Flow responsive switch apparatus

Details Flow responsive switch apparatus Flow responsive switch apparatus

1990-04-02

1991-06-04

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

7386174, 340610, H01H 3540

Patent

active

050216198

ABSTRACT:
A liquid flow switch apparatus is provided for connection to ducting wherein liquid flows forwardly. The apparatus comprises: a support body connectible to the ducting; a stem carried by the body to project into a liquid flow zone in the ducting, and a magnetically responsive switch in the stem; a cantilevered arm carried by the body to project into the flow zone upstream of the stem and to be deflected downstream into supported relation with the stem in response to flow impingement on the arm; and a magnet carried by the arm to be displaced by the stem deflection into sufficiently close proximity with the stem and the switch as to effect switch operation.

REFERENCES:
patent: 2421768 (1947-06-01), Voliazzo
patent: 4034174 (1977-07-01), McCord
patent: 4074097 (1978-02-01), Hutchinson
patent: 4152688 (1979-05-01), Dietz
patent: 4282413 (1981-08-01), Simons
patent: 4788534 (1988-11-01), Engelhardt
patent: 4827092 (1989-05-01), Kobold

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