Patents by Inventor Mark F. Gravouia

Mark F. Gravouia 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).

  • SOLID RUBBER PACKER FOR A ROTATING CONTROL DEVICE
    Publication number: 20100307772
    Abstract: A seal assembly for use with a rotating control head is provided. The seal assembly includes a rotatable member and a cavity formed between the rotatable member and a tubular radially inwardly disposed from the rotatable member. The cavity having a first surface and a second surface. The seal assembly further includes a seal member having a first end and a second end disposed between the first surface and the second surface of the cavity and sealable with the tubular between the first and the second ends due to deformation of the seal member.
    Type: Application
    Filed: August 20, 2010
    Publication date: December 9, 2010
    Inventors: Thomas F. Bailey, James W. Chambers, Mark F. Gravouia
  • Rotating control head radial seal protection and leak detection systems
    Patent number: 7836946
    Abstract: A system and method for reducing wear to radial seals in a rotating control device. The seals may be cooled by a thermal transfer fluid circulating through a passageway making more than one pass. Also, the differential pressure between multiple seals may be regulated and lowered, thereby increasing seal life.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: November 23, 2010
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Thomas F. Bailey, James W. Chambers, Don M. Hannegan, Mark F. Gravouia
  • Solid rubber packer for a rotating control device
    Patent number: 7779903
    Abstract: A seal assembly for use with a rotating control head is provided. The seal assembly includes a rotatable member and a cavity formed between the rotatable member and a tubular radially inwardly disposed from the rotatable member. The cavity having a first surface and a second surface. The seal assembly further includes a seal member having a first end and a second end disposed between the first surface and the second surface of the cavity and sealable with the tubular between the first and the second ends due to deformation of the seal member.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: August 24, 2010
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Thomas F. Bailey, James W. Chambers, Mark F. Gravouia
  • Ring gear supporting idler gear
    Patent number: 6446524
    Abstract: A power tong gear train which includes a ring gear having a series of teeth and a roller surface. The gear train further includes an idler gear assembly having a series of teeth and a roller element fixed thereto. The idler gear assembly is positioned such that the roller element engages the roller surface and maintains the tangential orientation of the two gears' respective pitch diameters.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: September 10, 2002
    Inventor: Mark F. Gravouia