Patent ID: 7445863

Claim:
Elementary cell ( 1 ) for fuel cell ( 100 ) comprising two electrodes ( 8 , 14 ) between which an ion exchange membrane ( 20 ) is positioned, characterized in that one of said two electrodes ( 14 ) has a threaded surface ( 18 ), the threaded surface carrying the ion exchange membrane ( 20 ), an assembly formed by said one of said two electrodes ( 14 ) and the ion exchange membrane ( 20 ) being able to be assembled by screwing onto a threaded surface ( 10 ) belonging to the other of said two electrodes ( 8 ), and further characterized in that one of said two electrodes ( 14 ) includes a coating deposited on a screw ( 12 ), and in that the other of said two electrodes ( 8 ) includes a coating deposited on a nut ( 4 ) formed in a substrate ( 2 ).