Patents by Inventor Richard T. Schmidt

Richard T. Schmidt 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).

  • Fluid seal with swellable material packing
    Patent number: 9085949
    Abstract: The present disclosure provides a casing seal for a wellhead, including a casing with an internal surface having an annular groove therein. A fluid seal is disposed in the annular groove and includes an internal bead for sealing against a cylindrical surface of an inner case or tube. A swellable material is disposed within the annular groove and surrounds the fluid seal. An energizing port is in communication with the annular groove for delivering fluid to the swellable material to cause the swellable material to expand and further load the fluid seal.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: July 21, 2015
    Assignee: Freudenberg Oil & Gas, LLC
    Inventors: Robert Angus Campbell, Richard T. Schmidt
  • Fluid Seal with Swellable Material Packing
    Publication number: 20140060805
    Abstract: The present disclosure provides a casing seal for a wellhead, including a casing with an internal surface having an annular groove therein. A fluid seal is disposed in the annular groove and includes an internal bead for sealing against a cylindrical surface of an inner case or tube. A swellable material is disposed within the annular groove and surrounds the fluid seal. An energizing port is in communication with the annular groove for delivering fluid to the swellable material to cause the swellable material to expand and further load the fluid seal.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 6, 2014
    Applicant: FREUDENBERG OIL & GAS, LLC
    Inventors: Robert Angus CAMPBELL, Richard T. Schmidt
  • Duel completion bop centralizer
    Patent number: 6374914
    Abstract: A centralizer for guiding a well servicing tool through the bore of a BOP stack or the like and into a radially eccentric position within a wellhead assembly, the centralizer comprising a mandrel having a top end which is connected to a running string and a bottom end to which the well servicing tool is connected, a collar having at least one eccentric hole through which the mandrel extends, the collar being rotatably connected to the mandrel, and an energy absorbing bumper supported above the collar and having at least one opening in alignment with the hole in the collar through which the top end of the mandrel projects; wherein the distance between the center of the collar and the center of the eccentric hole is selected to correspond to the radial distance between the center of the BOP bore and the eccentric position within the wellhead assembly; and wherein the outer diameters of both the collar and the bumper are selected to be only slightly smaller than the diameter of the BOP bore; such that the collar
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: April 23, 2002
    Assignee: FMC Corporation
    Inventors: Henry Wong, Gregory L. Glidden, Richard T. Schmidt