Metallized capacitor with protective interrupter device and method of making the same
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United States of America Patent
Stats
-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Mar 5, 1985
filing date -
Mar 5, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metallized capacitor is formed by winding at least two thin metallized dielectric films into a cylinder, the ends of which are sprayed or metallized and connected to externally mounted terminals. A protective interrupter is provided by connecting a very thin electrically conductive strip to one of the metallized ends and running the conductive strip over the surface of the outside metallized film to one of the externally mounted terminals. The capacitor so formed is embedded in heat cured epoxy so that the strip is integrated within the rigid epoxy case. Accordingly, the strip will tear or separate on any swelling or cracking of the epoxy case due to a faulty capacitor and thereby interrupt the power supply. The conductive strip may be scored at intervals along the length thereof in order to enhance its shearing or tearing ability.
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