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US 3,941,270 AGranted
Removable seal for liquid containers
AssigneeAllied Chemical Corporation
InventorBurton A. Spielman
Life of this patent
Estimating the term…
Abstract
A removable seal for a liquid container comprising a flexible liquid impervious sealing member for sealing an end of the container which sealing member is held against the end by a screw closure having a perforate top wall so that application of pressure upon the sealing member through the top wall disengages the sealing member.
Claims7
A removable seal for liquid containers comprising:
- a cylindrical member having first and second open ends, an internal hollow portion and an external male thread proximate the first end thereof;
- a screw closure comprising a top wall and a continuous side wall, said side wall being attached to and extending from the edges of said top wall, said side wall being internally provided with a female thread for engagement with the male thread of said cylindrical hollow member said top wall having a perforate portion permitting communication through the top wall;
- a flexible liquid impervious sealing member for engagement with and for sealing the first end of the cylindrical hollow member, said flexible member being held against said first end by the top wall of the screw closure, permitting disengagement of the sealing member from the first end of the cylindrical hollow member by application of pressure upon the sealing member through the perforate portion of the top wall.
Dependencies are inferred from the claim text.