Patents by Inventor Christopher L. Weaver

Christopher L. Weaver 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).

  • Model HCCV hydrostatic closed circulation valve
    Patent number: 7464758
    Abstract: Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open and closed positions by varying hydraulic pressure in the flowbore of the production assembly. The valve assembly is useful for selectively circulating working fluid into the annulus from the flowbore of the production assembly.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: December 16, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Joseph C. H. Yeo, Anthony J. Orchard, Keith E. Lewis, Christopher L. Weaver
  • Model HCCV hydrostatic closed circulation valve
    Patent number: 7063152
    Abstract: Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open and closed positions by varying hydraulic pressure in the flowbore of the production assembly. The valve assembly is useful for selectively circulating working fluid into the annulus from the flowbore of the production assembly.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 20, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Joseph C. H. Yeo, Anthony J. Orchard, Keith E. Lewis, Christopher L. Weaver