Patents by Inventor Patricia Thrash

Patricia Thrash 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).

  • Patent number: 8397742
    Abstract: A shuttle valve useful in connection with operation of underwater blowout preventers employs soft seals sealing an annulus between an inlet bore and the outer periphery of the shuttle to provide hydraulic function control from a high pressure low flow supply source such as a low volume positive displacement pump on a remotely operated vehicle without losing opposing inlet sealing and hydraulic fluid dump the opposing inlet during a return stroke of the pump.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 19, 2013
    Assignee: DTL Technologies, L.P.
    Inventors: Brian Frank Matteucci, Patricia Thrash
  • Publication number: 20100155073
    Abstract: Systems and methods for improved hydraulic control systems for actuation of subsea equipment in deep water are disclosed. The hydraulic control system relies on smaller fluid flow associated with a hydraulic pressure pulse to actuate the small volume actuation control valve. In one embodiment, the system includes small diameter control umbilical hoses and pilot-operated valves with low actuation volumes. Particularly, a hydraulic control system for reducing the signal time to a subsea blowout preventer in water depth up to and greater than about 5000 feet. Some embodiments comprise a valve arrangement which hydraulically actuate one side of a hydraulic control function, while simultaneously evacuating the opposing circuit both at the seabed and at the surface. Some embodiments comprise an umbilical hose located proximate the center of an umbilical bundle. Preferably, the umbilical hose has a plurality of layers of reinforcing fibers which increase with the diameter of the reinforcement layer.
    Type: Application
    Filed: September 4, 2009
    Publication date: June 24, 2010
    Applicant: DIAMOND OFFSHORE DRILLING, INC.
    Inventors: Robert Norman Blank, John Stephen Hiltpold, Tri Canh Le, Brian Frank Matteucci, Patrick D.M. Rogan, Abner Bernard Simmons, Thomas Benjamin Thrash, JR., Patricia Thrash
  • Publication number: 20100154896
    Abstract: A shuttle valve useful in connection with operation of underwater blowout preventers employs soft seals sealing an annulus between an inlet bore and the outer periphery of the shuttle to provide hydraulic function control from a high pressure low flow supply source such as a low volume positive displacement pump on a remotely operated vehicle without losing opposing inlet sealing and hydraulic fluid dump the opposing inlet during a return stroke of the pump.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Inventors: Thomas Benjamin Thrash, JR., Patricia Thrash, Brian Frank Matteucci