Alkaline cylindrical dry cell

Claim 1

A SEALED ALKALINE PRIMARY CELL COMPRISING, IN COMBINATION, AT LEAST ONE GENERALLY CYLINDRICAL COHERENT CONDUCTIVE CATHODE BODY CONTAINING AN ELECTROLYTICALLY REDUCIBLE OXYGEN-YIELDING COMPOUND AND HAVING AN AXIAL CHANNEL THERETHROUGH, A TERMINAL ROD OF FERROUS METAL EXTENDING THROUGH SAID CHANNEL AND HAVING A DIAMETER WHICH IS SMALLER THAN THAT OF THE CHANNEL, THE INNER SURFACE OF SAID CHANNEL DEFINING AN EXPANSION OF SAID WITH SAID ROD FOR FREE RADIAL EXPANSION OF SAID CATHODE BODY, AN APERTURED METAL CONTACT PLATE FORCE-FITTED ON EACH END OF SAID ROD IN PRESSURE ENGAGEMENT WITH THE CORRESPONDING END FACE OF SAID CATHODE BODY THEREBY HOLDING THE SAID BODY UNDER AXIAL COMPRESSION BUT RADIALLY SPACED FROM THE ROD, AN AMALGAMATED ZINC ANODE SURROUNDING SAID CATHODE, AN IMMOBILIZED BODY OF AN ALKALINE ELECTROLYTE INTERPOSED BETWEEN AND IN CONTACT WITH SAID CATHODE AND ANODE, AND A CONTAINER OF A METAL SELECTED FROM THE GROUP OF COPPER AND SILVER FOR SAID CELL SURROUNDING AND IN CONTACT WITH SAID ANODE, THE QUANTITY OF ZINC BEING BALANCED WITH THE DEPOLARIZING CAPACITY OF THE CATHODE SO THAT BOTH ANODE AND CATHODE ARE CONSUMED SUBSTANTIALLY SIMULTANEOUSLY.