Differential pressure switch device responsive to differential p

Details Differential pressure switch device responsive to differential p Differential pressure switch device responsive to differential p

1979-06-21

1981-05-12

Tolin, Gerald P.

Internal-combustion engines

Engine speed regulator

Engine speed reduction by fuel cutoff

335208, 200 83L, 200 815, H01H 3534

Patent

active

042665175

ABSTRACT:
A differential pressure switch device having a flexible diaphragm between two chambers subject to differential pressure, a permanent magnet movable with the diaphragm against a biasing force when pressure differences occur in the chambers, a thermo ferrite combined with the magnet for cooperation therewith, and a reed switch assembly actuated by the movement of the magnet and through the action of the thermo ferrite which becomes magnetic or non-magnetic depending on the temperature.

REFERENCES:
patent: 2927176 (1960-03-01), Auld, Jr.
patent: 3342959 (1967-09-01), Breunich
patent: 3649936 (1972-03-01), Masuda
patent: 3654956 (1972-04-01), Tsubouchi
patent: 3946175 (1976-03-01), Sitabkhan
patent: 3978299 (1976-08-01), Takai
patent: 4084072 (1978-04-01), Tsubota
IBM Tech. Discl. Bull., Multiconfiguration Pressure Switch, Bolan et al., vol. 8 No. 7, Dec. 1965.

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