Patents by Inventor Christian Koepf

Christian Koepf 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).

  • Patent number: 9352460
    Abstract: A holding device for hand machine tools, in particular a drill and/or a chipping hammer holding device, includes a hammer tube and at least one blocking body, which, when installed, connects the hammer tube to at least one additional holding component. The blocking body is provided with at least one blocking surface that is curved around at least one load tipping axis.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: May 31, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Hubert Steinke, Lars Schmid, Johannes Schnitzler, Gerhard Meixner, Christian Koepf, Jan Koalick
  • Publication number: 20160141127
    Abstract: A DC voltage switch for high-voltage on-board electrical systems having a housing, at least two stationary contacts, and a moving contact, wherein, in each case, a first contact region of the stationary contacts is routed out of the housing and, in each case, a second contact region of the stationary contacts is arranged in a switching chamber of the housing with the moving contact, wherein the housing is hermetically encapsulated, wherein a cooling chamber which is separated from the switching chamber by a partition wall is arranged above the switching chamber, wherein the partition wall has at least one outlet opening and at least one inlet opening.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 19, 2016
    Inventors: Hendrik-Christian KÖPF, Andreas MINKE, Karsten HAUPT, Ernst-Dieter WILKENING
  • 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: 20120187639
    Abstract: A holding device for hand machine tools, in particular a drill and/or a chipping hammer holding device, includes a hammer tube and at least one blocking body, which, when installed, connects the hammer tube to at least one additional holding component. The blocking body is provided with at least one blocking surface that is curved around at least one load tipping axis.
    Type: Application
    Filed: April 30, 2010
    Publication date: July 26, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Hubert Steinke, Lars Schmid, Johannes Schnitzler, Gerhard Meixner, Christian Koepf, Jan Koalick
  • Patent number: 7886839
    Abstract: The hand-held power tool has a vibration-damped main handle. The hand-held power tool has a device for fastening the main handle to a main element configured so that when the main element moves out of a stationary position toward the main handle the main element swivels around at least one swivel axis so that it is guided along a trajectory that extends with a slant of at least 10° relative to a flat surface, which extends through a longitudinal tool axis and which has a surface normal oriented in a normal direction perpendicular to the longitudinal tool axis. As a result vibrations with a movement component perpendicular to the longitudinal tool axis are damped as well as vibrations that induce motion of the main element in the direction of the longitudinal tool axis toward the main handle.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: February 15, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Karl Frauhammer, Gerhard Meixner, Heiko Roehm, Willy Braun, Axel Kuhnle, Andreas Strasser, Ralph Dammertz, Joachim Schadow, Christian Koepf, Juergen Lennartz
  • Publication number: 20100176561
    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: Application
    Filed: April 22, 2008
    Publication date: July 15, 2010
    Inventors: Willy Braun, Christian Koepf
  • Publication number: 20090294144
    Abstract: A hand-held power tool has a main element; a main handle fastened to the main element, the main handle being supported such that the main handle is movable relative to the main element, the main element including a tool fitting that defines a tool axis and the center of gravity that defines a normal direction oriented perpendicular to the tool axis and pointing toward the center of gravity, the main element being moved out of a stationary position toward the main handle so that a portion of at least 10% by weight of the main element is guided with a movement component in the normal direction along a trajectory.
    Type: Application
    Filed: August 12, 2009
    Publication date: December 3, 2009
    Inventors: Karl Frauhammer, Gerhard Meixner, Heiko Roehm, Willy Braun, Axel Kuhnle, Andreas Strasser, Ralph Dammertz, Joachim Schadow, Christian Koepf, Juergen Lennartz
  • Publication number: 20080099222
    Abstract: The invention relates to a power tool comprising a housing (10) and a handle element (11) composed of a gripping member (12) and two lateral elements (13, 14) extending from the gripping member (12) to the housing (10). According to the invention, the handle element (11) is configured to pivot about a pivoting axis (15) that runs parallel to the longitudinal extension (27) of the gripping member (12). The invention also relates to a vibration damping device.
    Type: Application
    Filed: August 14, 2006
    Publication date: May 1, 2008
    Inventors: Ulrich Ranger, Gerhard Meixner, Klaus Dietz, Juergen Schlipf, Huber Steinke, Christian Koepf
  • Publication number: 20060185867
    Abstract: A hand-held power tool has a main element; a main handle fastened to the main element, the main handle being supported such that the main handle is movable relative to the main element, the main element including a tool fitting that defines a tool axis and the center of gravity that defines a normal direction oriented perpendicular to the tool axis and pointing toward the center of gravity, the main element being moved out of a stationary position toward the main handle so that a portion of at least 10% by weight of the main element is guided with a movement component in the normal direction along a trajectory.
    Type: Application
    Filed: January 5, 2006
    Publication date: August 24, 2006
    Inventors: Karl Frauhammer, Gerhard Meixner, Heiko Roehm, Willy Braun, Axel Kuhnle, Andreas Strasser, Ralph Dammertz, Joachim Schadow, Christian Koepf, Juergen Lennartz