Thermal protector

Details Thermal protector Thermal protector

1992-08-18

1993-08-10

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 89, 337102, 337380, H01H 3714, H01H 3754, H01H 6102

Patent

active

052353087

ABSTRACT:
A thermal protector comprises a case having a space surrounded by a bottom surface and a wall surface; a pair of fixed electrodes secured to the bottom surface of the case and located so as to be separated from each other in the space; a disk-shaped bimetal disposed in the space so as to be opposite to the fixed electrodes; a pair of contacts disposed on extremity portions of a surface of the bimetal opposite to the fixed electrodes, the bimetal being either in a conductive state, where the contacts are in contact with the pair of fixed electrodes, or in a non-conductive state, where, the bimetal being deformed, depending on temperature, they are not in contact with the pair of fixed electrodes; and inclined portions disposed on the wall surface with a predetermined interval from the extremity portions of the bimetal when the bimetal is deformed.

REFERENCES:
patent: 4047141 (1977-09-01), Holden
patent: 4885560 (1989-12-01), Niino et al.

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