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US 4,969,563 AGranted
Self-stabilizing base for pressurized bottle
AssigneePlasticon Patents, S.A.
InventorHerbert Strassheimer
Life of this patent
Estimating the term…
Abstract
A blow molded, biaxially oriented plastic container with a bottom portion including an axially, inwardly directed generally conical portion, a standing section on which the container rests, a heel portion joining the bottom portion and container body portion, and a hinge portion joining the conical portion and the standing section, wherein the wall thickness of the hinge portion is greater than the wall thickness of the heel portion.
Claims9
A blow molded, biaxially oriented plastic container comprising:
- a neck portion defining an opening;
- a tubular body portion depending therefrom;
- an integral bottom portion depending from the tubular body portion;
- an axially, inwardly directed, generally conical portion of said bottom portion, wherein said bottom portion includes a standing section on which the container rests in the upright condition;
- wherein said bottom portion includes a heel portion joining the standing section and the body portion and a hinge portion joining the conical portion and the standing section;
- said container having means including a hinge portion wall thickness greater than the heel portion wall thickness wherein said heel portion is spaced outward and downward upon pressurizing the container to provide a stable bottom portion and wherein the standing section of said container upon pressurizing is larger than the standing section in the unpressurized container so as to form a stable standing section.
3 more elements
Dependencies are inferred from the claim text.