Accession Number : ADD005950

Title :   Pilot Operated Stepping Valve.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Rumrill,Edwin W , Jr ; Lewis,Frank D , Sr

Report Date : 27 Mar 1979

Pagination or Media Count : 4

Abstract : A pilot operated stepping valve where an electrical pulse motor drives a pilot valve spool which controls the flow of hydraulic fluid driving a main valve spool which actuates a hydraulic motor or actuator. The main valve spool follows the pilot spool and is hence sensitive to the pulses received by the pulse motor. (Author)

Descriptors :   *Patents, *Hydraulic actuators, *Hydraulic valves, *Stepper motors, Digital computers, Electrohydraulic valves, Pulse generators, Airborne, Spaceborne, Pilots, Control systems, Electric motors

Subject Categories : Hydraulic and Pneumatic Equipment
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE