Patents by Inventor Herbert J. Bartz

Herbert J. Bartz 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).

  • Hydraulic actuation system
    Patent number: 4961481
    Abstract: A control system for a vehicle axle-to-wheel shock absorber includes a fluid pressure responsive actuator to variably compress friction elements; and a fluid pressure control unit having a body and plunger, and a rotary manual control, the plunger having a stem with threaded connection to the unit body to advance and retract the plunger as the manual control is rotated forwardly and reversely.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: October 9, 1990
    Inventor: Herbert J. Bartz