Patents by Inventor Mark D. Slider

Mark D. Slider 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).

  • Patent number: 5667014
    Abstract: A subsea choke assembly for a well has a resilient closure seal within it which is used for retrieval purposes as well. The closure member is a metal resilient ring having tapered seal surfaces. The tapered seal surfaces locate between the choke body housing and the choke body bonnet. When securing the bonnet to the housing, the resiliency of the closure seal must be overcome, as well as the force required to insert an inner seal into its sealing surface within the bore. When the bonnet is released, the closure seal has sufficient spring force to push itself upward from the housing. In addition, it pushes the bonnet upward from closure seal. The choke body moves upward in unison with the bonnet, freeing the inner seal from its sealing surface.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: September 16, 1997
    Assignee: ABB Vetco Gray Inc.
    Inventors: Mark D. Slider, Gary L. Galle