Thermostat-controlled electric switch

Details Thermostat-controlled electric switch Thermostat-controlled electric switch

H - Electricity

01

H

306/191

H01H 37/38 (2006.01) H01H 35/26 (2006.01)

Patent

CA 1197538

ABSTRACT OF DISCLOSURE A quick-breaking thermostatic switch is used to keep the temperature of a chamber between two levels, both below zero Centigrade, and also to raise the upper limit temporarily above zero, for a single operating cycle. This switch combines a switch-control level, movement of which is governed by a bellows device containing an expandable fluid, with a second lever, designed to keep the first lever temporarily in a position corresponding to the open position of the switch contacts. Means are provided for this second lever, controlled by a push-button, to return automatically to its starting position, as a result of the thrust exerted by the bellows device, when such thrust reaches a predetermined level.

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