Patents by Inventor Raymon E. Thompson

Raymon E. Thompson 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).

  • Pneumatic bellows pump with supported bellows tube
    Patent number: 5224841
    Abstract: A low contamination double bellows pump suitable for providing relatively constant pressure and delivery. The illustrated pump includes two pumping chambers with bellows arranged in opposed relationship on opposite sides of a central section. The central section acts as a valve body for inlet and outlet valves. The bellows are provided with interior bellows tubes which connect to the free ends of the bellows and slide upon stationary support pistons mounted within each tube. Bellows tube head pieces slide upon piston rods which support the pistons. Pneumatic pressure is controllably supplied to opposing sides of the pistons within the bellows tubes to power the bellows and effect pumping.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: July 6, 1993
    Assignee: Semitool, Inc.
    Inventors: Raymon E. Thompson, Karl Martin, Aleksander Owczarz