Bottles and jars – End wall structure – One-piece side and end wall
Patent
1998-09-22
2000-07-11
Weaver, Sue A.
Bottles and jars
End wall structure
One-piece side and end wall
215373, 215377, 220606, B65D 102, B65D 2300
Patent
active
060859245
ABSTRACT:
A blow molded plastic container for carbonated beverages includes an upper mouth-forming portion, a cylindrical sidewall portion and a lower base-forming portion, all of the portions being generally symmetrically situated about a central longitudinal axis. The lower base-forming portion includes a central portion contiguously surrounding the central longitudinal axis and a plurality of circumferentially-spaced, downwardly convex rib segments, each rib segment extending upwardly from the central portion following a hyperbolic profile and expanding circumferentially outwardly to merge with the sidewall. The lower base-forming portion additionally has a plurality of intervening and circumferentially-spaced, convex, hollow foot-forming portions extending downwardly from the circumferentially-spaced, rib segments. Each of the foot-forming portions has a bottom clearance-forming portion adjacent the central portion and a lower outer portion defined by the rotation of a heel radius greater than 0.8 cm about a central point of each foot situated on a contact radius. The rotation of the heel radius is along a mirrored hyperbolic profile having a coefficient of curvature of between about 0.65 and 0.80 so that the bottom of the foot exhibits essentially no incidence of creases and folds common in prior art containers.
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Disclosed anonymously, Research Disclosure, Five Footed Bottle, Mar. 1980, Disclosure No. 19122, pp. 113-114 (translation attached).
Ball Corporation
Weaver Sue A.
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