One way stopper plug for bottles
OwnerAllan A. Borowsinventor
Life of this patent
Estimating the term…
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.
Claims9
A one-way stopper plug for bottles and the like, to permit pouring out of the liquid content of a bottle while preventing refilling of the bottle, comprising in combination:
- (a) a one-piece, resilient plastic molding comprising mating halves joined to each other by an integral living hinge,
- (b) each half being constituted of a semi-cylindrical wall having at its ends two transverse walls, all walls being integral,
- (c) said semi-cylindrical wall and transverse walls of each said one half having planar edge portions lying in a flat plane and being adapted for engagement with corresponding edge portions of the other half, thereby to form a complete cylinder,
- (d) said living hinge connecting together the planar edge portions of two of the said integral walls, one from each of said halves,
- (e) said mating halves providing a channel therethrough when they form a complete cylinder, and
- (f) back-check valve means including portions of said halves, operable to limit flow of liquid through said channel in one direction.
Dependencies are inferred from the claim text.