Patents by Inventor Herman J. Geilen

Herman J. Geilen 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).

  • Pressure control device for anti-lock or anti-skid systems in motor vehicles
    Patent number: 5035469
    Abstract: A first control valve which is normally open connects a master cylinder connection to a wheel cylinder connection. A second control valve which is normally closed connects the wheel cylinder connection to a storing chamber for returning brake fluid and to an inlet passage of a return pump when it is in open position. The return pump communicates through an output passage with a damping chamber. The damping chamber is arranged in a valve receptacle for the first control valve, and the storing compartment is arranged in a valve receptacle for the second control valve.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: July 30, 1991
    Assignee: Lucas Industries public limited company
    Inventors: Herman J. Geilen, Klaus Glasmacher