Accession Number : ADD001385

Title :   Hydraulic Positional Control System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Fischer,Stephen J

Report Date : 01 Oct 1974

Pagination or Media Count : 4

Abstract : The patent relates to a hydraulic control system having a master and load cylinder, the latter positioning a control shaft in response to movements of the former. The control system has a separate auxiliary circuit which automatically returns the load piston to its neutral position each time the master piston passes through a predetermined position and an unsynchronized condition between the master and load pistons is sensed. A mechanical linkage, which interconnects hydraulic elements of the two hydraulic circuits, senses the unsynchronized condition; and the auxiliary circuit upon indication of an unsynchronized condition returns the load piston to its neutral position.

Descriptors :   *Submarines, *Hydrodynamic control surfaces, *Hydraulic servomechanisms, *Patents, Backup systems, Hydraulic actuators, Linkages

Subject Categories : Hydraulic and Pneumatic Equipment
      Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE