Invention Grant
US3905507A Profiled bottom wall for containers 失效
容器型材底壁

Profiled bottom wall for containers
Abstract:
A profiled bottom wall for a drawn and ironed container having a cylindrical side wall and integral bottom wall is disclosed herein. The bottom wall and side wall merge with each other along an annular outwardly directed bead and the bottom wall has an annular inwardly directed bead located within the outwardly directed bead. The adjacent ends of the two beads are interconnected by an arcuate portion that produces a convex surface within the container and the portion of the container bottom wall within the inwardly directed bead is generally flat and merges with the adjacent end of the inwardly directed bead along a further arcuate portion that defines a concave surface within the container.
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