Patents Assigned to ACR Process Corp.
  • Automatic control system having manual control engagable at will
    Patent number: 4527445
    Abstract: A device for varying fluid pressure in increments in order to vary the position of a mechanism in a remote location such as a valve wherein the output pressure of the fluid may be controlled through an automatic system which may be manually overridden without disengaging the automatic control system.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: July 9, 1985
    Assignee: ACR Process Corp.
    Inventor: Eric K. Walton