Poppet valve flow switch

Details Poppet valve flow switch Poppet valve flow switch

1989-10-11

1990-06-12

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

200 82R, 251 29, 340606, H01H 3538

Patent

active

049335162

ABSTRACT:
Electrical contacts (10) and (12) are bridged by surface (22) when a fluid flow rate from fluid inlet (30) to exit (34) is sufficient to displace poppet (26) against the bias of bellows (28). Bellows (28) may be sealed at opposite ends to provide an environment for contacts (10) and (12) that is isolated from the fluid.

REFERENCES:
patent: 2772409 (1956-11-01), Reid
patent: 2826754 (1958-03-01), Carighan
patent: 3444545 (1966-10-01), Batur
patent: 3746810 (1973-07-01), Parsons
patent: 3890995 (1975-06-01), Miller et al.
patent: 3954249 (1976-05-01), Gratzmuller

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