| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a good arbitrary useful product being less in a liquid leakage by surely holding a connected pipe so far checked whether it is assembled to a normal position or not, to a joint main body through a window, by a keep ring. SOLUTION: An inner cylinder 3 and an outer cylinder 4 are concentrically installed in the other one end side of a joint main body 1 installed with a first male screw to be screwed in an apparatus (a) at the one end. An engaging void 7 fitted with a connected pipe 6 is installed in space between both these inner and outer cylinders 3 and 4. In addition, a keep ring 13 to be diametrally contracted by forcibly pressed by the outer cylinder 1, and a tense nut 12 screwed in this outer cylinder 1, is made so as to be interposed between this tense nut 12 and the inner cylinder 3, and then a window 8 being superposed on the engaging void 7 is installed in the outer cylinder 4.</p> |
