Patents by Inventor Ulrich Rettmar

Ulrich Rettmar 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: 9906095
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft relative to a housing of the gear-drive unit, having a first, rotatable blocking element and a second blocking element which is displaceable relative to the first blocking element by means of at least one electromagnet and at least one restoring element, in which the blocking elements in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device is embodied as a separate, independent structural unit, which can be mounted as a unit on the one hand onto the housing and on the other onto the shaft.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: February 27, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Recep Tarhan, Christian Meyer, Ulrich Rettmar, Gerd Walter, Stefan Demont
  • Publication number: 20140182981
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft relative to a housing of the gear-drive unit, having a first, rotatable blocking element and a second blocking element which is displaceable relative to the first blocking element by means of at least one electromagnet and at least one restoring element, in which the blocking elements in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device is embodied as a separate, independent structural unit, which can be mounted as a unit on the one hand onto the housing and on the other onto the shaft.
    Type: Application
    Filed: March 10, 2014
    Publication date: July 3, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Recep Tarhan, CHRISTIAN MEYER, ULRICH RETTMAR, GERD WALTER, STEFAN DEMONT
  • Patent number: 8746421
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft (14) relative to a housing (16) of the gear-drive unit (10), having a first, rotatable blocking element (32) and a second blocking element (34) which is displaceable relative to the first blocking element (32) by means of at least one electromagnet (44) and at least one restoring element (42), in which the blocking elements (32, 34) in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device (30) is embodied as a separate, independent structural unit (31), which can be mounted as a unit (31) on the one hand onto the housing (16) and on the other onto the shaft (14).
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: June 10, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Recep Tarhan, Christian Meyer, Ulrich Rettmar, Gerd Walter, Stefan Demont
  • Patent number: 7921977
    Abstract: Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft (14) with respect to a housing (16) of a gearbox drive unit (10), having a first blocking element (32) and having a second blocking element (34) which can be moved axially with respect to the first blocking element (32) by means of an electromagnet (44) and at least one return element (42), in order to produce a connection between the first blocking element (32) and the second blocking element (34) such that they cannot rotate with respect to one another, with the electromagnet (44) having an inner pole (47) which is surrounded by an electrical coil (45), and with the inner pole (47) having an axial projection (51) which engages in a corresponding opening (64) in the second blocking element (34), for axial guidance and centering.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: April 12, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Ulrich Rettmar, Ewald Becker, Peter Klobes, Uwe Velte
  • Patent number: 7594566
    Abstract: Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft (14) with respect to a housing (16) of the gearbox drive unit (10), having a first blocking element (32) which can rotate and having a second blocking element (34) which can be moved with respect to the first blocking element (32) by means of at least one electromagnet (44) and at least one return element (42), with the blocking elements (32, 34) engaging with one another in an interlocking form in the axial direction in the blocked state, and with at least one acoustic damping element (28) being arranged axially between the interlock (85) and the electromagnet (44).
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: September 29, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Ulrich Rettmar, Peter Klobes
  • Publication number: 20080251329
    Abstract: Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft (14) with respect to a housing (16) of the gearbox drive unit (10), having a first blocking element (32) which can rotate and having a second blocking element (34) which can be moved with respect to the first blocking element (32) by means of at least one electromagnet (44) and at least one return element (42), with the blocking elements (32, 34) engaging with one another in an interlocking form in the axial direction in the blocked state, and with at least one acoustic damping element (28) being arranged axially between the interlock (85) and the electromagnet (44).
    Type: Application
    Filed: November 15, 2006
    Publication date: October 16, 2008
    Inventors: Ulrich Rettmar, Peter Klobes
  • Publication number: 20080251346
    Abstract: Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft (14) with respect to a housing (16) of a gearbox drive unit (10), having a first blocking element (32) and having a second blocking element (34) which can be moved axially with respect to the first blocking element (32) by means of an electromagnet (44) and at least one return element (42), in order to produce a connection between the first blocking element (32) and the second blocking element (34) such that they cannot rotate with respect to one another, with the electromagnet (44) having an inner pole (47) which is surrounded by an electrical coil (45), and with the inner pole (47) having an axial projection (51) which engages in a corresponding opening (64) in the second blocking element (34), for axial guidance and centering.
    Type: Application
    Filed: November 15, 2006
    Publication date: October 16, 2008
    Inventors: Ulrich Rettmar, Ewald Becker, Peter Klobes, Uwe Velte
  • Publication number: 20070187193
    Abstract: A blocking device, and a gear-drive unit containing such a blocking device, and a method for producing such a gear-drive unit for blocking a rotary motion of a shaft (14) relative to a housing (16) of the gear-drive unit (10), having a first, rotatable blocking element (32) and a second blocking element (34) which is displaceable relative to the first blocking element (32) by means of at least one electromagnet (44) and at least one restoring element (42), in which the blocking elements (32, 34) in the blocked state mesh in the axial direction with one another by form-locking, and the blocking device (30) is embodied as a separate, independent structural unit (31), which can be mounted as a unit (31) on the one hand onto the housing (16) and on the other onto the shaft (14).
    Type: Application
    Filed: October 5, 2005
    Publication date: August 16, 2007
    Inventors: Recep Tarhan, Christian Meyer, Ulrich Rettmar, Gerd Walter, Stefan Demont
  • Patent number: 6570287
    Abstract: The invention relates to a spring element (10) for compensating for axial play in a motor shaft of an electric motor. The invention proposes embodying such a spring element (10) out of plastic and of one piece with a stop disk (12), which is connected via spring arms (14) to a support foot (16), and placing it, along with the support foot (16), onto a support sleeve (18) with which the spring element (10) can be press-fitted onto the motor shaft. The invention has the advantage that it eliminates the axial play in the motor shaft of an electric motor with a spring element (10) that is inexpensive to manufacture and easy to install (FIG. 1).
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: May 27, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Schiller, Herbert Martin, Michael Bohnert, Markus Boldt, Ulrich Rettmar
  • Publication number: 20030094871
    Abstract: The invention relates to a spring element (10) for compensating for axial play in a motor shaft of an electric motor. The invention proposes embodying such a spring element (10) out of plastic and of one piece with a stop disk (12), which is connected via spring arms (14) to a support foot (16), and placing it, along with the support foot (16), onto a support sleeve (18) with which the spring element (10) can be press-fitted onto the motor shaft. The invention has the advantage that it eliminates the axial play in the motor shaft of an electric motor with a spring element (10) that is inexpensive to manufacture and easy to install (FIG. 1).
    Type: Application
    Filed: January 31, 2002
    Publication date: May 22, 2003
    Inventors: Herbert Schiller, Herbert Martin, Markus Boldt, Ulrich Rettmar