Flow switch

Details Flow switch Flow switch

1987-12-09

1988-12-13

Tolin, G. P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

7386174, 340610, 200 81R, H01H 3540

Patent

active

047912545

ABSTRACT:
A switch is responsive to fluid flow within a conduit. It is highly sensitive to variations in flow and forms an effective seal between the fluid and atmosphere. It includes a plastic pivot ball in a spherical seat. A blade extends from the pivot ball into the conduit where it can be displaced by fluid flow to rotate the ball. A lever is eccentrically connected to the pivot ball and extends upwardly within a closed, non-magnetic, housing. The upper end of the lever carries a magnet which actuates a switch outside the housing. An adjustable spring between the top of the lever and the housing permits adjustment of the sensitivity of the response.

REFERENCES:
patent: 4168413 (1979-09-01), Halpine
patent: 4614122 (1986-09-01), Graves

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