Patents by Inventor Christopher Wittman

Christopher Wittman 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).

  • Self-adjusting friction clutch
    Patent number: 6405846
    Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: June 18, 2002
    Assignee: LuK Lamellen und Kupplungs GmbH
    Inventors: Wolfgang Reik, Paul Maucher, Ed Maucher, Karl-Ludwig Kimmig, Rolf Meinhard, Christopher Wittman
  • Self-adjusting friction clutch
    Publication number: 20020038749
    Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.
    Type: Application
    Filed: August 3, 2001
    Publication date: April 4, 2002
    Applicant: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Reik, Paul Maucher, Ed Maucher, Karl-Ludwig Kimmig, Rolf Meinhard, Christopher Wittman
  • Self-adjusting friction clutch
    Patent number: 6325192
    Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: December 4, 2001
    Assignee: Luk Lamellen und Kupplungsbau
    Inventors: Wolfgang Reik, Paul Maucher, Ed Maucher, Karl-Ludwig Kimmig, Rolf Meinhard, Christopher Wittman
  • Self-adjusting friction clutch
    Patent number: 6029787
    Abstract: A friction clutch wherein a pressure plate is axially movably but non-rotatably coupled to a cover and is biased by a diaphragm spring to urge the friction linings of a clutch disc against a flywheel which is driven by the engine of a motor vehicle. The diaphragm spring is tiltable relative to a seat which is carried by the cover, and a second spring is provided to bias a portion of the seat against the diaphragm spring. The latter can be moved axially of the flywheel to compensate for wear upon the friction linings, particularly when the flywheel is idle or is driven at a relatively low speed.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: February 29, 2000
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Reik, Paul Maucher, Ed Maucher, Karl-Ludwig Kimmig, Rolf Meinhard, Christopher Wittman