Patents by Inventor Jürgen Bieber

Jürgen Bieber 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).

  • Rotary slide valve for power assisted steering of motor vehicles
    Patent number: 6276487
    Abstract: A rotary shift or slide valve (1) for power steering systems of motor vehicles contains a rotary slide (4) linked to a valve input element (23). A control bush (7) is guided in an axial bore (6) of the rotary slide (4) and rotatable by a limited angle. The control bush (7) forms a rotation-fixed link with a valve output element (18). Between the rotary slide (4) and the valve output element (18), there is a centering device, which contains two centering elements (32, 33), which can be rotated against each other, and at least one anti-friction element (36) located between the two centering elements (32, 33). One of the centering elements (33) forms a fixed link with the reaction piston (37) and a rotation-fixed but axially displaceable link with the valve output element (18) via a metal bellows (38). The other centering element (32) forms a rotation-fixed and non-displaceable link with the rotary slide (4).
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: August 21, 2001
    Assignee: ZF Friedrichshafen AG
    Inventors: Jürgen Bieber, Werner Breitweg, Rainer Schänzel