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US 2004/0000533 A1Published application
Pressurizable container
OwnerSatya Kamineni, Michael R. Mooneyinventors
Life of this patent
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Abstract
A container base that is capable of receiving positive internal pressure, such as that created by introducing liquefied gas during a hot filling process, includes either ribs that substantially connect to a standing ring or a draft surface formed on the bottom of the ribs, or a combination of such features.
Claims55
A heat-set, pressurizable container suitable for filling at an elevated temperature, said container comprising:
- a body;
- an upper portion extending upwardly from the body and including a finish and an opening therein;
- an enclosed base disposed below the body, said base including:
- a standing ring on which the container rests;
- a recess that extends inwardly and upwardly relative to the standing ring;
- and
- plural ribs extending substantially inwardly from the recess, each one of the plural ribs including a lower portion that includes a draft surface extending inwardly and upwardly from the standing ring;
- whereby (i) the draft surface deforms substantially downwardly in response to internal pressurization of the container, (ii) the container rests on the standing ring even after internal pressurization of the container, and (iii) the ribs resist eversion of the recessed base surface such that the container is capable of withstanding internal positive pressure.
5 more elements
A heat-set, pressurizable container suitable for filling at an elevated temperature, said container comprising:
- a body;
- an upper portion extending upwardly from the body and including a finish and an opening therein;
- an enclosed base disposed below the body, said base including:
- a standing ring on which the container rests;
- a recess that extends inwardly and upwardly relative to the standing ring;
- and
- plural ribs extending substantially inwardly from the recess, each one of the plural ribs including a lower portion that includes a draft surface extending inwardly and upwardly from the standing ring, the draft surface being directly coupled to the standing ring and forming a draft angle of between approximately 0 degrees and approximately 45 degrees, the draft surface is directly coupled to the standing ring proximate a draft surface outer point and is directly coupled to the rib face proximate a draft surface inner point, whereby the draft surface couples the standing ring and the rib face together.
4 more elements
A method of filling a container with a flowable product, said method comprising:
- providing a container comprising a body and a base, the base including:
- a standing ring on which the container rests;
- a recess that extends inwardly and upwardly relative to the standing ring;
- and
- plural ribs extending substantially inwardly from the recess, each one of the plural ribs including a lower portion that includes a draft surface extending inwardly and upwardly from the standing ring;
- introducing hot contents and liquefied gas into the container;
- sealing the container before all of the liquefied gas vaporizes to create a positive internal pressure within the container;
- whereby the draft surface deforms substantially downwardly in response to internal pressurization of the container, the container rests on the standing ring even after internal pressurization of the container, and the ribs resist eversion of the recessed base surface such that the container is capable of withstanding internal positive pressure.
5 more elements
Dependencies are inferred from the claim text.