Patents by Inventor Paul L. Couvillion

Paul L. Couvillion 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).

  • KNITTED HIGH TEMPERATURE SEAL
    Publication number: 20170328475
    Abstract: A high temperature seal is disclosed which is made of knitted expanded graphite. The expanded graphite is knitted into a tube and then the tube is rolled back onto itself to prepare a torus. The torus is then die formed into a U shape. Various materials may be added to the knitted tube to enhance desirable qualities. A spring may be added to the torus to give compression force to the seal surface.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 16, 2017
    Applicant: Jim Ray Company
    Inventors: Paul L. Couvillion, Louis Loya
  • Sealing member with anti-extrusion means and protective coating
    Patent number: 4411439
    Abstract: A sealing member for sealing between a member movable relative to a body or housing. An elastomeric material is mounted in a space formed between the movable member and the housing. The elastomer serves as an initial primary seal at lower pressure differentials, while structure is provided with the sealing member to inhibit elastomer creep or extrusion at increased pressures.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: October 25, 1983
    Assignee: Jim Ray Company, Inc.
    Inventors: Paul L. Couvillion, James E. Ray