Back to results
US 4,072,233 AGranted
Container with frangible piercing point
AssigneeHoechst Aktiengesellschaft
InventorsKarl Kramer, Karlheinz Durst
Life of this patent
Estimating the term…
Abstract
A container includes a plurality of walls that define an enclosed space. One of the container walls has a frangible piercing point thereon adapted to be penetrated by an extraction device such as a drinking straw, the piercing point being defined by a depression formed in the exterior surface of the container wall, but which does not penetrate completely through the wall. The depression is surrounded by an annular ring, which marks its location, and the container walls are preferably made of a plurality of layers of laminated material.
Claims9
A container comprising:
- a plurality of container walls made of laminated layers of material and defining a closed interior space, one of said walls having a frangible piercing point thereon arranged to be penetrated by an extraction device or the like, said piercing point being defined by a circumscribing depression formed in the exterior of said wall, and which extends from the outside of said wall toward the inside thereof, but which does not completely pierce the innermost laminate layer of said wall, substantially the entire portion of said wall circumscribed by said depression remaining in place at substantially full thickness until said piercing point is penetrated by said extraction device or the like.
Dependencies are inferred from the claim text.