Patents Assigned to Value Oriented Technology Inc.
  • Function assist control for pressure relief valve
    Patent number: 4572237
    Abstract: A dual bellows apparatus for controlled, programmed application of forces to an extension of the spindle of a spring loaded safety relief valve. A controller which may be remote from the valve is adapted to perform a plurality of functions on the valve while installed in an operating system by pressurization of the respective bellows. These functions include force-assisted opening of the valve, force-assisted blowdown, anti-simmer control and measurement of the set pressure.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: February 25, 1986
    Assignee: Value Oriented Technology Inc.
    Inventor: Leonard J. Thompson