Patents by Inventor Claus Umnus

Claus Umnus 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: 8448763
    Abstract: A housing-piston assembly for a coupling device, especially a wet-running, multi-plate clutch or a bridging clutch of a hydrodynamic coupling device, wherein the piston (4) is attached to a housing (2) by means of connecting elements (8) in such a way that it has a certain freedom of movement, and rivets (10, 12) are provided as fastening elements between the piston (4) and the connecting elements (8) and/or between the connecting elements (8) and the housing (2), and wherein at least one support element (20, 36, 70, 86) can be positioned in a riveting position between the piston (4) and the connecting elements (8) and/or between the connecting elements (8) and the housing (2) in such a way that anvil sections (18, 44, 74, 92) of the support element (20, 36, 70, 86) lie behind the set heads (14) of their associated rivets (10, 12). A method of assembling a housing-piston assembly is also provided.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: May 28, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Carsten Zuehl, Mike Scordino, Claus Umnus, Juraj Cuperka, Bernd Reinhardt, Ray Hamblin, Oliver Walter, Matthias Münch
  • Publication number: 20100193314
    Abstract: A housing-piston assembly for a coupling device, especially a wet-running, multi-plate clutch or a bridging clutch of a hydrodynamic coupling device, wherein the piston (4) is attached to a housing (2) by means of connecting elements (8) in such a way that it has a certain freedom of movement, and rivets (10, 12) are provided as fastening elements between the piston (4) and the connecting elements (8) and/or between the connecting elements (8) and the housing (2), and wherein at least one support element (20, 36, 70, 86) can be positioned in a riveting position between the piston (4) and the connecting elements (8) and/or between the connecting elements (8) and the housing (2) in such a way that anvil sections (18, 44, 74, 92) of the support element (20, 36, 70, 86) lie behind the set heads (14) of their associated rivets (10, 12). A method of assembling a housing-piston assembly is also provided.
    Type: Application
    Filed: January 14, 2010
    Publication date: August 5, 2010
    Applicant: ZF Friedrichshafen AG
    Inventors: Carsten ZUEHL, Mike Scordino, Claus Umnus, Juraj Cuperka, Bernd Reinhardt, Ray Hamblin, Oliver Walter, Matthias Münch
  • Patent number: 7093701
    Abstract: A bridging clutch for a clutch apparatus which has a hydrodynamic circuit in a clutch housing. The bridging clutch may have a piston which is arranged on a hub and which is connected to a piston mount, which is mounted on the clutch housing, such that it can be moved axially via axial force stores. The piston mount has cutouts between radial extensions in the circumferential direction for projections which are provided on the piston and which pass through the piston mount. Axial force stores engage behind the piston mount on its side facing away from the piston and are attached to the piston at one connecting end and have lever ends which act on contact surfaces of the piston mount with predetermined prestressing in the direction of the piston.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: August 22, 2006
    Assignee: ZF Friedrichshafen AG
    Inventors: Carsten Zuehl, Jason Kehrer, Claus Umnus
  • Publication number: 20050039998
    Abstract: A bridging clutch for a clutch apparatus which has a hydrodynamic circuit in a clutch housing. The bridging clutch may have a piston which is arranged on a hub and which is connected to a piston mount, which is mounted on the clutch housing, such that it can be moved axially via axial force stores. The piston mount has cutouts between radial extensions in the circumferential direction for projections which are provided on the piston and which pass through the piston mount. Axial force stores engage behind the piston mount on its side facing away from the piston and are attached to the piston at one connecting end and have lever ends which act on contact surfaces of the piston mount with predetermined prestressing in the direction of the piston.
    Type: Application
    Filed: August 16, 2004
    Publication date: February 24, 2005
    Inventors: Carsten Zuehl, Jason Kehrer, Claus Umnus