초록 ▼

A container exhibiting superior resistance to unwanted or uncontrolled sidewall deformation has plurality of vacuum responsive panels, generally uniformly spaced around the sidewall periphery, including a panel surface portion radially inset from the sidewall. A post or land is provided between each

A container exhibiting superior resistance to unwanted or uncontrolled sidewall deformation has plurality of vacuum responsive panels, generally uniformly spaced around the sidewall periphery, including a panel surface portion radially inset from the sidewall. A post or land is provided between each nearest neighbor pair of vacuum panels, the posts having upper and lower ends joined together upper and lower sidewall edge portions. A margin is located at least at the upper and lower edges of each vacuum panel and extending between the panel surface and the sidewall. At least one of the upper and lower margins of each vacuum responsive panel includes an axially offset portion, which in response to decreasing pressure focuses any initial deflection of the panel surface to that portion of the panel contiguous to the axial offset portion.

대표청구항 ▼

The invention claimed is: 1. A plastic bottle comprising:a base, a sidewall having a lower edge coupled to the base, the sidewall extending upward from the base to a sidewall upper edge, a shoulder portion coupled to the sidewall upper edge and leading upward and radially inward to a neck portion, a

The invention claimed is: 1. A plastic bottle comprising:a base, a sidewall having a lower edge coupled to the base, the sidewall extending upward from the base to a sidewall upper edge, a shoulder portion coupled to the sidewall upper edge and leading upward and radially inward to a neck portion, a finish coupled to the neck portion adapted to receive a closure, the finish surrounding an opening leading to a plastic bottle interior, the sidewall includinga plurality of vacuum responsive panels uniformly spaced around a sidewall periphery, each vacuum responsive panel including a panel surface radially inset from the sidewall,posts, having upper and lower ends, separating each vacuum responsive panel from nearest neighbor vacuum responsive panels, the upper and lower ends of the posts being joined together by the sidewall upper edge and the sidewall lower edge, anda margin located at least at upper and lower edges of each vacuum responsive panel extending between the panel surface and the sidewall, at least one of the margins located at the upper and lower edges of each vacuum responsive panel including an axially offset intruding portion at a center of one of the upper and lower edges of each vacuum responsive panel, the axially offset intruding portion focusing any initial deflection of the panel surface in response to decreasing pressure within the bottle,the axially offset intruding portion forming a curved surface extending between the panel surface and the adjacent sidewall, the curved surface being perpendicular to the sidewall at the upper or lower edge of the sidewall and becoming substantially coplanar with the panel surface.