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US 4,308,516 AGranted
Plug-in fuse assembly
AssigneeNissan Motor Co., Ltd.
InventorsYukio Shimada, Syuichi Otani, Susumu Hashimoto, Michio Kasamatsu, Teruo Suda, Noriyasu Saito
Life of this patent
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Abstract
A plug-in fuse assembly is disclosed which includes a fuse element made up of a pair of elongated current-carrying portions in spaced relationship and a fuse-forming link portion extending between the current-carrying portions. The fuse element is placed in an insulating casing with its terminal portions projecting therefrom. Means is provided for providing a fuse opening indication in response to heat generated from the fuse-forming link portion when it opens up.
Claims3
A plug-in fuse assembly comprising:
- (a) an insulating casing formed therein with a cavity;
- (b) a fuse element placed in said cavity of said casing, said fuse element made up of a pair of elongated current-carrying portions in spaced relationship, and a fuse-forming link portion extending between said current-carrying portions, said current-carrying portions having their bottom end portions extending from the bottom margin of said casing and their top end portions extending through the top wall of said casing;
- and
- (c) a resistance member placed on the outer surface of the top wall of said casing in contact with the top ends of said current-carrying portions to form a shunt electric circuit with said fuse-forming link portion, said member having a high resistance with its color changed when exposed to high temperature caused by current flow through said resistance member when said link portion is open.
1 more element
Dependencies are inferred from the claim text.