Fluid pressure switch having venting means for dispersing back p

Details Fluid pressure switch having venting means for dispersing back p Fluid pressure switch having venting means for dispersing back p

1988-04-01

1990-05-01

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 86R, H01H 3534

Patent

active

049220675

ABSTRACT:
The invention is a fluid pressure switch which is particularly adapted for use on a water purifying system of the type wherein incoming water pressure and water pressure in a reservoir are used to activate conditioning electronics. In the preferred switch embodiment, a first flexible nonconducting layer of material is positioned over an orifice connected to a source of incoming water and over an orifice connected to a source of reservoir water. A flexible conducting material is positioned abutting the nonconducting layer over each of the orifices. A second layer of nonconductive material having conductive lines affixed thereto is laminated to the first nonconducting layer, such that fluid pressure deforms the conductive layer into electrical contact with the conductive lines. A semi-rigid backing plate, having air chambers formed therein at the location of each orifice, sealably clamps all of the layers to the body of the water purifier and is connected to the area surrounding the flexible conducting material to minimize the back pressure buildup when the flexible conductive material is deformed by water pressure.

REFERENCES:
patent: 3267233 (1966-08-01), Basile
patent: 3917917 (1975-11-01), Murata
patent: 4066851 (1978-01-01), White
patent: 4243858 (1981-01-01), Place
patent: 4602135 (1986-07-01), Phalen
patent: 4608465 (1986-08-01), Harada

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