Patents by Inventor Griffin McNeil DOAK

Griffin McNeil DOAK 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).

  • Rotary fluid valve assemblies, systems and methods
    Patent number: 8689831
    Abstract: Rotary valves are provided having an elongate spool defining coaxially aligned inlet and outlet ports for respectively receiving and discharging a fluid, and spool inlet and outlet orifices. A rotary cage assembly defines an annular cage recess and cage inlet and outlet orifices in communication with the recess and coaxially surrounds the spool for reciprocal rotations thereabout. An actuator assembly is coupled to the rotary cage assembly for moving the rotary cage assembly between open and closed positions. When in the open position the cage inlet and outlet orifices are in fluid communication with the spool inlet and outlet orifices, respectively, to allow fluid to flow from the spool inlet port to the spool outlet port by way of the annular cage recess. When in the closed position however fluid communication is blocked between at least the cage and spool outlet orifices.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: April 8, 2014
    Assignee: Whiting Technologies Corporation
    Inventors: Frederick Joseph Whiting, Griffin McNeil Doak
  • ROTARY FLUID VALVE ASSEMBLIES, SYSTEMS AND METHODS
    Publication number: 20120085414
    Abstract: Rotary valves are provided having an elongate spool defining coaxially aligned inlet and outlet ports for respectively receiving and discharging a fluid, and spool inlet and outlet orifices. A rotary cage assembly defines an annular cage recess and cage inlet and outlet orifices in communication with the recess and coaxially surrounds the spool for reciprocal rotations thereabout. An actuator assembly is coupled to the rotary cage assembly for moving the rotary cage assembly between open and closed positions. When in the open position the cage inlet and outlet orifices are in fluid communication with the spool inlet and outlet orifices, respectively, to allow fluid to flow from the spool inlet port to the spool outlet port by way of the annular cage recess. When in the closed position however fluid communication is blocked between at least the cage and spool outlet orifices.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Applicant: WHITING TECHNOLOGIES CORPORATION
    Inventors: Frederick Joseph WHITING, Griffin McNeil DOAK