| 摘要 |
PURPOSE:To increase the jetting speed. CONSTITUTION:A gas reservoir chamber 21 and a resistor 32 are provided between a gas producing part 20 and a cylinder 22 through which a piston 23 advances. The resistor 32 is composed of a plate unit composed of paper, etc., broken with the pressure of the gas, a partition plate having an opening, etc. Thereby, since the piston 23 advances not just after the production of the gas but after the interior of the gas reservoir chamber 21 once attains a high pressure. As a result, the high pressure is sufficiently utilized to accelerate the jetting to a high speed. |
