Easy opening can end

Claim 1

AN EASY OPENING CAN ADAPTED TO HOLD CARBONATED BEVERAGES THEREIN UNDER PRESSURE WHEN A SECOND END IS PERMANENTLY ATTACHED THERETO IN PRESSURE-TIGHT RELATION COMPRISING, IN COMBINATION, (A) A CYLINDRICAL METAL BODY PORTION, AND (B) AN EASY OPENING FIRST END FIXEDLY ATTACHED TO SAID BODY PORTION, SAID EASY OPENING END COMPRISING, (1) A SUBSTANTIALLY FLAT END PORTION INCLUDING OUTER PERIPHERAL EDGE PORTIONS THEREOF, SAID PERIPHERAL EDGE PORTIONS BEING FIXEDLY ATTACHED TO AN END OF SAID METAL BODY PORTION BY A PERMANENT SEAM, (2) AT LEAST ONE AIR VENT OPENING WITH AT LEAST A PORTION THEREOF DISPOSED GENERALLY CENTRALLY OF SAID CAN END, (3) A PLURALITY OF POUR OPENINGS DISPOSED CLOSELY ADJACENT ONE ANOTHER AND WITH AT LEAST PORTIONS THEREOF DISPOSED ADJACENT SAID OUTER EDGE PORTIONS, ALL OF SAID POUR OPENINGS BEING LOCATED WITHIN A SECTOR OF SAID END PORTION WHICH IS SUBTENDED BY AN ANGLE OF NOT SUBSTANTIALLY GREATER THEN 90*, (4) A GAS-IMPERMEABLE EXTERIOR TAPE PORTION, INCLUDING A FINGER-TAB-CONTAINING END PORTION THEREIN, SAID TAPE PORTION COMPRISING A FLEXIBLE METAL TAPE OF A THICKNESS LESS THAN 0.006" AND MADE FROM A MATERIAL OF THE CLASS CONSISTING OF STEEL AND ALUMINUM, SAID TAPE PORTION COVERING ALL OF SAID OPENINGS AND BEING REMOVABLY ATTACHED TO THE EXTERIOR SURFACE OF SAID CAN END, (5) AN ORGANIC ADHESIVE COMPOSITION ATTACHING SAID TAPE TO SAID END PORTION, (6) INNER SEAL MEANS OF AN ORGANIC PLASTIC MATERIAL COVERING ALL OF SAID OPENINGS, SAID SEAL MEANS COVERING AN AREA OF LESS THAN HALF OF THE INTERIOR SURFACE OF SAID CAN END PORTION.