Patent ID: 6276546
Filing Date: 2001-08-21
Classification: B65D

Abstract:
A blow molded plastic container for carbonated beverages, comprising an upper mouth-forming portion, a cylindrical sidewall portion and a lower base-forming portion, all about a central longitudinal axis,said lower base-forming portion comprising a plurality of hollow foot-forming portions extending outwardly from the central portion of the lower base-forming portion to form a plurality of feet lying substantially on a contact diameter, each foot-forming portion including between said central portion of the base-forming portion and its foot, a bottom clearance-forming portion including a compound-curved offset of a substantial fraction of an inch formed by opposing radii of curvature, said compound-curved offset curving downwardly from said central portion about a radius of curvature below the bottom of the base-forming portion before curving about a radius of curvature above the bottom of the base-forming portion, and further comprising a plurality of downwardly convex segments between adjacent pairs of hollow foot-forming portions, each of said downwardly convex segments extending upwardly between said adjacent hollow foot-forming portions, the downwardly convex segments having cross-sections, in a radially extending plane in its central portion coplanar with the longitudinal axis of the container, with a coefficient of curvature of from about 0.68 to about 0.75, and flaring outwardly to merge into said cylindrical sidewall portion at its upper end.