Abstract: An oxygen generating system for continuously generating oxygen gas by the catalytic decomposition of an aqueous hydrogen peroxide, includes a catalyst having a platinum group catalyst component carried on a highly porous sintered ceramic support of a large pore size and a reaction chamber for accommodating the catalyst. The system further includes a control device for controlling the operation of the hydrogen peroxide supplying based on a detection signal from a pressure sensor for detecting the pressure of the generated oxygen gas.The oxygen generating system is compact and reduced in weight due to the catalytic decomposition of hydrogen peroxide at high concentration, which can be carried out effectively and safely under an increased temperature.

Abstract: A hot blow generating device utilizing a liquefied gas as a heat source comprises fuel gas jetting means, air/fuel gas mixture forming means by the ejector effect of the jetting fuel gas, catalytic combustion means formed with a plurality of linear axial gas flow channels, hot blow discharging means, and means for forcively supplying an air stream at least partially to said air/fuel gas mixture forming means depending on the combustion temperature in the device. A hot blow at a great flow rate can be obtained in a structure small in the size and reduced in the weight, safely and conveniently.

Abstract: A heat processing device using a liquefied gas comprises a nozzle for jetting a liquefied gas, a gas mixture generating member disposed at the exit of the nozzle for sucking external air through an external air intake port under the ejector effect of the gas jetted out from the nozzle to form a gas mixture, a fire nozzle member for jetting out the thus formed gas mixture to take place flaming combustion, and an air flow control member for controlling the flow rate of air flowing through the air intake port into the gas mixture generating member. The heat processing device further comprises an iron tip member having a combustion catalyst detachably disposed near the top end of the fire nozzle, in which the air intake port in the fully opened state is once closed fully and then fully opened again by the operation of the air flow rate control member interlocking with the operation of the shutter member for closing/opening the space between the fire nozzle and the combustion catalyst.

Abstract: A heating iron utilizing the heat obtained through complete catalytic combustion of liquefied gas comprises a catalyst combustion chamber having an inner gas flow channel confined therein and in direct connection with a gas mixture generating means and a pre-heating zone disposed to the outer circumferential surface of the catalyst combustion chamber, in which the pre-heating zone is heated upon start of the catalytic combustion to heat the catalyst layer in the catalyst combustion chamber to a temperature sufficient for starting the catalytic oxidizing reaction in a flameless manner.

Abstract: A copper soldering tip with uniform and intact iron protection is manufactured by plating an iron layer of adequate hardness on the surface of a copper substrate to form a tip blank and then shaping the thus formed blank under pressure into a desired final tip configuration. The soldering tip has a uniform erosion resistance and can be produced with ease at a good yield.