Patents by Inventor Gerd Schlesak

Gerd Schlesak 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: 10315298
    Abstract: An impact mechanism device for a hand power tool comprises at least one impact mechanism including at least one driven cylinder and at least one piston driven in an axial direction by the at least one driven cylinder via a cam mechanism, and at least one planetary gearing configured to drive the at least one driven cylinder and the at least one piston. The at least one piston is positioned at least partially inside the at least one driven cylinder.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 11, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Herr, Steffen Tiede, Benjamin Nikolas Fischle, Hardy Schmid, Gerd Schlesak, Selim Mustafa
  • Patent number: 9969071
    Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for open-loop and/or closed loop control of a pneumatic percussion mechanism, and at least one operating condition sensor unit. According to the disclosure, the control unit is designed to detect at least one percussion mechanism parameter depending on measurement values of the operating condition sensor unit.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: May 15, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
  • Patent number: 9815160
    Abstract: A percussion unit for a rotary hammer and/or percussion hammer includes a control unit that is configured for open-loop and/or closed loop control of a pneumatic percussion mechanism. In at least one operating state in which the control unit changes from an idle mode to a percussion mode, the control unit is configured to adjust at least one operating parameter temporarily to a starting value.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: November 14, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Nitsche, Matthias Tauber, Antoine Vandamme, Gerd Schlesak, Helge Sprenger, Carsten Diem, Wolfgang Fischer, Haris Hamedovic, Juergen Lennartz, Christian Bertsch, Mario Eduardo Vega Zavala, Achim Duesselberg
  • Patent number: 9144875
    Abstract: The invention is based on a handheld power tool device, having at least one safety mechanism, which intervenes in an uncontrolled blocking situation, and which has a sensor unit. It is proposed that the sensor unit is provided for directly detecting at least one orientation parameter of a handheld power tool.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: September 29, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Schlesak, Christoph Klee, Juergen Lennartz
  • Publication number: 20150158166
    Abstract: A pneumatic percussion mechanism apparatus, in particular for a rotary and/or percussion hammer, includes a striker mounted so as to be movable in a percussion direction in a guide tube, and at least one venting unit which is configured to influence a movement of the striker. The venting unit has a setting unit configured to set a percussion intensity, and is further configured to influence, during a percussion operation, a venting of a percussion space adjoining the striker in the percussion direction in the guide tube.
    Type: Application
    Filed: April 24, 2013
    Publication date: June 11, 2015
    Applicant: ROBERT BOSCH GMBH
    Inventors: Gerd Schlesak, Juergen Lennartz, Christian Bertsch, Antoine Vandamme, Matthias Tauber
  • Publication number: 20150136433
    Abstract: Percussion unit, especially for a rotary hammer and/or percussion hammer, comprising a control unit which is designed for open-loop and/or closed loop control of a pneumatic percussion mechanism, and at least one operating condition sensor unit. According to the disclosure, the control unit is designed to detect at least one percussion mechanism parameter depending on measurement values of the operating condition sensor unit.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 21, 2015
    Inventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
  • Publication number: 20150129248
    Abstract: A percussion unit for a rotary hammer and/or percussion hammer includes a control unit that is configured for open-loop and/or closed loop control of a pneumatic percussion mechanism. In at least one operating state in which the control unit changes from an idle mode to a percussion mode, the control unit is configured to adjust at least one operating parameter temporarily to a starting value.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 14, 2015
    Inventors: Rainer Nitsche, Matthias Tauber, Antoine Vandamme, Gerd Schlesak, Helge Sprenger, Carsten Diem, Wolfgang Fischer, Haris Hamedovic, Juergen Lennartz, Christian Bertsch, Mario Eduardo Vega Zavala, Achim Duesselberg
  • Publication number: 20150000947
    Abstract: An impact mechanism device for a hand power tool comprises at least one impact mechanism including at least one driven cylinder and at least one piston driven in an axial direction by the at least one driven cylinder via a cam mechanism, and at least one planetary gearing configured to drive the at least one driven cylinder and the at least one piston. The at least one piston is positioned at least partially inside the at least one driven cylinder.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Tobias Herr, Steffen Tiede, Benjamin Nikolas Fischle, Hardy Schmid, Gerd Schlesak, Selim Mustafa
  • Patent number: 8434565
    Abstract: The invention relates to a hand-held power tool, especially a rotary hammer and/or chisel hammer. The hand-held power tool is provided with a vibration dampening unit having a first absorber mass unit with a first vibration dampening direction and at least one second absorber mass unit with a second vibration dampening direction. The hand-held power tool in particular has the first vibration dampening direction of the first absorber mass unit disposed as substantially parallel to the second vibration dampening direction of the second absorber mass unit.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: May 7, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Hecht, Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
  • Patent number: 8403075
    Abstract: 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: Grant
    Filed: October 22, 2008
    Date of Patent: March 26, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
  • Publication number: 20120279741
    Abstract: An electric tool includes a vibratory means which is configured to impart a counteracting vibration which counteracts a housing vibration of the electric tool. A vibration-relevant characteristic of the vibratory means can be adapted during the operation of the electric tool in such a way that the amplitude, the phase position and/or the frequency of the counteracting vibration varies with a change in the vibration-relevant characteristic. The vibratory means of the electric tool has a natural frequency which can be varied by variation means of the electric tool. A method for compensating housing vibrations, in particular of the electric tool, includes imparting a counteracting vibration by a vibratory means which counteracts a housing vibration of the electric tool. The amplitude, the phase position and/or the frequency of the counteracting vibration is varied during the operation of the electric tool.
    Type: Application
    Filed: October 6, 2010
    Publication date: November 8, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Gerd Schlesak, Carsten Diem, Willy Braun, Hardy Schmid, Holger Ruebsaamen, Michael Weiss, Jan Koalick, Peter Loehnert
  • Publication number: 20110114345
    Abstract: The invention is based on a handheld power tool device, having at least one safety mechanism, which intervenes in an uncontrolled blocking situation, and which has a sensor unit. It is proposed that the sensor unit is provided for directly detecting at least one orientation parameter of a handheld power tool.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 19, 2011
    Inventors: Gerd SCHLESAK, Christoph Klee, Juergen Lennartz
  • Publication number: 20110024149
    Abstract: The invention relates to a hand-held power tool, especially a rotary hammer and/or chisel hammer The hand-held power tool is provided with a vibration dampening unit having a first absorber mass unit with a first vibration dampening direction and at least one second absorber mass unit with a second vibration dampening direction. The hand-held power tool in particular has the first vibration dampening direction of the first absorber mass unit disposed as substantially parallel to the second vibration dampening direction of the second absorber mass unit.
    Type: Application
    Filed: November 18, 2008
    Publication date: February 3, 2011
    Inventors: Joachim Hecht, Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
  • Publication number: 20100270046
    Abstract: 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: Application
    Filed: October 22, 2008
    Publication date: October 28, 2010
    Inventors: Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert