Valve and containers incorporating the same
First Claim
1. A valve comprising a conduit, formed by bonding a first sheet of flexible material to a second sheet of resilient material, one of the sheets being provided with a discrete shoulder extending towards the other sheet, the conduit being closed by reason of the shoulder and the other sheet being normally maintained in close intimate contact, and means to separate the shoulder and the other sheet under resilient deforming pressure whereby to open the conduit, the means to separate maintaining the shoulder and the other sheet apart under resilient deforming pressure while the conduit is open.
1 Assignment
0 Petitions
Accused Products
Abstract
A valve for use primarily for dispensing liquids from non-reusable containers comprising a conduit formed by bonding a flexible sheet of thermoplastic material to a second sheet of resilient thermoplastics material. The second sheet is of a springy nature and is provided with a shoulder portion directed to the first sheet. The shoulder portion positioned adjacent to a deformable member formed into the second sheet. The conduit is closed by the first sheet being stretched tightly over the shoulder. However by deforming the deformable member towards the first sheet the latter is raised from the shoulder thereby opening the conduit.
55 Citations
16 Claims
- 1. A valve comprising a conduit, formed by bonding a first sheet of flexible material to a second sheet of resilient material, one of the sheets being provided with a discrete shoulder extending towards the other sheet, the conduit being closed by reason of the shoulder and the other sheet being normally maintained in close intimate contact, and means to separate the shoulder and the other sheet under resilient deforming pressure whereby to open the conduit, the means to separate maintaining the shoulder and the other sheet apart under resilient deforming pressure while the conduit is open.
- 14. A valve comprising a conduit, formed by bonding a first sheet of flexible material to a second sheet of resilient material, the second sheet being provided with a shoulder extending towards the first sheet, the conduit being closed by the shoulder and the other sheet being in close intimate contact, and the second sheet being provided with means to separate the shoulder and the first sheet and thereby to open the conduit, the means to separate being a deformable member formed into the second sheet and bonded to the first sheet.
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16. A valve comprising a conduit, formed by bonding a first sheet of flexible material to a second sheet of resilient material, one of the sheets being provided with a discrete shoulder extending towards the other sheet, and such other sheet being under prestressed stretching tension, the conduit being closed by reason of the shoulder and the other sheet being normally maintained in close intimate contact, and means to separate the shoulder and the other sheet whereby to open the conduit, the means to separate being disposed on one to the sheets adjacent to but laterally spaced from the shoulder, and the means to separate being arranged for moving portions of both sheets in the same direction transversely of and away from the shoulder to open the conduit.
Specification