Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1984-11-26
1986-05-06
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337338, 337347, H01H 3774
Patent
active
045875081
ABSTRACT:
A bimetal circuit breaker switch assembly has two parallel, side-by-side arranged snap switches associated with two circuits independent from one another, a plate-like bimetal element which is, at its arcuately moving free end, operatively connected with the actuating ends of the snap switches, and a desired value setter arranged approximately at right angles to the length dimension of the snap switches. To a freely swinging end of the transmitting element there is secured a snap spring which is biased and which is stamped out of the plate material forming the snap contacts. The movable end of the bimetal element is formed of spaced legs bent generally perpendicularly to the bimetal element. The transmitting element includes a first spring plate in contact with the desired value setter and a second spring plate disposed parallel spaced from the first spring plate and divided into two spring legs having free ends bent generally perpendicularly to the spring legs. Each snap contact comprises an approximately rectangular frame having a cut and bent-out inner area forming the respective snap spring. The frame has a transverse terminal web constituting the actuating end of the respective snap switch. The free end of each snap spring is supported by respective spring legs under bias of each snap spring. Each terminal web straddles a respective terminal leg of the bimetal element under a tensioning bias of each frame. Two separate setting lugs, one being a setscrew, are arranged between the first and second spring plates.
REFERENCES:
patent: 4476453 (1984-10-01), Hollweck
Broome Harold
Inter Control Hermann Kohler Elektrik GmbH & Co. KG
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