Patents by Inventor Robert Samuel Buchan

Robert Samuel Buchan 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).

  • Ball valve enclosure and drive mechanism
    Patent number: 8925894
    Abstract: A ball valve assembly includes an enclosure for supporting the ball valve during actuation. In one embodiment, the enclosure can be a split enclosure, and can have trunnion support apertures for engaging trunnions on the ball valve. In one embodiment, a pair of link arms are used to transfer force from a pair of actuation members to the ball valve. The link arms can be located in a recess on the actuation members, such the actuation members and the face of the trunnions define a cavity to enclose and protect the link arms.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: January 6, 2015
    Assignee: Vetco Gray Inc.
    Inventors: Sivakumar Natarajan, Robert Samuel Buchan, Thirupathi Dommati
  • BALL VALVE ENCLOSURE AND DRIVE MECHANISM
    Publication number: 20130214189
    Abstract: A ball valve assembly includes an enclosure for supporting the ball valve during actuation. In one embodiment, the enclosure can be a split enclosure, and can have trunnion support apertures for engaging trunnions on the ball valve. In one embodiment, a pair of link arms are used to transfer force from a pair of actuation members to the ball valve. The link arms can be located in a recess on the actuation members, such the actuation members and the face of the trunnions define a cavity to enclose and protect the link arms.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 22, 2013
    Applicant: Vetco Gray Inc.
    Inventors: Sivakumar Natarajan, Robert Samuel Buchan, Thirupathi Dommati
  • Electrical penetrator connector
    Patent number: 6932636
    Abstract: An electrical penetrator connector has a fixed coupler pin unit which incorporates a pin having a conductive element. A reciprocatable component includes a housing defining a bore into which the pin may be inserted. Within the bore is a retractable shuttle pin. A chamber contains dielectric fluid. A flow path for the dielectric fluid is configured to move the fluid past a contact in the bore which is to touch the contact on the pin. The dielectric fluid circulates round the flow path every time the pin is inserted into the bore.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: August 23, 2005
    Assignee: Vetco Gray Inc.
    Inventors: Stephen Trevor Abbey, Rolf August Heinrich Ruesse, Robert Samuel Buchan
  • Electrical penetrator connector
    Publication number: 20040266240
    Abstract: An electrical penetrator connector has a fixed coupler pin unit which incorporates a pin having a conductive element. A reciprocatable component includes a housing defining a bore into which the pin may be inserted. Within the bore is a retractable shuttle pin. A chamber contains dielectric fluid. A flow path for the dielectric fluid is configured to move the fluid past a contact in the bore which is to touch the contact on the pin. The dielectric fluid circulates round the flow path every time the pin is inserted into the bore.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 30, 2004
    Inventors: Stephen Trevor Abbey, Rolf August Heinrich Ruesse, Robert Samuel Buchan