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:

1971-06-15

Pagination or Media Count:

6.0

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