Switching device with pressure actuation of plural switches

Details Switching device with pressure actuation of plural switches Switching device with pressure actuation of plural switches

1976-06-08

1978-03-14

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Plural switch

200 83D, 200 83R, H01H 3524

Patent

active

040792153

ABSTRACT:
A switching device responsive to pressure at one or two inputs with pressure responsive members each of which moves an actuating member in response to pressure variations. First and second electrical switches are positioned to be operated by the respective actuating members and a third switch is mounted for movement with one of the members and actuated by the other member. In one embodiment, a first compression spring acts between a housing and an actuating member which is moved in response to pressure variations. A second spring extends in parallel with the first spring and acts between the housing and a pivotably mounted lever which is lifted by the first actuating member above a desired pressure level.

REFERENCES:
patent: 2226297 (1940-12-01), Spangenberg
patent: 2930866 (1960-03-01), Peterson
patent: 3182149 (1965-05-01), Noakes
patent: 3183322 (1965-05-01), Singer
patent: 3946174 (1976-03-01), Herbst

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