Patents by Inventor Gregory A. Armstrong

Gregory A. Armstrong 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).

  • Pressurized seat check valve
    Patent number: 10472926
    Abstract: A pressurized seat check valve including a flexible frustoconical seat having a back surface configured for exposure to upstream pressure, a closure member in sealable communication with the seat, the closure member being biased into contact with the seat and, in use, the seat being deflected toward the closure member by the exposure to upstream pressure.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: November 12, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Do Seo Park, Marc Samuelson, Zhi Yong He, Gregory Armstrong, Donavan Holland Brown
  • PRESSURIZED SEAT CHECK VALVE
    Publication number: 20180363416
    Abstract: A pressurized seat check valve including a flexible frustoconical seat having a back surface configured for exposure to upstream pressure, a closure member in sealable communication with the seat, the closure member being biased into contact with the seat and, in use, the seat being deflected toward the closure member by the exposure to upstream pressure.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 20, 2018
    Applicant: Baker Hughes Incorporated
    Inventors: Do Seo Park, Marc Samuelson, Zhi Yong He, Gregory Armstrong, Donavan Holland Brown
  • Control system for engine with exhaust gas recirculation
    Publication number: 20130008417
    Abstract: An internal combustion engine includes an exhaust restriction valve and an exhaust gas recirculation control valve. Upon determining that a malfunction or fault condition exists relative to one of the valves, the controller may command the other valve to move towards a predetermined position. A malfunction or fault condition may result in derating of the engine.
    Type: Application
    Filed: July 6, 2011
    Publication date: January 10, 2013
    Applicant: CATERPILLAR INC.
    Inventors: Rammohan Sankar, Ben Nash, Keith Troisi, Travis Barnes, Christopher Smith, Gregory Armstrong, Adwait Joshi, Aaron Luft
  • Pull style machining vise having a pivotal jaw assembly
    Patent number: D435772
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: January 2, 2001
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong
  • Machining vise having a pivotal jaw assembly
    Patent number: D436012
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: January 9, 2001
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong
  • Pivotal jaw assembly
    Patent number: D437200
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: February 6, 2001
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong
  • Machining vise having a pivotal jaw assembly
    Patent number: D420880
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: February 22, 2000
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong
  • Pivotal jaw assembly
    Patent number: D421208
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: February 29, 2000
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong
  • Pull style machining vise having a pivotal jaw assembly
    Patent number: D422868
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: April 18, 2000
    Assignee: Lavigne Manufacturing, Inc.
    Inventors: Gerard E. Lavigne, Michael R. Corriveau, Gregory A. Armstrong