Battery terminal post and cover construction

Claim 1

IN COMBINATION, A BATTERY CELL COV ER HAVING AN OPENING FOR A TERMINAL POST, SAID OPENING BEING DEFINED IN PART BY A VERTICALLY ELONGATED ANNULAR SURFACE AND IN PART BY LUG MEMBERS HAVING SUBSTANTIALLY RADIALLY EXTENDING LUG SURFACES, A NORMALLY VERTICAL METAL PAST PROJECTING THROUGH SAID OPENING IN SPACED RELATION TO SAID ANNULAR SURFACE OF THE COVER AND HAVING A VERTICALLY ELONGATED UPPER END PORTION PROJECTING ABOVE SAID COVER; A HEAT RESISTANT ELASTIC BUSHING INTERPOSED BETWEEN SAID POST AND SAID ANNULAR SURFACE OF THE COVER IN SEALING RELATION THERETO, A PREFORMED METAL BUSHING PROJECTING INTO SAID COVER OPENING, EMBRACING THE UPPER END PORTION OF SAID POST OVER A MAJOR PORTION OF THE PERIPHERAL AREA THEREOF ABOVE SAID COVER, SAID METAL BUSHING INCLUDING (A) AN INTEGRAL ANNULAR FLANGE PROJECTING AT THE UPPER SIDE OF SAID COVER, (B) A VERTICALLY ELONGATED SLEEVE PORTION PROJECTING UPWARDLY FROM SAID FLANGE ALONG SAID POST, AND (C) LUG MEMBERS FITTING IN INTERLOCKING RELATION TO SAID LUG MEMBERS OF COVER, THE AREA OF CONTACT BETWEEN THE LUG MEMBERS OF THE BUSHING AND COVER BEING SMALL IN RELATION TO THE AREA OF CONTACT BETWEEN SAID POST AND SAID ELASTIC BUSHING: A HEAT RESISTANT GASKET, INTERPOSED BETWEEN SAID ANNULAR FLANGE AND THE UNDERLYING SURFACE OF THE COVER, AND AN UPPER END MEMBER OF SAID POST RIGIDLY JOINED BY HEAT FUSION TO THE PROJECTING END PORTION ONLY OF THE POST AND TO SAID SLEEVE PORTION ONLY OF SAID BUSHING.