| 摘要 |
PURPOSE:To make gas stoppable in a moment, by installing such an iron ball as capable of stopping a gas discharge port, inside a rectangular parallelepiped being installed free of rotation as well as installing an electromagnet in position upward one end of the rectangular parallelepiped. CONSTITUTION:A rectangular parallelepiped 1 is rotatably attached to an L- shaped metal device 9. And, a gas feed port 4 and a discharge port 5 are installed at the side of the upper part of this rectangular parallelepiped 1, while an iron ball 3 is installed inside the rectangular parallelepiped 1. With this constitution, when the electromagnet 6 is energized with current, the rectangular body 1 rotates upward whereby the iron ball 3 closes the gas discharge port 5 in a moment. Therefore, gas can be stopped instantaneously.
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