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
Distribution Statement : APPROVED FOR PUBLIC RELEASE