Plastic container for carbonated beverages

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 1/02 (2006.01) B65D 23/00 (2006.01)

Patent

CA 2219135

A plastic container comprises a base forming portion that includes a plurality of circumferentially spaced, generally spherical shaped segments (26) and a plurality of intervening, circumferentially spaced, totally convex hollow foot forming portions (21) that extend radially from a central bottom portion (29) and downwardly from the spherically shaped segments (26) to form a clearance for the central bottom portion. The clearance forming portion of each foot forming portion includes a compound curved offset (23b) formed with opposing radii of curvature (30, 31). The compound curved offset curves downwardly and outwardly about a center of curvature below the bottom forming portion before curving about a center of curvature above the bottom forming portion. Each clearance forming portion further includes a spherical surface (23a) extending from the central bottom portion and merging into the compound curved offset (23b) and a lowermost substantially planar portion (23c) extending from the compound curved offset to form one of the feet.

Ce contenant en plastique comprend une partie base comportant une pluralité de segments (26), généralement de forme sphérique, espacés de manière circonférentielle, ainsi qu'une pluralité de portions (21) intermédiaires, espacées de manière circonférentielle, formant des points d'appui creux et totalement convexes, et s'étendant radialement à partir d'une portion (29) centrale inférieure et vers le bas à partir des segments (26) sphériques, afin de former un évidement destiné à la portion centrale inférieure. La portion d'évidement formée par chaque point d'appui présente une section saillante (23b) courbe composée, formée à l'aide de rayons de courbure (30, 31) opposés. Cette section saillante se courbe vers le bas et vers l'extérieur autour d'un centre de courbure situé sous la portion formant le fond, avant de se courber autour d'un centre de courbure situé au-dessus de celle-ci. Chaque portion formant un évidement comprend en outre une surface (23a) sphérique s'étendant à partir de la portion centrale inférieure et fusionnant avec la section saillante (23b) courbe composée, ainsi qu'une portion (23c) sensiblement plane, située au niveau le plus bas et s'étendant à partir de la section saillante courbe composée afin de former un des points d'appui.

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