Patents by Inventor Gary W. Van Court

Gary W. Van Court 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).

  • Low friction linear clearance seal
    Patent number: 5822994
    Abstract: This invention provides a low friction linear clearance seal for use in closed cycle cryogenic coolers. The clearance seal comprises a cylinder, a piston mounted within the cylinder for reciprocating movement and a self lubricating polymer liner bonded to the piston which forms an effective seal around the piston. The clearance seal improves the sealing capability between the piston and the cylinder and reduces heat generated by the motion of the piston along the cylinder wall. The clearance seal also improves the performance and reliability of the cryogenic cooler.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: October 20, 1998
    Assignee: Litton Systems, Inc.
    Inventors: Daniel James Belk, Thomas S. Donahoe, Arthur R. Nelson, Gary W. Van Court