One way stopper plug for bottles

Details One way stopper plug for bottles One way stopper plug for bottles

1982-05-25

1983-10-25

Norton, Donald F.

Bottles and jars

Nonrefillable

Guard or valve type

215 26, B65D 4902

Patent

active

044113692

ABSTRACT:
A one-way stopper plug for bottles and the like, comprises a one-piece resilient plastic molding consisting of two mating halves joined to each other by an integral living hinge whereby the entire unit can be molded in one operation. Each half has a semi-cylindrical wall and two transverse walls at its ends, said walls having planar edge portions adapted for co-engagement when the halves are folded together, thereby to form a complete cylinder. The living hinge connects two of the transverse walls together. The mating halves define a channel therethrough, and a back-check valve disposed in the assemblage operates to limit fluid flow in only one direction. Forcing the assembled halves into a bottle neck maintains them in their assembled relation.

REFERENCES:
patent: 4043473 (1977-08-01), Webb
patent: 4217988 (1980-08-01), Mills et al.

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