Patent ID: 7661568

Claim:
A combined fuel cell and combustion tool comprising: a combustion tool configured for receiving a fuel cell; said fuel cell having: a housing defining an open end enclosed by a closure and including an outlet seal; a main valve stem having an outlet and a stop member, said stem being disposed in operational relationship to said open end and reciprocating relative to said housing at least between a closed position wherein said stem is relatively extended and said stop member is engaged with said outlet seal to prevent movement of said stem past said closure, and an open position wherein said stem is relatively retracted and said stop member is dis-engaged from said outlet seal; a fuel metering valve located within said housing, associated with said main valve stem, including a fuel metering chamber defined in part by a metering chamber seal and configured so that when said stem is in said open position, only a measured amount of fuel is dispensed through said outlet, said stem having a radially enlarged portion periodically sealingly engaging said chamber seal such that in said closed position, said enlarged portion is dis-engaged from said chamber seal to allow the fuel to pass through a gap formed between said stem and said chamber seal, and in said open position, said enlarged portion is in engagement with said chamber seal sealing said gap and preventing the fuel from passing between said stem and said chamber seal; and said housing includes a separate fuel container, and said fuel metering valve includes a valve body that has a second end opposite said fuel metering chamber and located within said container, wherein the flow of fluid out the outlet of the fuel cell is solely from said separate fuel container.