| 摘要 |
PROBLEM TO BE SOLVED: To provide a multistage bottle.SOLUTION: Respective sealed vessels 10a, 10b and 10c comprise a small diameter cylindrical part 11 for opening by being projected in the vertical axis Y direction in the upper part center, a male screw 12 formed on the outer periphery of the small diameter cylindrical part 11, a recessed part 13 for caving the bottom part center in the vertical axis Y direction in a size capable of storing the small diameter cylindrical part 11, a female screw 14 formed on an inner peripheral wall of the recessed part 13 so as to threadedly engage with the male screw 12, a shoulder part funnel-shaped surface 17 extending over a maximal outer peripheral part 16 from a base part 15 of the small diameter cylindrical part 11 and a bottom part funnel-shaped surface 18 extending over a maximum outer peripheral part 16B from a neck part 19 of the recessed part 13, and when threadedly engaging and connecting the male screw 12 of the other sealed vessel 10 with and to the female screw 14 of one sealed vessel 10a, an abutting surface 20 between the bottom part funnel-shaped surface 18 of the sealed vessel 10a positioned on the upper side and the shoulder part funnel-shaped surface 17 of a sealed vessel 10b positioned on the lower side, is distributed in a concentric circular shape in the vicinity of the maximum outer peripheral part 16.SELECTED DRAWING: Figure 1 |
