Pressure responsive switch with discrete pressure responsive uni

Details Pressure responsive switch with discrete pressure responsive uni Pressure responsive switch with discrete pressure responsive uni

1982-12-10

1984-09-04

Scott, J. R.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83B, 200 83Y, H01H 3534

Patent

active

044699239

ABSTRACT:
A relatively low cost, high performance pressure responsive switch device comprises a base, switch means mounted on the base, and a discrete pressure-responsive unit which is separately testable for predetermining its pressure response characteristics and which is then mounted on the base for moving the switch means between selected switch positions in response to the application of a selected fluid pressure. The discrete pressure-responsive unit is particularly adapted for achieving long unit cycle life under high operating pressure conditions and for actuating the switch means incorporated in the device to achieve long cycle life as well.

REFERENCES:
patent: 3564977 (1971-02-01), Davis
patent: 3720090 (1973-03-01), Halpert et al.
patent: 4091249 (1978-05-01), Huffman
patent: 4220836 (1980-09-01), Hersey
patent: 4287780 (1981-09-01), Poling
patent: 4330695 (1982-05-01), Poling
patent: 4342887 (1982-08-01), Sanford

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