Patents by Inventor Christoph Juretzka

Christoph Juretzka 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).

  • Hydrodynamic coupling device, especially a hydrodynamic torque converter
    Patent number: 6832673
    Abstract: A hydrodynamic coupling device, especially a hydrodynamic torque converter, includes a housing which is rotatable about an axis of rotation, a turbine wheel mounted for rotation with respect to said housing, and a bridging clutch for transmitting torque between the housing and the turbine. The bridging clutch includes a first friction element which is essentially fixed against rotation with respect to the housing, and at least one second friction element which is essentially fixed against rotation with respect to the turbine, the friction elements having respective friction surfaces which can be brought into contact with each other. A first channel, provided in one of the friction surfaces, has first channel sections with radially closed inner ends and second channel sections with radially closed outer ends.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: December 21, 2004
    Assignee: ZF Sachs AG
    Inventors: Roland Baumann, Christoph Sasse, Thomas Bauer, Steffen Engel, Christoph Juretzka
  • Hydrodynamic coupling device, especially a hydrodynamic torque converter
    Publication number: 20040035663
    Abstract: A hydrodynamic coupling device, especially a hydrodynamic torque converter, includes a housing which is rotatable about an axis of rotation, a turbine wheel mounted for rotation with respect to said housing, and a bridging clutch for transmitting torque between the housing and the turbine. The bridging clutch includes a first friction element which is essentially fixed against rotation with respect to the housing, and at least one second friction element which is essentially fixed against rotation with respect to the turbine, the friction elements having respective friction surfaces which can be brought into contact with each other. A first channel, provided in one of the friction surfaces, has first channel sections with radially closed inner ends and second channel sections with radially closed outer ends.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 26, 2004
    Applicant: ZF Sachs AG
    Inventors: Roland Baumann, Christoph Sasse, Thomas Bauer, Steffen Engel, Christoph Juretzka