Patents Represented by Attorney William H. Montgomery

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  • Temperature transient resistant seal
    Patent number: 4709933
    Abstract: A cylindrical seal ring 20 has an inwardly extending rib 60, and upwardly 66 and downwardly 82 extending cantilever arms, each carrying outwardly facing seal surfaces 68, 84. The cantilever arms preload the seals and support the seals while providing flexibility between the seal areas and the rib 60. Temperature transients are readily accommodated.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: December 1, 1987
    Assignee: Vetco Gray Inc.
    Inventors: Frank C. Adamek, Charles D. Bridges