Patents by Inventor Larry Lucius Cox

Larry Lucius Cox 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).

  • Reinforced drill pipe seal with floating backup layer
    Patent number: 10240422
    Abstract: A reinforced seal for maintaining a pressure differential in a well bore includes an elastomeric layer and a backup layer between a drill pipe and the elastomeric layer at the wellhead. The backup layer has a first end portion, a second end portion, and a tapered portion, wherein the first end portion has a larger inner diameter than the second end portion and the tapered portion connects the first end portion and second end portion. In addition, the backup layer includes a plurality of slats substantially aligned with the longitudinal axis of the drill pipe and arranged circumferentially about the perimeter of the drill pipe along the internal surface of the backup layer such that a portion of each slat underlies a portion of each adjacent slat.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 26, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael Linley Fripp, Larry Lucius Cox, Christopher Allen Grace
  • Reinforced Drill Pipe Seal with Floating Backup Layer
    Publication number: 20160194929
    Abstract: A reinforced seal for maintaining a pressure differential in a well bore includes an elastomeric layer and a backup layer between a drill pipe and the elastomeric layer at the wellhead. The backup layer has a first end portion, a second end portion, and a tapered portion, wherein the first end portion has a larger inner diameter than the second end portion and the tapered portion connects the first end portion and second end portion. In addition, the backup layer includes a plurality of slats substantially aligned with the longitudinal axis of the drill pipe and arranged circumferentially about the perimeter of the drill pipe along the internal surface of the backup layer such that a portion of each slat underlies a portion of each adjacent slat.
    Type: Application
    Filed: September 24, 2013
    Publication date: July 7, 2016
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Michael Linley Fripp, Larry Lucius Cox, Christopher Allen Grace