Dispensing container

Details Dispensing container Dispensing container

2006-09-12

2006-09-12

Shaver, Kevin (Department: 3754)

Dispensing

Resilient wall

Fluid pressure generating pump or pulsator and/or removable...

C222S094000, C222S105000, C222S213000, C222S386500, C222S491000

Reexamination Certificate

active

07104426

ABSTRACT:
The first and second check valve mechanisms, which are applicable to a small-size double-layered container, are created while maintaining high productivity. The discharge container provided with these check valve mechanisms comprises an outer container, which has the flexibility to make this outer container squeezable and recoverable to its original shape and which is provided with a cylindrical outer neck on top thereof. This discharge container also comprises an inner container, which is deformable with the decrease in the content and is disposed inside the outer container under the condition that cylindrical inner neck has been directly engaged with, and tightly fitted to, the outer neck. The first check valve mechanism is engaged with, and tightly fitted to, the inside of the inner neck and is used to open or close the opening of the inner neck while preventing outside air from creeping in the inner container. The second check valve mechanism is engaged with, and tightly fitted to, either one of the outer neck or the inner neck, with the lower end of this mechanism being in tight contact circumferentially with the other one of the outer neck or the inner neck, and is used to open or close airflow paths, which extends from the upper air intakes near the outer neck in a manner that allows outside air to enter the void between the outer and inner containers but does not allow air in the void to escape outside. There is thus provided a highly sanitary discharge container having high productivity and affording no entry of outside air into the inner container.

REFERENCES:
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patent: A 6-14972 (1994-01-01), None
patent: A 7-22951 (1995-01-01), None
patent: U 7-4351 (1995-01-01), None
patent: A 8-164954 (1996-06-01), None

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