Patents by Inventor Gunter Siebers

Gunter Siebers 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).

  • Electric and fluid controls for clutch and transmission
    Patent number: 3946842
    Abstract: A gear box having driving members and driven members and hydraulically actuated means for engaging the driving members with driven members to effect gear change is provided with a friction clutch for coupling the engine to the input shaft. The friction clutch is actuated by a piston slidably disposed in a cylinder. The piston is connected to the movable part of the clutch. The piston is actuated by a hydraulically operated main valve of relatively large volume which in turn is actuated by a smaller electromagnetically operated primary valve to provide for rapid actuation of the clutch.
    Type: Grant
    Filed: October 17, 1973
    Date of Patent: March 30, 1976
    Inventors: Gunter Siebers, Karl Prenzel, Hans Barthel