Patents by Inventor William F. Wanner

William F. Wanner 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: 4534713
    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, 1984
    Date of Patent: August 13, 1985
    Inventor: William F. Wanner
  • Pressure control and unloader valve
    Patent number: 3953154
    Abstract: An improved pressure control valve and unloader valve incorporating a floating check valve which is responsive to a gradual restriction in the discharge line and is also responsive to the shock wave formed as a result of a sudden shut-off of the discharge line; and the combination of such a pressure control valve with a high pressure diaphragm pump.
    Type: Grant
    Filed: November 15, 1973
    Date of Patent: April 27, 1976
    Inventor: William F. Wanner
  • 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