August 1, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun
  • Publication number: 20120318551
    Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state.
    Type: Application
    Filed: October 22, 2010
    Publication date: December 20, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 8316957
    Abstract: A hand-held power tool has a main element having a tool axis, a center of gravity, and a normal axis which extends perpendicular to the tool axis and through the center of gravity. The tool axis and the normal axis define a plane of motion. A handle supported in the plane of motion such that it is movable relative to the main element. A spring unit connects the handle with the main element and includes a spring element. The handle has a handle body, a rotary element which connects the handle body and the main element. The rotary element is rotatable relative to the main element and to the handle body.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: November 27, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Axel Kuhnle, Karl Frauhammer, Willy Braun
  • Publication number: 20120286461
    Abstract: An oscillation reduction system for an electric tool includes a first substance that is arranged on an elastic element. The first substance is configured to reduce housing oscillations by providing a relative motion with respect to a housing of the electric tool. The oscillation reduction system further includes a second substance that can be driven depending on the relative motion of the first substance with respect to the housing. An electric tool includes the oscillation reduction system.
    Type: Application
    Filed: October 7, 2010
    Publication date: November 15, 2012
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun