Patents by Inventor Clark Robinson

Clark Robinson 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).

  • Wellbore lock system and method of use
    Patent number: 5617918
    Abstract: A lock assembly includes radially movable engagement or latch members configured to engage a profile within a subsurface nipple, and further includes one or more sealing assemblies. The sealing assemblies are radially expandable by enlarging the interior of diameter of the elements of the sealing assembly, such as by placing a mandrel of relatively enlarged diameter through an internal diameter of elements of the sealing assembly.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: April 8, 1997
    Assignee: Halliburton Company
    Inventors: Andrew Cooksey, Jim Williamson, Clark Robinson, Chris Dines, James Vick