| 摘要 |
PROBLEM TO BE SOLVED: To provide packing means capable of preventing a liquid leakage from an air flow passage but not deteriorating gas permeability in a liquid jet device for upright and inverted positions.SOLUTION: A cylinder peripheral wall 2 having formed with a first check valve Vin a lower portion is made to depend from the inner peripheral part of an outer flange 4 to be retained on the upper face of the neck of a container body, and an extension cylinder part 3 is raised from the upper end of the cylinder peripheral wall 2. Moreover, a flanged top wall part 24 is protruded from the upper end of a fitting cylinder part 22 to be fitted on the outer face of the neck. A holding cylinder part 26 is raised upward of the extension cylinder part 3 from the inner circumference of the flanged top wall part 24. On the inner face of the holding cylinder part 26, there is circumferentially formed a downward annular step part 28 which is positioned above the upper end of the extension cylinder part 3. An annular elastic packing G is clamped at its outer periphery 84 between those extension cylinder part 3 and annular step part 28, and is made at its inner periphery 86 to abut liquid-tight against the outer peripheral surface of a stem F. |
