Patents by Inventor E. Robert Horwinski

E. Robert Horwinski 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).

  • Reciprocal pump with improved valve
    Patent number: 4416591
    Abstract: In a submersible pump of the type comprising a liquid inlet, a liquid outlet and an interconnecting valve chamber in which a valve member reciprocates to force liquid from the inlet to the outlet of the pump there is provided an improved valve member which uses a valve having an elongated body formed from a generally conical coil spring with abutting convolutions. The convolutions are opened when the valve member moves away from the pumping direction and closed when the valve member moves in the pumping direction.
    Type: Grant
    Filed: August 4, 1981
    Date of Patent: November 22, 1983
    Assignee: Gulf & Western Manufacturing Company
    Inventor: E. Robert Horwinski