Patents by Inventor Stuart Dennistoun

Stuart Dennistoun 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).

  • Publication number: 20070227738
    Abstract: A communication tool (100) includes a housing (102) having recesses (110) and a set of axial locating elements (112) radially extendable through the recesses (110) and engagably positionable within a profile of a tubing retrievable safety valve (50). An anti rotation device (140) is radially outwardly extendable relative to the housing (112). The anti rotation device (140) operably engages the tubing retrievable safety valve (50) to substantially prevent relative rotation between at least a portion of the communication tool (100) and the tubing retrievable safety valve (50). A cutting tool (148) is radially outwardly extendable relative to the housing (102). The cutting tool (148) is operable to create a fluid passageway (150) between a non annular hydraulic chamber (60) and an interior the tubing retrievable safety valve (50).
    Type: Application
    Filed: May 31, 2007
    Publication date: October 4, 2007
    Inventors: Stuart Dennistoun, Roddie Smith, Imre Gazda
  • Publication number: 20060113081
    Abstract: A communication tool (100) includes a housing (102) having recesses (110) and a set of axial locating elements (112) radially extendable through the recesses (110) and engagably positionable within a profile of a tubing retrievable safety valve (50). An anti rotation device (140) is radially outwardly extendable relative to the housing (112). The anti rotation device (140) operably engages the tubing retrievable safety valve (50) to substantially prevent relative rotation between at least a portion of the communication tool (100) and the tubing retrievable safety valve (50). A cutting tool (148) is radially outwardly extendable relative to the housing (102). The cutting tool (148) is operable to create a fluid passageway (150) between a non annular hydraulic chamber (60) and an interior the tubing retrievable safety valve (50).
    Type: Application
    Filed: January 4, 2006
    Publication date: June 1, 2006
    Inventors: Stuart Dennistoun, Roddie Smith, Imre Gazda
  • Publication number: 20050056430
    Abstract: A tubing retrievable safety valve (50) having a non annular hydraulic chamber (60) in a sidewall portion thereof is operable to received a communication tool (100) therein such that relative rotation between at least a portion of the communication tool (100) and the tubing retrievable safety valve (50) is substantially prevented. The communication tool (100) is operable to create a fluid passageway (150) between the non annular hydraulic chamber (60) and the interior of the tubing retrievable safety valve (50) by penetrating through the sidewall portion and into the non annular hydraulic chamber (60). Thereafter, when a wireline retrievable safety valve (44) is positioned within the tubing retrievable safety valve (50), hydraulic fluid is communicatable thereto through the fluid passageway (150).
    Type: Application
    Filed: October 26, 2004
    Publication date: March 17, 2005
    Inventors: Stuart Dennistoun, Roddie Smith, Imre Gazda
  • Publication number: 20050056414
    Abstract: A tubing retrievable safety valve (50) having a non annular hydraulic chamber (60) in a sidewall portion thereof is operable to received a communication tool (100) therein such that relative rotation between at least a portion of the communication tool (100) and the tubing retrievable safety valve (50) is substantially prevented. The communication tool (100) is operable to create a fluid passageway (150) between the non annular hydraulic chamber (60) and the interior of the tubing retrievable safety valve (50) by penetrating through the sidewall portion and into the non annular hydraulic chamber (60). Thereafter, when a wireline retrievable safety valve (44) is positioned within the tubing retrievable safety valve (50), hydraulic fluid is communicatable thereto through the fluid passageway (150).
    Type: Application
    Filed: October 26, 2004
    Publication date: March 17, 2005
    Inventors: Stuart Dennistoun, Roddie Smith, Imre Gazda