Primary dry cells

Claim 1

A PRIMARY DRY CELL COMPRISING, IN COMBINATION, A CUPPED ELECTRODE OF A CONSUMABLE METAL HAVING AN UPPER OPEN END, THE PERIPHERAL EDGES OF WHICH ARE TURNED SLIGHTLY INWARDLY; A DEPOLARIZER MIX AND AN ELECTROLYTE DISPOSED WITHIN SAID CUPPED ELECTRODE; A CENTRAL POROUS CARBON ELECTRODE EMBEDDED WITHIN SAID DDPOLARIZER MIX; A NONCORRDIBLE JACKET SURROUNDING SAID CUPPED ELECTRODE AND COMPOSED OF A MULTIPLE-PLY, LAMINATED TUBE STRUCTURE COMPRISING A FIRST LAMINATE OF A HIGH STRENGTH, LIQUID IMPERMEABLE PLASTIC MATERIAL AND A THERMOPLASTIC MATERIAL AND A SECOND LAMINATE OF A THERMOPLASTIC MATERIAL AND A FIBROUS CELLULOSIC MATERIAL, THE THERMOPLASTIC MATERIAL OF SAID FIRST AND SECOND LAMINATES BEING BONDED TOGETHER BY AUTOGENOUS ACTION UNDER HEAT; A METALLIC TOP CLOSURE FITTED OVER THE TOP OF SAID CARBON ELECTRODE, SAID TOP CLOSURE HAVING ITS OUTER EDGES LOCKED IN LIQUID-TIGHT ENGAGEMENT WITH SAID JACKET AND HAVING GAS VENTING MEANS THEREIN, SAID LIQUID IMPERMEABLE PLASTIC MATERIAL OF SAID LAMINATED TUBE BEING DISPOSED IN SEALING RELATION AGAINST THE OUTER EDGES OF SAID TOP CLOSURE; A DISPLACEABLE INNER SEAL POSITIONED WITHIN SAID OPEN END OF SAID CUPPED ELECTRODE AND BETWEEN SAID TOP CLOSURE AND SAID DEPOLARIZER MIX AND EXTENDING FROM AROUND SAID CARBON ELECTRODE TO THE INNER SIDE WALLS OF SAID CUPPED ELECTRODE, DEFINING A LOWER FREE SPACE BETWEEN SAID SEAL AND SAID DEPOLARIZER MIX FOR THE COLLECTION OF LIQUID FROM SAID CELL AND AN UPPER FREE SPACE BETWEEN SAID SEAL AND SAID TOP CLOSURE FOR THE PASSAGE OF GAS FROM WITHIN SAID CELL AND THROUGH SAID GAS VENTING MEANS IN SAID TOP CLOUSER, SAID INNER SEAL BEING DISPLACEABLE IN A DIRECTION TOWARDS SAID TOP CLOUSRE IN RESPONSE TO GAS PRESSURE FROM SAID CELL AND BEING CAPABLE OF SEALING OFF SAID UPPER FREE SPACE FROM THE LIQUID IN SAID LOWER FREE SPACE EVEN UNDER THE INFLUENCE OF SAID GAS PRESSURE; A GAS PERMEABLE VENTING WASHER FITTED AROUND SAID CARBON ELECTRODE AND OVER THE UPPER PERIPHERAL EDGES OF SAID CUPPED ELECTRODE WITHIN SAID UPPER FREE SPACE, THE OUTER EDGES OF SAID VENTING WASHER ABUTTING AGAINST THE INTERIOR WALL OF SAID JACKET; AND A PERIPHERAL BEAD SEAL DISPOSED BELOW SAID VENTING WASHER IN THE SPACE LEFT BY THE INWARDLY TURNED UPPER EDGES OF SAID CUPPED ELECTRODE AND BETWEEN SAID CUPPED ELECTRODE AND SAID INTERIOR WALL OF SAID JACKET.