Patents by Inventor Richard Gerard Van Ryper

Richard Gerard Van Ryper 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).

  • Fractured seal ring
    Patent number: 6176115
    Abstract: The present invention provides a seal ring for placement in the space between a radial groove of a cylindrical member and a housing forming a bore in which the cylindrical member is movably positioned, which is free of scoring and has a fracture line through its thickness to form opposing faces. The faces are rough and mesh together such that when the faces are forced into contact, the faces are then interlocked. Furthermore, the seal ring has true roundness to enable the seal ring to seal the space despite presence of the fracture line. The seal ring is made up of a rigid polymer such as a polyimide, polyamide, polyester, polyetheretherketone, polyamideimide, polyetherimide, polyphenylene sulfide, and polybenzimidazole. The seal ring of the present invention is capable of single ring sealing of the space between the bore and the radial groove. The present invention also provides a device for fracturing the seal ring.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: January 23, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Gerard Van Ryper, James Ronald Mott, Arnold Wayne Raymond, Christopher Scott Stenta
  • Fractured seal ring
    Patent number: 5988649
    Abstract: A seal ring for placement in the space between a radial groove of a cylindrical member and a housing forming a bore in which the cylindrical member is movably positioned, which is free of scoring and has a fracture line through its thickness to form opposing faces. The faces are rough and mesh together such that when the faces are forced into contact, the faces are then interlocked. Furthermore, the seal ring has true roundness to enable the seal ring to seal the space despite presence of the fracture line. The seal ring is made up of a rigid polymer such as a polyimide, polyamide, polyester, polyetheretherketone, polyamideimide, polyetherimide, polyphenylene sulfide, and polybenzimidazole. The seal ring of the present invention is capable of single ring sealing of the space between the bore and the radial groove. The present invention also provides a device for fracturing the seal ring.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: November 23, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Gerard Van Ryper, James Ronald Mott, Arnold Wayne Raymond, Christopher Scott Stenta