Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1987-06-29
1989-01-17
Zimmerman, John J.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337343, 337365, H01H 6106
Patent
active
047990384
ABSTRACT:
This invention provides a snap-action heat responsive device employing a bimetallic strip which is typically used with a thermostat, a temperature-protecting apparatus or the like. Two elongated portions of the bimetallic strip oppose each other so that they may be deflected in the opposite directions to double the amount of displacement of the bimetallic strip and in addition so that they may be urged in the opposite directions. This enables swift reverse of the bimetallic strip and also production of a small-sized bimetallic device suitable for use as a miniature current limiter for handling an electric current of about one ampere. It is therefore possible to produce a snap-action heat responsive device having a high sensitivity with respect to variations in temperature.
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patent: 2558219 (1951-06-01), Kohl
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patent: 4151383 (1979-04-01), Miyata
patent: 4159155 (1979-06-01), Heydnev
Tobu Electric Co., Ltd.
Zimmerman John J.
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