| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely screw in/detach a cap, and to easily drive an inside stopper into a mouth-and-neck part of a vessel body. <P>SOLUTION: First ribs 7 are annexed to the outer surface of the mouth-and-neck part 3 of the vessel body at regular intervals, and second ribs 25 are annexed to the inner surface of a peripheral wall 14 of the inside stopper 11, which is to be fitted into the part 3 and whose upper part is provided with an internal thread, at regular intervals. When the under surface of the second rib 25 is brought into contact with the top surface of the first rib 7, inclined planes 8, 26 and 41 for guiding each of the second rib 25 between the first ribs 7 are formed at the upper end of the first rib 7 and the lower end of the second rib 25. <P>COPYRIGHT: (C)2004,JPO |
