Patents by Inventor Peter Bertsch

Peter Bertsch 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).

  • Dry roughing pump having a gas film bearing
    Patent number: 4873913
    Abstract: The present invention relates to a cryopump having a gas bearing formed in a clearance seal between a piston and a cylinder. The gas bearing is formed by forcing pressurized gas from a gas plenum through orifices to the clearance seal.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: October 17, 1989
    Assignee: Helix Technology Corporation
    Inventors: Gerald R. Pruitt, Peter Bertsch