Container seal for electrolytic capacitors

Claim 1

A CONTAINER ASSEMBLY FOR ELECTROLYTIC CAPACITORS OPERATING WITH AN ESSENTIALLY ANHYDROUS ELECTROLYTE OF WHICH THE SOLVENT IS PRINCIPALLY A VAPORIZABLE ORGANIC COMPOUND, COMPRISING A VESSEL HAVING A CYLINDRICAL END PROVIDED SLIGHTLY BELOW THE MOUTH OF THE VESSEL WITH A CIRCULAR INDENTATION TO AFFORD AN-INNER CIRCULAR SHOULDER; AN INSULATING PLUG SEALING THE VESSEL AT SAID SHOULDER AND CONSISTING OF AN ELASTIC, POLYMERIZED AND GAS-PERVIOUS, THERMOPLASTIC COMPOUND, INERT TO THE SAID ELECTROLYTE AND IMPERVIOUS TO ITS VAPOR, AND OF AN OUTER DIAMETER SLIGHTLY SMALLER THAN THE INNER DIAMETER OF SAID MOUTH, SAID PLUG RESTING FREELY ON SAID SHOULDER, AND THE RIM OF THE VESSEL WALL BEING CRIMPED INWARDLY OVER THE PLUG AS A MEANS TO HOLD THE LATTER TO THE VESSEL AND TO FORCE IT CIRCUMFERENTIALLY INTO SEALING CONTACT ALONG SAID SHOULDER; AND AT LEAST ONE LEAD PASSING THROUGH THE PLUG AND THERMALLY SELF-SEALED THERETO.