Patent attributes
A power generator having a fuel cell and a fuel container in an enclosure with a pneumatic slide valve interposed between the fuel cell and the fuel container. The fuel cell may provide water vapor which goes to react with the fuel of the container and result in a production of hydrogen for the fuel cell. The valve may be connected to a pressure sensitive membrane that is linked to the valve such that when the pressure within the enclosure increases, the membrane will begin to move and close the valve to cut off the supply of water vapor to the fuel to reduce hydrogen production and consequently the pressure. With a reduction or stoppage of hydrogen production, the pressure may decrease and the membrane may begin to open the valve to let in water vapor to the fuel to make more hydrogen.