Fuel cell

Claim 1

A SELF-SEALING LIQUID HYDROCARBON FUEL CONTAINER, THE WALLS OF WHICH COMPRISE AN OUTER LAYER OF DURABLE ABRASION-RESISTANT MATERAL, ON THE INNER SIDE THEREOF A SEALANT LAYER COMPRISING ESSENTAILLY A RUBBER-LIKE MATERIAL ADAPTED TO SWELL ON CONTACT WITH A HYDROCARBON LIQUID FUEL, SAID SEALANT LAYER COMPRISING AT LEAST ONE-PLY OF MAERIAL SELECTED FROM THE CLASS CONSISTING OF NATURAL RUBBER, BUTADIENE-STYRENE SYNTHETIC RUBBER, POLYBUTADIENE SYNTHETIC RUBBER, HIGH MOLECULAR WEIGHT POLYMERIZED OLEFINS AND HIGH MOLECULAR WEIGHT ISO-OLEFIN-DIOLEFIN COPOLYMERS, AND ON THE INSIDE OF SAID SEALANT LAYER A FUEL-RESISTANT LAYER COMPRISING A PLURALITY OF LAMINAE MADE OF FUEL-RESISTANT RUBBER COMPOSITIONS THE RUBBERY CONSTITUENTS OF WHICH CONSIST OF COPOLYMERS OF A CONJUGATED DIOLEFIN AND A NITRILE OF A LOW MOLECULAR WEIGHT UNSATURATED ACID, THE NITRILE CONTENT OF SAID COPOLYMERS RANGING FROM 10 TO 40% BY WEIGHT, AND THE NITRILE CONTENT OF THE COPOLYMER IN THE INNERMOST LIAMINA BEING SUBSTANTIALLY GREATER THAN THE NITRILE CONTENT OF THE COPOLYMER IN THE FUEL-RESISTANT LAMINA IMMEDIATELY ADJACENT TO THE SEALANT LAYER, THE SAID LAYERS BEING BONDED TOGETHER TO PRODUCE A LAMINATED FUEL-RESISTANT WALL CONSTRUCTION HAVING HIGH FUEL-RESISTANCE CHARACTERISTICS YET GOOD FLEXIBILITY AND RESISTANCE TO CHUNKING AND SHATTERING AT LOW TEMPERATURE.