Coil spring biased current limiter

Details Coil spring biased current limiter Coil spring biased current limiter

1981-07-08

1983-02-01

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 91, 337343, H01H 3754, H01H 3774

Patent

active

043718590

ABSTRACT:
First and second fixed terminals are mounted in a casing and have one ends projecting out of the casing. Inside the casing, a bimetal extends between the first and second fixed terminals, the bimetal having one end secured to the first fixed terminal. The other end of the bimetal is held in engagement with one end of a coil spring disposed around a pivotable lever pivotably supported on the casing, the other end of the coil spring engaging the pivotable lever. When a current flowing through the bimetal exceeds a predetermined amount, the bimetal is bent to cause a contact supported on a distal end thereof to move rapidly out of contact with a contact supported on the second fixed terminal under the resiliency of the coil spring acting on the bimetal.

REFERENCES:
patent: 2262205 (1941-11-01), Schachtner
patent: 2775667 (1956-12-01), Greenawalt
patent: 2911503 (1959-11-01), Garbers
patent: 3846729 (1974-11-01), Sorimachi

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