Electric time switch

Details Electric time switch Electric time switch

1978-06-22

1980-05-27

Moses, R. L.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

219486, 337104, 337105, H01H 7116, H01H 7122

Patent

active

042052920

ABSTRACT:
An electric time switch mechanism is provided comprising a plurality of units each having an operating thermal expansion member, for example, a bimetallic member. Electrical heating means are provided for the thermal expansion member and a switch is activated by the thermal expansion member. The units are connected in series in such a way that the activation of a switch turns off the heating means of the associated thermal expansion member and turns on that of the following units. The switches remain in the activated state after activation and are resettable by external activation.

REFERENCES:
patent: 3587023 (1971-06-01), Goessler et al.
patent: 3713062 (1973-01-01), Butler et al.

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