Hydraulic cylinder apparatus

Details Hydraulic cylinder apparatus Hydraulic cylinder apparatus

1988-09-21

1989-12-19

Garrett, Robert E.

Expansible chamber devices

With force exerting means to move fluid from non-working...

92 82, 92 86, 92107, 92111, 188315, 18832214, 267 6415, 267 6416, F01B 3100, F15B 2100

Patent

active

048875155

ABSTRACT:
A hydraulic cylinder apparatus is used by connecting an external pressure source with extension and contraction-side liquid chambers defined by a cylinder, a piston sliding in the cylinder and a piston rod integral with the piston. The apparatus includes seal members provided with the extension and contraction-side liquid chambers and formed to enable liquid to leak through clearances between the seal members and the parts disposed opposite to the seal members. Liquid leaked from the extension and contraction-side liquid chambers is received by a receiving chamber which is formed so as to change its volume with the movement of the piston rod.

REFERENCES:
patent: 3293994 (1966-12-01), Napolitano
patent: 3972396 (1976-08-01), Bochnak
patent: 4463663 (1984-08-01), Hanson, Jr. et al.
patent: 4597322 (1986-07-01), Garnjost et al.

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