US 11,718,439 B2
Container pressure base
Mark Woloszyk, Chelsea, MI (US); and Walter J. Strasser, Cement City, MI (US)
Assigned to AMCOR RIGID PACKAGING USA, LLC, Ann Arbor, MI (US)
Appl. No. 17/52,565
Filed by AMCOR RIGID PACKAGING USA, LLC, Ann Arbor, MI (US)
PCT Filed May 11, 2018, PCT No. PCT/US2018/032192
§ 371(c)(1), (2) Date Nov. 3, 2020,
PCT Pub. No. WO2019/216905, PCT Pub. Date Nov. 14, 2019.
Prior Publication US 2021/0362903 A1, Nov. 25, 2021
Int. Cl. B65D 1/02 (2006.01)
CPC B65D 1/0276 (2013.01) 14 Claims
OG exemplary drawing
 
1. A polymeric container formed from a preform and configured for storing a commodity under pressure, the polymeric container comprising:
a base including a standing ring configured to support the container upright when the standing ring is seated on a planar standing surface;
a curved diaphragm of the base extending from the standing ring to a center of the base; and
a plurality of dimples defined by the base and evenly spaced apart along the standing ring:
wherein:
the plurality of dimples includes first dimples and second dimples;
the first dimples have a smaller surface area than the second dimples;
the first dimples are shorter than the second dimples;
each one of the first dimples is between two of the second dimples and each one of the second dimples is between two of the first dimples;
the first dimples extend from the standing surface to along the curved diaphragm of the container, the first dimples intersect the heel along a first longitudinal axis at an angle of less than 90°, the first longitudinal axis extends along a center of a length of each of the first dimples, the first dimples extend linearly and are flat in cross-section along the first longitudinal axis, and the first dimples are symmetrical on opposite sides of the first longitudinal axis;
the second dimples extend from the standing surface to along the heel of the base, the second dimples intersect the curved diaphragm along a second longitudinal axis at an angle of less than 90°, the second longitudinal axis extends along a center of a length of each of the second dimples, the second dimples extend linearly and are flat in cross-section along the second longitudinal axis, and the second dimples are symmetrical on opposite sides of second longitudinal axis;
the first dimples extend further along the curved diaphragm than the second dimples, and the second dimples extend further along the heel than the first dimples;
each one of the first dimples is opposite to another one of the first dimples on opposite sides of the center of the base; and
each one of the second dimples is opposite to another one of the second dimples on opposite sides of the center of the base.