Patents by Inventor Jerome J. Zawada

Jerome J. Zawada 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).

  • Solenoid operated hydraulic control valve
    Patent number: 5106053
    Abstract: A solenoid operated hydraulic control valve system including a solenoid operated valve having a specially ported spool valve to statically balance spool forces in the opened and closed positions.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: April 21, 1992
    Assignee: Borg-Warner Automotive Electronic & Mechanical Systems Corporation
    Inventors: Alan L. Miller, George H. Studtmann, Todd L. King, Kenneth R. Gallaher, Jerome J. Zawada, William P. Umlauf
  • Solenoid operated hydraulic control valve
    Patent number: 4988967
    Abstract: A solenoid operated hydraulic control valve which has a specially ported spool valve to statically balance spool force in the opened and closed positions, and a specially designed solenoid operator which includes very small ratios of gaps to cross-sectional areas for the working and non-working gaps between the armature and stator.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: January 29, 1991
    Assignee: Borg-Warner Automotive Electronic & Mechanical Systems Corporation
    Inventors: Alan L. Miller, George H. Studtmann, Todd L. King, Kenneth R. Gallaher, Jerome J. Zawada, William P. Umlauf
  • Method and apparatus for controlling displacement of a piston in a shock absorber
    Patent number: 4901828
    Abstract: A shock absorber for damping the movement of the body of an automobile is provided. The shock absorber comprises a pressure cylinder forming a working chamber operable to store damping fluid. The shock absorber further comprises a reciprocating piston disposed in the working chamber operable to divide the working chamber into first and second portions. An axially extending piston rod is disposed within the working chamber and is connected to the piston. Finally, the shock absorber includes an annular collar and a split ring for controlling the displacement of the piston.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: February 20, 1990
    Assignee: Monroe Auto Equipment Company
    Inventors: Robert J. Schmidt, Jerome J. Zawada, Jr.