| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tension type gas release preventer using a friction ring whose tension specifying function can be stably kept for a long period. <P>SOLUTION: The tension type gas release preventer 1 comprises a fixed unit 2 and a movable unit 3. The fixed unit has a fit-in supporting cavity 15 and a thrust supporting face portion 24, and it can be fixed and connected to a gas supply source. The movable unit 3 has a fit-in portion 31 and a hose joint portion 32, and the fit-in portion 31 is slidably fitted in the fit-in supporting cavity in the state of being connected to a gas hose 5 via the hose joint portion. Besides, between the fixed unit and the movable unit, the friction ring 25 is laid in the state of being thrust against the thrust face portion. A lubricative coat 36 is formed on the friction ring. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
