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).
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Patent number: 10315298Abstract: 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: GrantFiled: June 26, 2014Date of Patent: June 11, 2019Assignee: Robert Bosch GmbHInventors: Tobias Herr, Steffen Tiede, Benjamin Nikolas Fischle, Hardy Schmid, Gerd Schlesak, Selim Mustafa
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Patent number: 9969071Abstract: 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: GrantFiled: April 24, 2013Date of Patent: May 15, 2018Assignee: Robert Bosch GmbHInventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
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Patent number: 9815160Abstract: 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: GrantFiled: April 24, 2013Date of Patent: November 14, 2017Assignee: Robert Bosch GmbHInventors: 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
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Patent number: 9144875Abstract: 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: GrantFiled: November 17, 2010Date of Patent: September 29, 2015Assignee: Robert Bosch GmbHInventors: Gerd Schlesak, Christoph Klee, Juergen Lennartz
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Publication number: 20150158166Abstract: 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: ApplicationFiled: April 24, 2013Publication date: June 11, 2015Applicant: ROBERT BOSCH GMBHInventors: Gerd Schlesak, Juergen Lennartz, Christian Bertsch, Antoine Vandamme, Matthias Tauber
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Publication number: 20150136433Abstract: 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: ApplicationFiled: April 24, 2013Publication date: May 21, 2015Inventors: Rainer Nitsche, Matthias Tauber, Gerd Schlesak, Antoine Vandamme, Thomas Winkler, Christian Bertsch, Achim Duesselberg, Ulli Hoffmann, Thilo Henke, Juergen Lennartz, Helge Sprenger
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Publication number: 20150129248Abstract: 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: ApplicationFiled: April 24, 2013Publication date: May 14, 2015Inventors: 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
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Publication number: 20150000947Abstract: 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: ApplicationFiled: June 26, 2014Publication date: January 1, 2015Inventors: Tobias Herr, Steffen Tiede, Benjamin Nikolas Fischle, Hardy Schmid, Gerd Schlesak, Selim Mustafa
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Patent number: 8434565Abstract: 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: GrantFiled: November 18, 2008Date of Patent: May 7, 2013Assignee: Robert Bosch GmbHInventors: Joachim Hecht, Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
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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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Publication number: 20120279741Abstract: 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: ApplicationFiled: October 6, 2010Publication date: November 8, 2012Applicant: ROBERT BOSCH GMBHInventors: Gerd Schlesak, Carsten Diem, Willy Braun, Hardy Schmid, Holger Ruebsaamen, Michael Weiss, Jan Koalick, Peter Loehnert
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Publication number: 20110114345Abstract: 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: ApplicationFiled: November 17, 2010Publication date: May 19, 2011Inventors: Gerd SCHLESAK, Christoph Klee, Juergen Lennartz
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Publication number: 20110024149Abstract: 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: ApplicationFiled: November 18, 2008Publication date: February 3, 2011Inventors: Joachim Hecht, Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert
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Publication number: 20100270046Abstract: 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: ApplicationFiled: October 22, 2008Publication date: October 28, 2010Inventors: Gerd Schlesak, Juergen Lennartz, Stefan Holst, Klaus Kuespert