Patents by Inventor Colin Arthur Longfield

Colin Arthur Longfield 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).

  • Indexer controlled directional valve system
    Patent number: 10514104
    Abstract: A technique enables mechanical control of a directional valve. The technique may utilize a system comprising a directional valve which is mechanically actuatable between a plurality of flow positions. The directional valve is mechanically coupled with an indexer mechanism. The indexer mechanism may be shifted to a plurality of desired indexer positions defined by a cam track. As the indexer mechanism is shifted between indexer positions, the mechanical link between the indexer mechanism and the directional valve mechanically shifts the directional valve to selected flow positions of the plurality of flow positions.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: December 24, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Edgar Jose Montiel, Abbigail Ullrich, Mark Smith, Michael Fuad, Colin Arthur Longfield
  • Actuation control system using pilot control circuit
    Patent number: 10392900
    Abstract: A technique facilitates mechanical operation of components, e.g. valves, without utilizing electronics at the components or control lines routed to the components. An actuation control system is fully mechanical in the sense that it is constructed to mechanically shift to different control positions via pressure input, such as pressure input supplied along a wellbore annulus. The actuation control system utilizes a spool valve coupled with a pilot control circuit which establishes a reference pressure that can be used in shifting the spool valve to different operational positions.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: August 27, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Gary Rytlewski, Colin Arthur Longfield, James G. Filas, Edgar Montiel
  • MEDICAL DEVICE SYSTEM AND A METHOD FOR LOCATING MEDICAL DEVICES AND MOBILE CONTROL UNITS OF SAID MEDICAL DEVICE SYSTEM
    Publication number: 20170122069
    Abstract: A technique facilitates mechanical operation of components, e.g. valves, without utilizing electronics at the components or control lines routed to the components. An actuation control system is fully mechanical in the sense that it is constructed to mechanically shift to different control positions via pressure input, such as pressure input supplied along a wellbore annulus. The actuation control system utilizes a spool valve coupled with a pilot control circuit which establishes a reference pressure that can be used in shifting the spool valve to different operational positions.
    Type: Application
    Filed: June 29, 2015
    Publication date: May 4, 2017
    Inventors: Gary Rytlewski, Colin Arthur Longfield, James G. Filas, Edgar Montiel
  • INDEXER CONTROLLED DIRECTIONAL VALVE SYSTEM
    Publication number: 20170059045
    Abstract: A technique enables mechanical control of a directional valve. The technique may utilize a system comprising a directional valve which is mechanically actuatable between a plurality of flow positions. The directional valve is mechanically coupled with an indexer mechanism. The indexer mechanism may be shifted to a plurality of desired indexer positions defined by a cam track. As the indexer mechanism is shifted between indexer positions, the mechanical link between the indexer mechanism and the directional valve mechanically shifts the directional valve to selected flow positions of the plurality of flow positions.
    Type: Application
    Filed: August 31, 2016
    Publication date: March 2, 2017
    Inventors: Edgar Jose Montiel, Abbigail Ullrich, Mark Smith, Michael Fuad, Colin Arthur Longfield