Hydraulic actuator cushioning device

Details Hydraulic actuator cushioning device Hydraulic actuator cushioning device

1977-06-16

1980-04-15

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Self-acting valve

91443, 91446, 1375962, F15B 1108, F15B 13042

Patent

active

041977858

ABSTRACT:
A device for cushioning hydraulic actuators at the end of travel including a unique valve responsive to hydraulic pressure which, one when under system return pressure ports fluid to a chamber of less volume than the actuator cylinder and then through a line restriction for reduced fluid flow and the consequential slowing of the actuator and two when system pressure is off, drains the chamber for use during the next cycle.

REFERENCES:
patent: 1599199 (1926-09-01), Bayles
patent: 3043277 (1962-07-01), Carlson
patent: 3045697 (1962-07-01), Seguenot
patent: 3779136 (1973-12-01), Hohlein
patent: 3963045 (1976-06-01), Damitz

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