Differential pressure switch

Details Differential pressure switch Differential pressure switch

1982-08-31

1984-10-30

Scott, J. R.

Electricity: circuit makers and breakers

Fluid pressure

Piston

200 82D, H01H 3538

Patent

active

044801602

ABSTRACT:
A differential pressure switch is disclosed. The switch functions through a conductive path formed within the fluid of a single cavity of a housing having passages for communicating high and low pressure fluid to the cavity. The switch has a cantilevered post with movable conducting and nonconducting members mounted thereabout and being movable between conductive and nonconductive states according to the differential pressure within the cavity. One of the movable members provides sealing between the post and the cavity wall to separate the high and low pressure fluids.

REFERENCES:
patent: 2251648 (1941-08-01), Wayman
patent: 2772409 (1956-11-01), Reid
patent: 2810034 (1957-10-01), Grant
patent: 2826754 (1958-03-01), Carignan
patent: 2879892 (1959-03-01), Frakes
patent: 3239625 (1966-03-01), Clason
patent: 3644915 (1972-02-01), McBurnett
patent: 3654414 (1972-04-01), Kudlaty
patent: 3780243 (1973-12-01), Koomey et al.

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