Abstract: A soldering iron capable of eliminating static charges accumulated on an operator or materials to be soldered simply without using no particular charge elimination device, the soldering iron comprising a combustion catalyst for complete combustion of a gas mixture of a fuel gas and air, a soldering iron tip heated by the combustion catalyst, a gas conduit for exhausting a combustion exhaust gas from the combustion catalyst along the outer circumference of the soldering iron tip toward the top end, and an electric conduction mechanism for electrically connecting an operator for conducting soldering and the soldering iron tip, fuel gas combustion products which are ionized and forming steams upon catalytic combustion contributing to charge elimination.

Abstract: A soldering iron capable of eliminating static charges accumulated on an operator or materials to be soldered simply without using no particular charge elimination device, the soldering iron comprising a combustion catalyst for complete combustion of a gas mixture of a fuel gas and air, a soldering iron tip heated by the combustion catalyst, a gas conduit for exhausting a combustion exhaust gas from the combustion catalyst along the outer circumference of the soldering iron tip toward the top end, and an electric conduction mechanism for electrically connecting an operator for conducting soldering and the soldering iron tip, fuel gas combustion products which are ionized and forming steams upon catalytic combustion contributing to charge elimination.

Abstract: A gas combustion method and apparatus for performing such comprises supplying a fuel gas, generating a gas mixture composed of the fuel gas and external air, diffusing the gas mixture through a diffusion member to lower a flow velocity of thereof, putting the gas mixture to flaming combustion in a cylindrical combustion chamber thereby elevating the temperature of a combustion catalyst disposed to the downstream end of the combustion chamber by the heat of the flaming combustion, then ceasing the diffusion of the gas mixture to increase the flow velocity thereof in the combustion chamber, thereby extinguishing the combustion flame and directly supplying the gas mixture to the combustion catalyst. The gas mixture is put into and out of diffusion by an actuating mechanism that brings a diffusion member into and away from the entrance of the combustion chamber.