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A gas-generating apparatus includes a cartridge including a reservoir having a first reactant and a reaction chamber, and a receiver that can include a flow control device. The receiver is adapted to receive the cartridge and to transport the first reactant to the reaction chamber after connection w

A gas-generating apparatus includes a cartridge including a reservoir having a first reactant and a reaction chamber, and a receiver that can include a flow control device. The receiver is adapted to receive the cartridge and to transport the first reactant to the reaction chamber after connection with the cartridge. The flow control device is adapted to stop the transport of reactant when the pressure in the reaction chamber reaches a predetermined pressure.

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We claim: 1. A gas-generating apparatus comprising: a cartridge comprising a reaction chamber fluidly isolated from a reservoir containing a first reactant, and a receiver separate from the cartridge and adapted to receive the cartridge, wherein the cartridge and the receiver are removably connecta

We claim: 1. A gas-generating apparatus comprising: a cartridge comprising a reaction chamber fluidly isolated from a reservoir containing a first reactant, and a receiver separate from the cartridge and adapted to receive the cartridge, wherein the cartridge and the receiver are removably connectable to each other, and wherein the receiver comprises a flow control device capable of establishing a flow path connecting the reservoir to the reaction chamber for the first reactant to flow to the reaction chamber only when the cartridge is connected to the receiver, wherein when a pressure in the reaction chamber reaches a predetermined pressure, the flow control device closes to prevent the transport of the first reactant to the reaction chamber. 2. The gas-generating apparatus of claim 1, wherein the predetermined pressure comprises a predetermined difference between the pressure in the reservoir and the pressure in the reaction chamber. 3. The gas-generating apparatus of claim 1, wherein the reaction chamber comprises a second reactant. 4. The gas-generating apparatus of claim 3, wherein the second reactant is a solid and the first reactant is water. 5. The gas-generating apparatus of claim 3, wherein the second reactant comprises a metal borohydride. 6. The gas-generating apparatus of claim 1, wherein the flow of the first reactant into the reaction chamber generates the pressure in the reaction chamber. 7. The gas-generating apparatus of claim 1, wherein the cartridge is capable of connecting the cartridge to the receiver by at least one car sealing quick action coupler. 8. The gas-generating apparatus of claim 1, further comprising a catalyst, wherein the catalyst comprises at least one metal selected from the group consisting of iron, cobalt, nickel, ruthenium, rhodium, platinum, palladium, osmium, iridium, copper, silver, gold, zinc, cadmium, mercury, scandium, titanium, vanadium, chromium, and manganese. 9. The gas-generating apparatus of claim 3, wherein the second reactant is in a form of powder, pellets, porous structure, balls, tubes, soluble sheaths, deposited on walls of the reaction chamber, or a combination thereof. 10. The gas-generating apparatus of claim 1, wherein the reaction chamber contains a pressurized gas before the first use. 11. The gas-generating apparatus of claim 10, wherein the gas comprises nitrogen, oxygen, fluorine, chlorine, helium, neon, argon, krypton, xenon, radon, hydrogen, or a combination thereof. 12. The gas-generating apparatus of claim 1 further comprising at least one coupler capable of removably connecting the cartridge to the receiver. 13. The gas-generating apparatus of claim 12, wherein the at least one coupler is a quick action coupler. 14. The gas-generating apparatus of claim 1, wherein the reservoir is fluidly connected to the reaction chamber by three sets of couplers. 15. The gas-generating apparatus of claim 1, wherein the reservoir is pressurized. 16. The gas-generating apparatus of claim 15, wherein the reservoir is pressurized by a spring, piston, liquefied hydrocarbon, propellant gas, self contracting walls, or a combination thereof. 17. The gas-generating apparatus of claim 1, further comprising a liquid impermeable/gas permeable member. 18. The gas-generating apparatus of claim 1, wherein the reservoir, the reaction chamber, or both are pressurized prior to the cartridge being removably connected to the receiver. 19. The gas-generating apparatus of claim 1, wherein the first reactant is transported from the reservoir into the reaction chamber when the pressure of the reaction chamber is a predetermined amount lower than the pressure of the reservoir. 20. The gas-generating apparatus of claim 19, wherein the first reactant is transported from the reservoir into the reaction chamber when the pressure of the reaction chamber is about 2 psi lower than the pressure of the reservoir. 21. The gas-generating apparatus of claim 1, wherein the first reactant comprises water, at least one alcohol, at least one acid, or a combination thereof. 22. The gas-generating apparatus of claim 3, wherein the second reactant comprises a hydrogen-bearing fuel. 23. The gas-generating apparatus of claim 22, wherein the hydrogen-bearing fuel is in a solid form. 24. The gas-generating apparatus of claim 22, wherein the hydrogen-bearing fuel comprises a metal borohydride. 25. The gas-generating apparatus of claim 24, wherein the metal is a metal from Groups IA and IIA of the Periodic Table of the Elements. 26. The gas-generating apparatus of claim 3, wherein the first reactant, the second reactant, or combinations thereof comprises a catalyst. 27. The gas-generating apparatus of claim 26, wherein the catalyst comprises a metal from Group IB through Group VIIIB of the Periodic Table of the Elements. 28. The gas-generating apparatus of claim 26, wherein the catalyst is a CoCl2. 29. The gas-generating apparatus of claim 1, wherein the first reactant, the second reactant, or combinations thereof comprises an acid. 30. The gas-generating apparatus of claim 1, wherein the reaction chamber comprises at least one of a catalyst, a hydrogen bearing fuel, and an additive. 31. The gas-generating apparatus of claim 30, wherein the additive comprises at least one alcohol. 32. The gas-generating apparatus of claim 31, wherein the alcohol is CH3OH. 33. The gas-generating apparatus of claim 30, wherein the reservoir comprises at least one of a catalyst, an agent that is capable of reacting with the hydrogen-bearing fuel in presence of the catalyst to produce the gas, and an additive, wherein the reservoir and the reaction chamber differ in content. 34. The gas-generating apparatus of claim 33, wherein the additive comprises at least one alcohol. 35. The gas-generating apparatus of claim 34, wherein the alcohol is CH3OH. 36. The gas-generating apparatus of claim 1, wherein the cartridge is connected to the receiver by at least one coupler having an internal seal. 37. The gas-generating apparatus of claim 36, wherein one said coupler is positioned on the receiver and another said coupler is positioned on the cartridge. 38. The gas-generating apparatus of claim 37, wherein said two couplers are connected to each other when the cartridge is connected to the receiver. 39. The gas-generating apparatus of claim 38, wherein a first pair of said couplers when connected allows the first reactant to flow from the cartridge into the receiver, and a second pair of said couplers when connected allows the first reactant to flow into the reaction chamber. 40. The gas-generating apparatus of claim 36, wherein said coupler is adapted to connect to a valve component when the cartridge is connected to the receiver. 41. The gas-generating apparatus of claim 1, wherein the cartridge is connected to the receiver by at least a member selected from the group consisting of check valve, duckbill valve, solenoid valve, needle and septum, electrical valve and magnetic valve.