Accession Number : AD0163547
Title : Multiple Area Hydraulic Actuator.
Descriptive Note : Patent,
Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C
Personal Author(s) : Hillberry,Benny M.
Report Date : 15 JUN 1971
Pagination or Media Count : 6
Abstract : Two or more fluid motors of the expandable chamber type are connected to a source of pressurized fluid, and are cross-connected to one another through valving, such that the power delivering element operates rapidly with a low force in one direction, (positive force), until a high resistance is encountered. Then a valve shifts automatically to increase the positive force output while the power delivering element operates at a lower speed. Further, upon reversal of the motors, high-pressure and low-speed retraction occurs if a substantial positive load remains against the power delivering element. This results in nice slow precise control of the apparatus. (Modified author abatract)
Descriptors : (*HYDRAULIC ACTUATORS, *PATENTS), HYDRAULIC VALVES, SERVOMECHANISMS, SPRINGS, LOADS(FORCES)
Subject Categories : Hydraulic and Pneumatic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE