Patents by Inventor Manfred Rüffer

Manfred Rüffer 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).

  • Vacuum brake power booster with metal cup supporting reaction disk
    Patent number: 5014597
    Abstract: A metal cup accommodating a reaction disc and the end of a push rod is fixed with respect to a control valve housing of a vacuum brake power booster. The manner of fixation is of simple design, allowing the parts to be manufactured at low cost and offering ease of mounting. According to the invention a metal cup is supported in axial direction at the front side of the control valve housing and is retained by a retaining clip in a positive locking fit with the control valve housing.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: May 14, 1991
    Assignee: Alfred Teves GmbH
    Inventors: Manfred Rueffer, Bernd Toepperwien, Vladimir Dusil
  • Automotive vehicle brake system
    Patent number: 5005918
    Abstract: In a slip-controlled automotive vehicle brake system, to reduce the number of the valves used, while simplifying the system construction, the wheel brake cylinders are connected to relief chambers (123, 133, 124, 134) of compensating cylinders (120, 130), the connection between the master-brake-cylinder pressure chambers (80, 90) and the relief chambers (123, 124, 133, 134) being closable during slip control.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: April 9, 1991
    Assignee: Alfred Teves GmbH
    Inventors: Lothar Schiel, Manfred Rueffer