Patents by Inventor John Limmer

John Limmer 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).

  • Systems and methods for protecting a turbomachine
    Patent number: 11125105
    Abstract: Systems and methods for protecting a turbomachine may include a trip throttle valve having a throttle valve assembly and a trip valve assembly. The trip valve assembly may include a plurality of trip valves fluidly coupled to a hydraulic cylinder of the throttle valve assembly via a first flow path and a second flow path in parallel with one another. The trip valve assembly may also include a plurality of isolation valves fluidly coupled to the hydraulic cylinder via the first flow path and the second flow path. The plurality of isolation valves may be configured to selectively prevent fluid communication between the plurality of trip valves and the hydraulic cylinder to allow testing of one or more of the plurality of trip valves during operation of the turbomachine.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: September 21, 2021
    Assignees: DRESSER-RAND COMPANY, REXA, INC.
    Inventors: Shannon Nimchan, John Limmer, Pedro Lopez, Ken Enos
  • SYSTEMS AND METHODS FOR PROTECTING A TURBOMACHINE
    Publication number: 20200256207
    Abstract: Systems and methods for protecting a turbomachine may include a trip throttle valve having a throttle valve assembly and a trip valve assembly. The trip valve assembly may include a plurality of trip valves fluidly coupled to a hydraulic cylinder of the throttle valve assembly via a first flow path and a second flow path in parallel with one another. The trip valve assembly may also include a plurality of isolation valves fluidly coupled to the hydraulic cylinder via the first flow path and the second flow path. The plurality of isolation valves may be configured to selectively prevent fluid communication between the plurality of trip valves and the hydraulic cylinder to allow testing of one or more of the plurality of trip valves during operation of the turbomachine.
    Type: Application
    Filed: April 3, 2020
    Publication date: August 13, 2020
    Inventors: Shannon Nimchan, John Limmer, Pedro Lopez, Ken Enos
  • Systems and methods for protecting a turbomachine
    Patent number: 10648358
    Abstract: Systems and methods for protecting a turbomachine may include a trip throttle valve having a throttle valve assembly and a trip valve assembly. The trip valve assembly may include a plurality of trip valves fluidly coupled to a hydraulic cylinder of the throttle valve assembly via a first flow path and a second flow path in parallel with one another. The trip valve assembly may also include a plurality of isolation valves fluidly coupled to the hydraulic cylinder via the first flow path and the second flow path. The plurality of isolation valves may be configured to selectively prevent fluid communication between the plurality of trip valves and the hydraulic cylinder to allow testing of one or more of the plurality of trip valves during operation of the turbomachine.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 12, 2020
    Assignees: DRESSER-RAND COMPANY, REXA, INC.
    Inventors: Shannon Nimchan, John Limmer, Pedro Lopez, Ken Enos
  • SYSTEMS AND METHODS FOR PROTECTING A TURBOMACHINE
    Publication number: 20180171818
    Abstract: Systems and methods for protecting a turbomachine may include a trip throttle valve having a throttle valve assembly and a trip valve assembly. The trip valve assembly may include a plurality of trip valves fluidly coupled to a hydraulic cylinder of the throttle valve assembly via a first flow path and a second flow path in parallel with one another. The trip valve assembly may also include a plurality of isolation valves fluidly coupled to the hydraulic cylinder via the first flow path and the second flow path. The plurality of isolation valves may be configured to selectively prevent fluid communication between the plurality of trip valves and the hydraulic cylinder to allow testing of one or more of the plurality of trip valves during operation of the turbomachine.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 21, 2018
    Inventors: Shannon Nimchan, John Limmer, Pedro Lopez, Ken Enos