Patents by Inventor William F. Versaw

William F. Versaw 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).

  • Fluid driven pump
    Patent number: 5326234
    Abstract: A fluid driven pump includes an inlet, at least one expansion chamber for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom, a pumping chamber adjacent the expansion chamber for pumping in response to the expansion chamber's expansion and contraction, and an outlet for outletting pressurized fluid from the expansion chamber. A control system controls a flow of fluid from the inlet to the expansion chamber and a flow of pressurized fluid from the expansion chamber to the outlet. The outlet includes structure for gradually reducing the pressure of the fluid within a portion of the outlet to reduce blockage of the outlet due to freezing.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: July 5, 1994
    Assignee: Versa-Matic Tool, Inc.
    Inventors: William F. Versaw, Charles W. Taylor, Mitchell H. Jordan