Patents Represented by Attorney Eugene N. Ridle

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  • Packing means for a wellhead assembly
    Patent number: 3976130
    Abstract: A packing for a wellhead assembly to seal between a casing and a bore within the wellhead as the casing moves longitudinally in the wellhead in response to thermal conditions. The packing is mounted on the exterior free upper end portion of the casing inside the wellhead bore.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: August 24, 1976
    Assignee: ACF Industries, Incorporated
    Inventors: Joe G. Chambless, John W. Freeman