Hydraulic actuator

Details Hydraulic actuator Hydraulic actuator

1979-01-10

1980-03-11

Hershkovitz, Abraham

Motors: expansible chamber type

Cyclically operable

Distributor forms traversed movable portion of working...

91280, 91281, 91317, F01L 1700

Patent

active

041922190

ABSTRACT:
A hydraulically operated reciprocating piston and a differential force operated valve are both in continuous fluid contact with a pressurized cushion chamber as well as the piston chamber pressure. The valve position is a function of the cushion chamber pressure. The cushion chamber pressure is a function of the axial position of the piston. The values of these functions are such that the piston is reciprocated when the machine is operated. The valve is a sleeve coaxial with the piston.

REFERENCES:
patent: 3592109 (1971-07-01), Eskridge
patent: 3739863 (1973-06-01), Wohlwend
patent: 3853036 (1974-12-01), Eskridge
patent: 3896889 (1975-07-01), Bouyoucos

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