Patents Examined by John S. Starsick, Jr.
  • Pressure control valve
    Patent number: 4540018
    Abstract: The pressure response of a pressure control valve is adjusted by a solenoid valve of which the solenoid is connected to an electrical three point control device. A programmed signal and an actual signal derived from a transformer of the control pressure valve are fed to the input of the three point control device.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: September 10, 1985
    Assignee: Mannesmann Rexroth GmbH
    Inventor: Jorg Dantlgraber