Blown fuse indicator for electrical fuse

Details Blown fuse indicator for electrical fuse Blown fuse indicator for electrical fuse

1997-04-25

1998-07-14

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337142, 337241, 337401, H01H 8530

Patent

active

057810958

ABSTRACT:
A blown fuse indicator, having an insulating element, a current-carrying element overlaying the insulating element, and a substantially transparent window. A chemical composition coats at least a portion of the insulating element. The improvement comprises a meltable link in generally parallel proximity to the insulating element. The meltable link, which can be made of solder, melts to open an indicating circuit of the blown fuse indicator upon predetermined thermal overload conditions.

REFERENCES:
patent: 1857019 (1932-05-01), Hassell et al.
patent: 3596218 (1971-07-01), Layton
patent: 3729607 (1973-04-01), Ellenberger
patent: 4445106 (1984-04-01), Shah
patent: 4636765 (1987-01-01), Shah
patent: 4760367 (1988-07-01), Williams
patent: 5111177 (1992-05-01), Krueger et al.
patent: 5345210 (1994-09-01), Swenson et al.

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