Fuse
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United States of America Patent
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-
Aug 17, 2004
Grant Date -
Feb 5, 2004
app pub date -
Mar 12, 2003
filing date -
Aug 5, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fuse that can be made small while improving its breaking performance. An element 3 is securely held between the two lengthwise ends of a tubular fuse casing 2 and a pair of metal plates 4 having a melting point of more than 1000.degree. C. The ends of the fuse casing 5 are respectively pushed into caps 5 so that the caps are fitted to the fuse casing 2 in such a manner as to cover the metal plates 4. The metal plates 4 protect the caps 5 from direct exposure to an arc discharge, which occurs when the element 3 fuses due to an overcurrent. Even if the fuse casing is made small, the metal plates 4 reliably interrupt overcurrent by absorbing the energy of an arc discharge.
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