Patents by Inventor Jan Wittholz

Jan Wittholz 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).

  • Pull-type friction clutch with integrated clutch release device
    Patent number: 8590686
    Abstract: A pull-type racing clutch has an integrated clutch release device. A piston which can be actuated hydraulically is formed directly by an outer ring of a rolling bearing arrangement.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: November 26, 2013
    Assignee: ZF Friedrichshafen AG
    Inventor: Jan Wittholz
  • Pull-Type Friction Clutch With Integrated Clutch Release Device
    Publication number: 20110017566
    Abstract: A pull-type racing clutch has an integrated clutch release device. A piston which can be actuated hydraulically is formed directly by an outer ring of a rolling bearing arrangement.
    Type: Application
    Filed: July 26, 2010
    Publication date: January 27, 2011
    Applicant: ZF Friedrichshafen AG
    Inventor: Jan WITTHOLZ
  • Flexible pressing force transmission plate and method of manufacture
    Publication number: 20040262113
    Abstract: A pressing force transmission plate (126) for a friction clutch comprises an annular plate body (150) and at least one impingement area (152) for the introduction of a force exerted by an energy accumulator (130), preferably a diaphragm spring, wherein the plate body (150) and impingement area (152) are flexibly connected by a connection area (154), and wherein the plate body (150) and impingement area (152) form a leg spring arrangement.
    Type: Application
    Filed: June 22, 2004
    Publication date: December 30, 2004
    Applicant: Sachs Race Engineering GmbH
    Inventors: Thomas Rudolf, Horst Friedrich, Klaus Fischer, Jurgen Loiberbeck, Werner Selzam, Jan Wittholz, Arnold Huisjes
  • Pressure plate for a friction clutch
    Publication number: 20040200687
    Abstract: A pressure plate for a friction clutch includes a ring-like pressure plate body with a pressure surface on a first axial side for exerting pressure on friction elements, and at least one support element on a second axial side opposite the first axial side. The at least one support element is a separate element from the pressure plate. The at least one support element is arranged for receiving a pressure from a force-exerting arrangement such as a diaphragm spring.
    Type: Application
    Filed: March 5, 2004
    Publication date: October 14, 2004
    Applicant: Sachs Race Engineering GmbH
    Inventors: Thomas Rudolf, Klaus Fischer, Jurgen Loibersbeck, Werner Selzam, Jan Wittholz, Arnold Huisjes