Patents by Inventor Michael-Andreas GRUNWALD

Michael-Andreas GRUNWALD 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: 9193045
    Abstract: A tool attachment for mounting on a hand-held machine tool provided with a tool holder, the tool attachment having an output shaft and a base body at whose outer circumference a locking sleeve is disposed in a manner allowing it to rotate to release at least one assigned locking element; at the outer circumference of the base body, an anti-rotation unit is formed for the twist-proof mounting of the base body on a fastening unit assigned to the hand-held machine tool; on the anti-rotation unit and at an inner circumference of the fastening unit, complementary geometrical forms are provided which are configured to mesh with each other for the releasable, twist-proof mounting of the base body on the fastening unit.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: November 24, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Dietmar Saur, Michael-Andreas Grunwald
  • Patent number: 9149872
    Abstract: In a tool attachment, for fastening to an handheld machine tool equipped with a tool holding fixture, having an output shaft and a base body, which forms an inner cavity and on whose outer circumference an axially displaceable locking sleeve is situated, for releasing at least one associated locking element against a spring force of a spring element, which has a clamping ring, in the inner cavity, a anti-rotation locking unit is configured for the rotationally locked fastening of the base body to a fastening unit associated with the handheld machine tool, the anti-rotation locking unit and the fastening unit having complementary geometric forms, which are configured to engage with each other for the detachable rotationally locked fastening of the base body on the fastening unit; and the at least one associated locking element being situated in the vicinity of the anti-rotation locking unit.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 6, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Dietmar Saur, Michael-Andreas Grunwald
  • Patent number: 9097331
    Abstract: In a hand-held power tool having a planetary gearbox which is situated in a housing interior formed by a gear housing, at least one cross pin is fastened in the housing interior for axial support of the planetary gearbox in the gear housing.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: August 4, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Dietmar Saur, Joerg Welke, Michael-Andreas Grunwald
  • Patent number: 8978780
    Abstract: A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 17, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Michael-Andreas Grunwald, Marco Pawlowski, Joerg Welke, Dietmar Saur
  • Publication number: 20140174776
    Abstract: A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Michael-Andreas GRUNWALD, Marco PAWLOWSKI, Joerg WELKE, Dietmar SAUR
  • Patent number: 8636080
    Abstract: A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 28, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Michael-Andreas Grunwald, Marco Pawlowski, Joerg Welke, Dietmar Saur
  • Publication number: 20130093142
    Abstract: In a tool attachment, for fastening to an handheld machine tool equipped with a tool holding fixture, having an output shaft and a base body, which forms an inner cavity and on whose outer circumference an axially displaceable locking sleeve is situated, for releasing at least one associated locking element against a spring force of a spring element, which has a clamping ring, in the inner cavity, a anti-rotation locking unit is configured for the rotationally locked fastening of the base body to a fastening unit associated with the handheld machine tool, the anti-rotation locking unit and the fastening unit having complementary geometric forms, which are configured to engage with each other for the detachable rotationally locked fastening of the base body on the fastening unit; and the at least one associated locking element being situated in the vicinity of the anti-rotation locking unit.
    Type: Application
    Filed: September 11, 2012
    Publication date: April 18, 2013
    Inventors: Dietmar SAUR, Michael-Andreas GRUNWALD
  • Publication number: 20130065727
    Abstract: In a hand-held power tool having a planetary gearbox which is situated in a housing interior formed by a gear housing, at least one cross pin is fastened in the housing interior for axial support of the planetary gearbox in the gear housing.
    Type: Application
    Filed: December 7, 2010
    Publication date: March 14, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Dietmar Saur, Joerg Welke, Michael-Andreas Grunwald
  • Publication number: 20110079408
    Abstract: A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Inventors: Michael-Andreas GRUNWALD, Marco Pawlowski, Joerg Welke, Dietmar Saur