A container including a finish, a shoulder portion, a sidewall, and a base portion. The finish defines an opening. The shoulder portion extends from the finish. The sidewall extends from the shoulder portion and defines a volume of the container. The base portion is at an end of the sidewall opposit
A container including a finish, a shoulder portion, a sidewall, and a base portion. The finish defines an opening. The shoulder portion extends from the finish. The sidewall extends from the shoulder portion and defines a volume of the container. The base portion is at an end of the sidewall opposite to the shoulder portion. The base portion includes a primary standing ring and a secondary standing ring. The base portion is movable from an as-blown position to an expanded position and from the expanded position to a retracted position. In the as-blown and retracted positions the primary standing ring is configured to support the container upright. In the expanded position the secondary standing ring is configured to support the container upright.
대표청구항▼
1. A container comprising: a finish defining an opening;a shoulder portion extending from the finish;a sidewall extending from the shoulder portion and defining a volume of the container; anda base portion at an end of the sidewall opposite to the shoulder portion and including a primary standing ri
1. A container comprising: a finish defining an opening;a shoulder portion extending from the finish;a sidewall extending from the shoulder portion and defining a volume of the container; anda base portion at an end of the sidewall opposite to the shoulder portion and including a primary standing ring and a secondary standing ring, the base portion movable from an as-blown position to an expanded position and from the expanded position to a retracted position;wherein: in the as-blown and retracted positions the primary standing ring is configured to support the container upright; andin the expanded position the secondary standing ring is configured to support the container upright. 2. The container of claim 1, wherein in the as-blown position the secondary standing ring is recessed within the container. 3. The container of claim 1, wherein in the expanded position, the secondary standing ring protrudes outward beyond the primary standing ring and a base end of the container. 4. The container of claim 2, wherein in the retracted position the secondary standing ring is closer to the finish than the primary standing ring is. 5. The container of claim 2, wherein the secondary standing ring is in substantially the same position in both the retracted position and the as-blown position. 6. The container of claim 2, wherein the secondary standing ring is one of closer to or further from the finish in the retracted position than when in the as-blown position. 7. The container of claim 1, wherein the base portion includes a central zone through which a longitudinal axis of the container extends, the central zone has a planar area that is about 18% to about 28% of a total planar area of the base portion. 8. The container of claim 1, wherein the base portion includes a central zone through which a longitudinal axis of the container extends, the central zone has a planar area that is about 23% of a total planar area of the base portion. 9. The container of claim 1, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 2 degrees with respect to a longitudinal axis of the container. 10. The container of claim 1, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 0.5 degrees with respect to a longitudinal axis of the container. 11. The container of claim 1, wherein the secondary standing ring is between the primary standing ring and a central zone of the base portion. 12. The container of claim 11, wherein a longitudinal axis of the container extends through the central zone, the central zone configured to move along the longitudinal axis as the base portion moves from the as-blown position to the expanded position, and from the expanded position to the retracted position. 13. The container of claim 12, wherein the central zone is configured to not flex as the base portion moves from the as-blown position to the expanded position, and from the expanded position to the retracted position. 14. The container of claim 12, wherein the secondary standing ring is configured to flex as the base portion moves from the as-blown position to the expanded position, and from the expanded position to the retracted position. 15. The container of claim 12, wherein the container is a hot fill container; wherein the base portion is configured to move from the as-blown position to the expanded position when the container is subject to increased temperature and increased pressure during hot fill; andwherein the base portion is configured to move from the expanded position to the retracted position as the hot fill contents cool and internal vacuum pressure increases. 16. The container of claim 1, wherein the sidewall is without a vacuum panel. 17. The container of claim 1, wherein the base portion defines a receptacle configured to receive therein a closure of a similar container to facilitate container stacking. 18. The container of claim 1, wherein a closure of the container includes a vacuum indicator. 19. A container comprising: a finish defining an opening;a shoulder portion extending from the finish;a sidewall extending from the shoulder portion and defining a volume of the container; anda base portion at an end of the sidewall opposite to the shoulder portion, the base portion movable from an as-blown position to an expanded position, and from the expanded position to a retracted position, the base portion including: a primary standing ring, a central zone, and a secondary standing ring between the primary standing ring and the central zone;wherein: the central zone is configured to move along a longitudinal axis of the container without flexing as the base portion moves from the as-blown position to the expanded position, and from the expanded position to the retracted position;in the as-blown and the retracted positions the primary standing ring is configured to support the container upright; andin the expanded position the secondary standing ring extends out from within the container and beyond the primary standing ring in order to support the container upright. 20. The container of claim 19, wherein the central zone includes a side surface that remains equidistant from the longitudinal axis as the central zone moves along the longitudinal axis. 21. The container of claim 19, wherein in the retracted position the secondary standing ring is recessed further within the container than when in the as-blown position. 22. The container of claim 19, wherein the sidewall is without a vacuum panel. 23. The container of claim 19, wherein the container is a hot fill container; wherein the base portion is configured to move from the as-blown position to the expanded position when the container is subject to increased temperature and increased pressure during hot fill; andwherein the base portion is configured to move from the expanded position to the retracted position as the hot fill contents cool and internal vacuum pressure increases. 24. The container of claim 19, wherein the central zone has a planar area that is about 18% to about 28% of a total planar area of the base portion. 25. The container of claim 19, wherein the central zone has a planar area that is about 23% of a total planar area of the base portion. 26. The container of claim 19, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 2 degrees with respect to the longitudinal axis of the container. 27. The container of claim 19, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 0.5 degrees with respect to the longitudinal axis of the container. 28. A container comprising: a finish defining an opening;a shoulder portion extending from the finish;a sidewall extending from the shoulder portion and defining a volume of the container; anda base portion at an end of the sidewall opposite to the shoulder portion, the base portion movable from an as-blown position to an expanded position, and from the expanded position to a retracted position, the base portion including: a primary standing ring, a central zone, and a secondary standing ring between the primary standing ring and the central zone;a closure configured to couple with the finish to seal the container closed, the closure including a vacuum seal indicator;wherein: the central zone is configured to move along a longitudinal axis of the container as the base portion moves from the as-blown position to the expanded position, and from the expanded position to the retracted position;in the as-blown and the retracted positions the primary standing ring is configured to support the container upright; andin the expanded position the secondary standing ring extends out from within the container and beyond the primary standing ring in order to support the container upright. 29. The container of claim 28, wherein the central zone is configured to move along the longitudinal axis of the container without flexing. 30. The container of claim 28, wherein the sidewall is entirely smooth and without a vacuum panel. 31. The container of claim 28, wherein the central zone has a planar area that is about 18% to about 28% of a total planar area of the base portion. 32. The container of claim 28, wherein the central zone has a planar area that is about 23% of a total planar area of the base portion. 33. The container of claim 28, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 2 degrees with respect to the longitudinal axis of the container. 34. The container of claim 28, wherein as the container transitions from the as-blown position to the expanded position and to the retracted position, the base portion tilts less than about 0.5 degrees with respect to the longitudinal axis of the container.
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이 특허에 인용된 특허 (4)
Melrose, David Murray, Container structure for removal of vacuum pressure.
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