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US 4,926,153 AGranted
Ceramic fuse wire coating
AssigneeCooper Industries, Inc.
InventorLeon Gurevich
Life of this patent
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Abstract
A ceramic coating for a subminiature fuse includes sodium silicate and silicon dioxide applied over a subminiature fuse wire in slurry form. The coating gives the fuse arc quenching properties.
Claims3
A fuse, comprising:
- a fusing link disposed between conductive areas and in electric engagement therewith;
- leads attached to said conductive areas and projecting therefrom;
- a ceramic coating enveloping said fusing link including forty to eighty percent silicon dioxide having a maximum size of 120 mesh in a mixture with sufficient sodium silicate to make up one hundred percent of said ceramic coating;
- and
- a plastic coating encapsulating said ceramic coating and substrate.
2 more elements
Dependencies are inferred from the claim text.