Lightweight container base
AssigneeAmcor Limited
InventorsMichael T. Lane, Walt Paegel
Life of this patent
Estimating the term…
Abstract
A container defining a longitudinal axis and a transverse direction that is transverse with respect to the longitudinal axis. The container includes a finish and a sidewall portion extending from the finish. A base portion extends from the sidewall portion and encloses the sidewall portion to form a volume therein for retaining a commodity. The base portion has a contact surface for supporting the container. A plurality of straps extend radially along the base portion away from the longitudinal axis in the transverse direction, each one of the straps defines a strap surface that is closer to the finish than the contact surface.
Claims40
A container defining a longitudinal axis and a transverse direction that is transverse with respect to the longitudinal axis, the container comprising:
- a finish;
- a sidewall portion extending from the finish;
- a base portion extending from the sidewall portion and enclosing the sidewall portion to form a volume therein for retaining a commodity, the base portion having a contact surface for supporting the container;
- a plurality of straps extending radially along the base portion away from the longitudinal axis in the transverse direction, each one of the straps defining a strap surface that is closer to the finish than the contact surface is;
- and
- a plurality of rib members at the base portion, at least one of the plurality of rib members is arranged between two of the plurality of straps along a common radius of curvature, a center of which is at the longitudinal axis.
A container defining a longitudinal axis and a transverse direction that is transverse with respect to the longitudinal axis, the container comprising:
- a finish;
- a sidewall portion extending from the finish;
- a base portion extending from the sidewall portion and enclosing the sidewall portion to form a volume therein for retaining a commodity, the base portion having a contact surface for supporting the container;
- a plurality of straps extending radially along the base portion away from the longitudinal axis in the transverse direction, each one of the straps defining a strap surface that is closer to the finish than the contact surface is;
- a plurality of rib members recessed within the base portion, each one of the plurality of rib members is between two of the plurality of straps;
- a central pushup portion at an axial center of the base portion, the longitudinal axis extends through the central pushup portion;
- an outward strap radius defined by the base portion;
- an inward foot radius defined by the base portion;
- wherein the outward strap radius decreases and the inward foot radius increases when the container is subject to displacement;
- and
- wherein the inward foot radius increases about two times more than the outward strap radius decreases at about 3% volume displacement.
A container defining a longitudinal axis and a transverse direction that is transverse with respect to the longitudinal axis, the container comprising:
- a finish;
- a sidewall portion extending from the finish;
- a base portion extending from the sidewall portion and enclosing the sidewall portion to form a volume therein for retaining a commodity, the base portion having a contact surface for supporting the container;
- a plurality of straps extending radially along the base portion away from the longitudinal axis in the transverse direction, each one of the straps defining a strap surface that is closer to the finish than the contact surface is;
- a plurality of rib members recessed within the base portion, each one of the plurality of rib members is between two of the plurality of straps;
- a central pushup portion at an axial center of the base portion, the longitudinal axis extends through the central pushup portion;
- an outward strap radius defined by the base portion;
- and
- an inward foot radius defined by the base portion;
- wherein the outward strap radius decreases and the inward foot radius increases when the container is subject to displacement, the inward foot radius increases about 1.2 times to about 3.3 times more than the outward strap radius decreases;
- and
- wherein each one of the plurality of straps is at least partially aligned with one of the rib members in the transverse direction on opposite sides of the longitudinal axis.
A container defining a longitudinal axis and a transverse direction that is transverse with respect to the longitudinal axis, the container comprising:
- a finish;
- a sidewall portion extending from the finish;
- a base portion extending from the sidewall portion and enclosing the sidewall portion to form a volume therein for retaining a commodity, the base portion having a contact surface for supporting the container;
- a plurality of straps extending radially along the base portion away from the longitudinal axis in the transverse direction, each one of the straps defining a strap surface that is closer to the finish than the contact surface is;
- a plurality of rib members recessed within the base portion, each one of the plurality of rib members is between two of the plurality of straps;
- a central pushup portion at an axial center of the base portion, the longitudinal axis extends through the central pushup portion;
- an outward strap radius defined by the base portion;
- and
- an inward foot radius defined by the base portion;
- wherein the outward strap radius decreases and the inward foot radius increases when the container is subject to displacement;
- and
- wherein the outward strap radius decreases about 10% and the inward foot radius increases about 20% at 3% volume displacement.
Dependencies are inferred from the claim text.