Cap for container initially closed by a frangible lid
AssigneeAstra Plastique
InventorsPhilippe Odet, Jean P. Agati
Life of this patent
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Abstract
A cap for covering a container, the opening of which is initially blocked by a sealed lid. The bottom of the cap is provided with a deformable part provided with a perforation means. A deformable part initially occupies a position in which the perforation means is maintained at a distance from the lid. At the moment of first use of the contianer, the deformable part is lowered to a position in which the perforation means penetrates the plane of the lid. The configuration can be used with screw-on caps, particularly with caps having tamperproof bands, or with hinged caps.
Claims12
A cap for a container closed by a frangible lid sealed on the edge of the opening of the container,
- the cap having a bottom having a first portion and a second portion, said first portion comprising a deformable part comprising a relatively rigid plate;
- said deformable part provided with a perforation means directed toward the container;
- said deformable part initially occupies a stable position raised relative to said bottom;
- said perforation means being maintained at a distance from said lid when the cap is in a closed position;
- said perforation means during use of the container being brought to a position wherein the deformable part is sunk lower than the second portion of said bottom, and when the perforation means is lowered, the perforation means penetrates the plane of the lid;
- a thin web forming a hinge fastens an edge of said plate to one edge of a relatively thick inclined wall;
- a thin web forming a hinge fastens a second edge of said wall to the second portion of said bottom;
- wherein said perforation means is formed under said plate which initially is raised relative to the remainder of the bottom and which, after being lowered, is located below the second position of the bottom.
Dependencies are inferred from the claim text.