초록 ▼

A beverage container with increased strength includes a generally cylindrical sidewall that is disposed around a vertical axis, and a bottom. The bottom provides a supporting surface and includes a bottom recess portion that is disposed radially inwardly of the supporting surface. The bottom recess

A beverage container with increased strength includes a generally cylindrical sidewall that is disposed around a vertical axis, and a bottom. The bottom provides a supporting surface and includes a bottom recess portion that is disposed radially inwardly of the supporting surface. The bottom recess portion includes a concave domed panel that is disposed a positional distance above the supporting surface by a dome positioning portion of the bottom recess portion. The domed panel includes a portion thereof with a curvature in the range wherein increases in the curvature decrease the static dome reversal pressure; and the dome positioning, portion includes first and second parts thereof that are disposed at different radial distances from the vertical axis and that provide increases in both roll-out resistance and static dome reversal pressure. In various embodiments the first and second parts circumferential, arcuate, or longitudinal; and, in at least some embodiments, an increase in cumulative drop height is achieved as well as increases in both roll-out resistance and static dome reversal pressure.

대표청구항 ▼

[ What is claimed is:] [1.] A drawn and ironed container, comprising:a substantially cylindrical sidewall disposed about a vertical axis; anda bottom attached to said sidewall and comprising:an exteriorly convexly-shaped annular support comprising an annular supporting surface, wherein a radially in

[ What is claimed is:] [1.] A drawn and ironed container, comprising:a substantially cylindrical sidewall disposed about a vertical axis; anda bottom attached to said sidewall and comprising:an exteriorly convexly-shaped annular support comprising an annular supporting surface, wherein a radially innermost annular part of said annular support defines a first diameter;a center panel; anda panel positioning portion positioned between said supporting surface and said center panel and comprising annular second and third parts, said second part being positioned above said annular support and generally extending outwardly relative to said vertical axis from a lower end of said second part to an upper end of said second part, said third part being positioned above said second part and generally extending inwardly relative to said vertical axis from a lower end of said third part to an upper end of said third part, said lower end of said third part having a second diameter greater than said first diameter of said radially innermost part of said annular support and said upper end of said third part having a third diameter less than said first diameter of said radially innermost part of said annular support, wherein there is a discontinuity between said upper end of said third part and said center panel.