Patents by Inventor William F. Wanner, Sr., deceased

William F. Wanner, Sr., deceased 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).

  • Pump apparatus
    Patent number: RE33135
    Abstract: The present invention is directed to pump apparatus for purifying water. The apparatus includes a housing containing a reciprocating plunger pump with a permanently attached filtering module preferably containing a reverse osmosis element. A manifold with a hydraulic actuated shuttle which serves as the spool for a three way valve is attached to the pump housing. The valve provides alternate pressurization and exhaust for the rod side of the piston. The pump may be operated by a hand lever or by power mechanism.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: December 26, 1989
    Assignee: Recovery Engineering
    Inventors: William F. Wanner, Sr., deceased, William F. Wanner, Jr., trustee