Fluid pressure actuator

Details Fluid pressure actuator Fluid pressure actuator

1979-10-10

1981-08-11

Cohen, Irwin C.

Expansible chamber devices

Bellows type expansible chamber

Plural bellows

70264, 92 48, 92 63, 92 64, 92129, E05B 6538, F01B 1900

Patent

active

042828007

ABSTRACT:
This invention relates to fluid pressure servo motors having two operatively independent fluid chambers, each chamber having a piston means therein movable in response to a fluid pressure differential so as to alter in use a two position device from one to the other of said two positions, each piston means having a lost motion means connection to allow the idle return of the piston in the event of cessation of the fluid pressure differential, wherein the two pistons are co-axial and move in opposite directions in response to the pressure differential and one piston is fixed to a stirrup formed as a wire loop which bridges the other piston to act in use against said device.

REFERENCES:
patent: 1454886 (1923-05-01), Giesler
patent: 2649843 (1953-08-01), Province
patent: 2704540 (1955-03-01), Engelder
patent: 2969776 (1961-01-01), Riester
patent: 2976085 (1961-03-01), Grogan
patent: 3218593 (1965-11-01), Jonke
patent: 3498189 (1970-03-01), Andres
patent: 4189454 (1980-02-01), Detweiler

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