Electrical capacitor with thermal fuse
First Claim
1. AN ELECTRICAL CAPACITOR COMPRISING, IN COMBINATION, A SEALED CASING, A CONVOLUTELY WOUND COMPACT ROLL IN SAID CASING FORMED OF AT LEAST TWO CONDUCTING STRIP-SHAPED ELECTRODES INTERWOUND WITH INTERPOSED DIELECTRIC SPACER MATERIAL, SAID ELECTRODES HAVING INNER ENDS NEAR THE AXIS OF THE ROLL, AND THERMAL FUSE MEANS FOR DISCONTINUING THE OPERATION OF THE CAPACITOR PRIOR TO RUPTURE OF SAID CASING DUE TO ELEVATED TEMPERATURE WITHIN SAID ROLL, SAID THERMAL FUSE MEANS COMPRISING A THERMALLY FUSIBLE MEMBER COMPOSED OF ELECTRICALLY CONDUCTING MATERIAL HAVING A MELTING POINT OF ABOUT 190*-250*C. AND CONNECTED IN SERIES WITH ONE OF SAID ELECTRODES IN THE REGION OF SAID ROLL DEFINED BY THE INNERMOST ONE-THIRD OF THE LENGTH OF SAID ONE ELECTRODE.
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Accused Products
38 Citations
1 Claim
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1. AN ELECTRICAL CAPACITOR COMPRISING, IN COMBINATION, A SEALED CASING, A CONVOLUTELY WOUND COMPACT ROLL IN SAID CASING FORMED OF AT LEAST TWO CONDUCTING STRIP-SHAPED ELECTRODES INTERWOUND WITH INTERPOSED DIELECTRIC SPACER MATERIAL, SAID ELECTRODES HAVING INNER ENDS NEAR THE AXIS OF THE ROLL, AND THERMAL FUSE MEANS FOR DISCONTINUING THE OPERATION OF THE CAPACITOR PRIOR TO RUPTURE OF SAID CASING DUE TO ELEVATED TEMPERATURE WITHIN SAID ROLL, SAID THERMAL FUSE MEANS COMPRISING A THERMALLY FUSIBLE MEMBER COMPOSED OF ELECTRICALLY CONDUCTING MATERIAL HAVING A MELTING POINT OF ABOUT 190*-250*C. AND CONNECTED IN SERIES WITH ONE OF SAID ELECTRODES IN THE REGION OF SAID ROLL DEFINED BY THE INNERMOST ONE-THIRD OF THE LENGTH OF SAID ONE ELECTRODE.
Specification
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Current AssigneeCarl E. Paul, Frederick W. Grahame
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Original AssigneeCarl E. Paul, Frederick W. Grahame
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InventorsPaul, Carl E., Grahame, Frederick W.
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Application NumberUS04/357,345Time in Patent Office383 DaysField of SearchUS Class Current361/275.4CPC Class CodesH01G 2/16 with fusing elementsH01G 4/32 Wound capacitorsY10S 315/05 Starting and operating circ...
