Electric fuses with regions of reduced cross-sectional area
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United States of America Patent
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-
Aug 24, 1982
Grant Date -
N/A
app pub date -
Sep 29, 1980
filing date -
Oct 10, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electric fuse according to this invention incorporates metal end caps and an elongate fuse element having regions of reduced cross-sectional area and extending in electrical series between the metal end caps, wherein the fuse incorporates within each end a respective gasket of an absorbent material impregnated with an arc-inhibiting substance. Materials which have been found to be particularly effective for the gaskets are asbestos and absorbent types of paper, including strawboard and cardboard, impregnated with an arc-inhibiting compound constituted, suitably, by sodium silicate.
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