Magnetically actuated proximity flow switch

Details Magnetically actuated proximity flow switch Magnetically actuated proximity flow switch

1990-10-31

1992-02-25

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

7386175, 340610, H01H 3540

Patent

active

050916122

ABSTRACT:
A flow switch adapted to be attached to a pipe is designed to trip a switch at a preset flow rate. The switch employs a bending metal blade which deflects in the flow stream to move a magnet attached to the downstream side of the blade relative to a reed switch or Hall-effect switch. The switching device is preferably mounted in a slot on a printed circuit board to enable selection of a range of available trip points.

REFERENCES:
patent: 3564171 (1971-02-01), Hammond
patent: 4071725 (1978-01-01), Smith
patent: 4377090 (1983-03-01), Seulen
patent: 4443671 (1984-04-01), Hinds
patent: 4827092 (1989-05-01), Kobold
Fluid Flow Switch, Mod. Q-9, Harwil Corporation, Apr. 1986.
Water Flow Switch, Mod. Q-10, Harwil Corporation, Nov. 1989.

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