公开(公告)号：US3908373A

公开(公告)日：1975-09-30

申请号：US24921472

申请日：1972-05-01

Applicant: FOSTER MILLER ASS

Inventor： PETERSON CARL R

IPC: F01B11/00 ,  F01L21/04 ,  F01L25/06 ,  F01L27/04 ,  F01B7/18 ,  F01L25/04

CPC classification number: F01L21/04 ,  F01B11/00 ,  F01L25/06 ,  F01L27/04

Abstract: A high energy linear actuator includes an enclosed cylinder with a sleeve slideable within the cylinder to define a compression chamber and a liquid chamber on opposite sides of the sleeve. A piston ram extends slideably through the liquid end of the cylinder and the other internal end of the ram is slideable within the central bore in the sleeve to expose the inner end of the ram to the compression chamber. The actuator includes a special sealing arrangement and porting arrangements, which may be controlled by a variety of valve systems. The actuator is operated by pumping a pressurized liquid into the liquid chamber to urge the sleeve and piston in unison toward the opposite end of the cylinder and compressing the gas in the compression chamber. The seal between the sleeve and piston then is broken to relieve the advancing force of the pressurized liquid on the piston. The force of the compressed gas then acts immediately on the exposed inner end of the piston to drive the piston at high velocity and with substantial force.