Patent ID: 7325561

Claim:
A hydrogen powered vehicle having multiple on board tanks for the storage of hydrogen gas under pressure including a system for refilling more than one on board tank from a station refilling line connected to the tanks wherein: (1) each tank on the vehicle is connectable to the refilling line through a manifold and pressurized hydrogen from the refilling line flows into one or more on board tank; (2) a pressure sensitive check valve associated with each tank is interposed between the tank and the refill line wherein the tanks fill in order from the lowest pressure to the highest pressure until the rated capacity of the tank being filled is reached and the check valve associated with the tank being filled closes and pressurized hydrogen from the refilling line flows into a next one or more on board tank until the pressure in the next one or more on board tank reaches a predetermined level; and (3) the sequence of paragraph (2) is repeated for all tanks until all tanks are filled to the same predetermined pressure.