Patents Assigned to Worcestor Controls Licenseco, Inc.
  • Patent number: 5865419
    Abstract: This invention features a device for controlling the operation of a pneumatic actuator and a pneumatic actuator having such a control device. More particularly, the actuator control device of the instant invention includes a housing mounted to an actuator end cap, a solenoid valve disposed within the housing and a gas control valve that controls the pressurized gas admitted to and exhausted from the actuator for valve actuation. The gas control valve is responsive to the solenoid valve and is mounted to the housing. Preferably, the control device includes a position indication mechanism, disposed within the housing, that determines a prespecified position of the valve responsive to the movement of at least one and preferably two moveable actuator probes extending from the actuator end cap into the housing. The gas control valve is a spool valve that is pneumatically controlled by the solenoid valve.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: February 2, 1999
    Assignee: Worcestor Controls Licenseco, Inc.
    Inventors: David C. Nelson, Richard R. Marchesseault