Pneumatically operated pressure switch, particularly for vehicle

Details Pneumatically operated pressure switch, particularly for vehicle Pneumatically operated pressure switch, particularly for vehicle

1976-10-07

1978-04-04

Tolin, Gerald P.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

200 83P, 200 83L, 340 58, H01H 3534

Patent

active

040829600

ABSTRACT:
To provide positive on-off switching when a pneumatic pressure threshold is passed, a movable switching element is magnetically attracted by a moving magnet, movable under force of a pressure diaphragm subjected to the pneumatic pressure. The movable switch element itself is biassed away from the magnet by a spring which is weaker than the restoring spring counteracting the pneumatic pressure. The non-linear displacement-force characteristics of the magnet cause snap action of the movable switch element, thus providing positive switching at accurately predeterminable pressure positions.

REFERENCES:
patent: 2628296 (1953-02-01), Dillman
patent: 3250873 (1966-05-01), Kudlaty
patent: 3963887 (1976-06-01), Takusagawa

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