Patents by Inventor Maria R. Contreras

Maria R. Contreras 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).

  • Positive lock system
    Patent number: 9725969
    Abstract: A system including a positive lock system, including a lock ring system, including a load ring configured to engage a tubular, and a lock ring configured to radially energize the load ring by moving only in an axial direction.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: August 8, 2017
    Assignee: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • Straight-bore back pressure valve
    Patent number: 9422788
    Abstract: A system includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. A method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: August 23, 2016
    Assignee: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • POSITIVE LOCK SYSTEM
    Publication number: 20160010404
    Abstract: A system including a positive lock system, including a lock ring system, including a load ring configured to engage a tubular, and a lock ring configured to radially energize the load ring by moving only in an axial direction.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 14, 2016
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • STRAIGHT-BORE BACK PRESSURE VALVE
    Publication number: 20140182863
    Abstract: A system in some embodiments includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. In some embodiments, a method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 3, 2014
    Applicant: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • Straight-bore back pressure valve
    Patent number: 8636058
    Abstract: A system includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. A method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: January 28, 2014
    Assignee: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • STRAIGHT-BORE BACK PRESSURE VALVE
    Publication number: 20110011575
    Abstract: A system in some embodiments includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. In some embodiments, a method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Application
    Filed: March 19, 2009
    Publication date: January 20, 2011
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Dennis P. Nguyen, Maria R. Contreras