Vacuum actuated switch

Details Vacuum actuated switch Vacuum actuated switch

1978-11-22

1980-02-26

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

With plural operators

200 83P, 200 83Y, 200 83Q, H01H 3534

Patent

active

041907523

ABSTRACT:
A vacuum actuated switch has a pair of snap action contacts which are actuated in response to the operation of two vacuum motors. One vacuum motor controls the opening and closing of the contacts in a first predetermined range of vacuum. The other vacuum motor extends the range of operation to a second and larger predetermined range of vacuum wherein one limit of the second range is the same as the first range.

REFERENCES:
patent: 3252352 (1966-05-01), General et al.
patent: 3596023 (1971-07-01), Kothe
patent: 3693478 (1972-09-01), Malloy
patent: 4140436 (1979-02-01), Schumacher et al.

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