Vacuum-controlled switch means responsive to engine load

Details Vacuum-controlled switch means responsive to engine load Vacuum-controlled switch means responsive to engine load

1990-10-22

1992-07-14

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Plural switch

123389, 200835, 200294, H01H 3534

Patent

active

051305020

ABSTRACT:
A vehicle switch means includes an electric switch operatively closed or opened as driven by a central spindle controlled by a vacuum controller communicated with an inlet manifold of a car engine, whereby when the car is subject to a heavy load, the weak vacuum suction force in the inlet manifold will not suck a diaphragm in the vacuum controller and the spindle will be resiliently restored outwardly to switch off the electric switch to stop the running of compressor of a car air conditioner, thereby reducing the car engine load and being helpful for climbing a steep surface.

REFERENCES:
patent: 3946174 (1976-03-01), Herbst
patent: 4445341 (1984-05-01), Hayashi
patent: 4900883 (1990-02-01), Brame
patent: 4951810 (1990-08-01), Everett

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