Fluid operated electrical relays and systems

Details Fluid operated electrical relays and systems Fluid operated electrical relays and systems

1975-06-02

1976-12-28

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83N, 137119, H01H 3534

Patent

active

040003868

ABSTRACT:
Low-cost fluid-operated electric relay type logic elements are provided with an elastomeric conductive diaphragm flexed out of a stable taut intermediate position by means of differential pressures of fluid signals directed into respective chambers on opposite sides to provide thereby break or make connections with cooperating conductive contacts. Thus fluid logic, switching circuit logic or hybrid logic operations may be effected directly with attendant advantages of reliability and more powerful logic capabilities. Alternatively the elements may serve as interfacing members to produce electrical signals from fluid systems. The elements have further advantages as servicing monitor means where access is provided to conductive circuits displaying more servicing information relating to operational characteristics of the fluid logic devices than possible with fluid indicators.

REFERENCES:
patent: 3267233 (1966-08-01), Basile
patent: 3689719 (1972-09-01), Phillips
patent: 3702909 (1972-11-01), Kraakman
patent: 3710060 (1973-01-01), Brevick
patent: 3779267 (1973-12-01), Cowan
patent: 3789864 (1974-02-01), Cowan
IBM Tech. Discl. Bull., Pneumatic Latch Circuit, Norwood, vol. 8, No. 8, Jan., 1966.
IBM Tech. Discl. Bull., Pneumatic to Electric Transducer, Meier, vol. 6, No. 5, Oct., 1963.

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