Patents by Inventor Mitchell A. Boyd

Mitchell A. Boyd 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: 9677389
    Abstract: A dart valve assembly includes a dart valve and a clutch that restrains the movement of the dart valve within the bore of a dart valve cage or plunger body between a closed and an open position. The clutch includes a clutch bobbin formed of a synthetic material, and both the inside diameter of the clutch bobbin and the outside diameter of the dart valve stem of the dart valve assembly are configured with a sequence of alternating ridges and grooves to improve clutch action through reduced friction.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: June 13, 2017
    Assignee: Flowco Production Solutions, LLC
    Inventors: Garrett S. Boyd, Mitchell A. Boyd, John M. Lee, Garrett W. Winford
  • Patent number: 9624996
    Abstract: A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 18, 2017
    Assignee: Flowco Production Solutions, LLC
    Inventors: Mitchell A. Boyd, Garrett S. Boyd
  • Publication number: 20170058652
    Abstract: A dart valve assembly for a bypass plunger is disclosed including a dart valve and a clutch. The clutch bobbin, installed within the bore of a valve cage or a plunger body, is formed of a synthetic material. The clutch restrains the movement of the dart valve within it as the dart valve moves between a closed and an open position. The synthetic bobbin reduces friction and substantially increases the service life of the dart valve assembly. The clutch bobbin surrounds and exerts a predetermined clamping tension on the stem of the dart valve. Both the outside diameter of the dart valve stem and the inside diameter of the clutch bobbin are configured with a sequence of alternating ridges and grooves to improve clutch action.
    Type: Application
    Filed: August 24, 2016
    Publication date: March 2, 2017
    Inventors: Garrett S. Boyd, Mitchell A. Boyd, John M. Lee, Garrett W. Winford
  • Publication number: 20160245415
    Abstract: A bypass plunger combines a unitary or one-piece hollow body-and-valve cage, retains a data valve within the valve cage portion of the hollow body using a threaded retaining nut secured by crimple detents. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during ascent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and valve stems surfaced to achieve specific functions. Combinations of these features provide enhanced performance, durability and reliability at reduced manufacturing cost, due primarily to the simplicity of its design.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventors: Garrett S. Boyd, Mitchell A. Boyd
  • Publication number: 20160245416
    Abstract: A bypass plunger combines a unitary or one-piece hollow body-and-valve cage, retains a dart valve within the valve cage portion of the hollow body using a threaded retaining nut secured by crimple detents. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during ascent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and valve stems surfaced to achieve specific functions. Combinations of these features provide enhanced performance, durability and reliability at reduced manufacturing cost, due primarily to the simplicity of its design.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventors: Garrett S. Boyd, Mitchell A. Boyd
  • Publication number: 20160222758
    Abstract: An automatic release valve assembly for a bumper spring, comprising a hollow cylindrical valve seat sleeve having a plurality of flow ports and flow passages disposed in the sidewalls thereof; a valve ball sized to engage by contact with a robust valve seat; a multiple coil spring disposed over the sleeve portion of the valve seat sleeve; wherein the valve seat sleeve, ball, and coil spring are enclosed within a hollow cylindrical housing. The housing includes within its bore a central region of a plurality of parallel, elongated and interleaved grooves and ridges to permit released fluid to flow and to stabilize the operation of the valve assembly.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 4, 2016
    Inventors: Garrett S. Boyd, Mitchell A. Boyd
  • Publication number: 20160208830
    Abstract: A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 21, 2016
    Inventors: Mitchell A. Boyd, Garrett S. Boyd