Patent ID: 11912459
Assignee: CO2PAC LIMITED
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A blow-molded container adapted for filling with a heated liquid, the container including a central longitudinal axis and comprising:
a sidewall having a plurality of vertically displaced annular ribs; and
a base, the base comprising:
a support surface defining a horizontal reference plane;
an inner support wall extending upwardly from the support surface;
a first radiused portion extending radially inward toward the central longitudinal axis from the inner support wall and concave relative to the reference plane;
a second radiused portion extending radially inward toward the longitudinal axis from the first radiused portion and convex relative to the reference plane;
an intermediate surface extending radially inward toward the longitudinal axis from the second radiused portion, wherein the intermediate surface comprises an intermediate radiused portion concave relative to the reference plane and a linear portion extending radially from the second radiused portion to the intermediate radiused portion;
a third radiused portion extending radially inward toward the longitudinal axis from the intermediate surface and convex relative to the reference plane;
a transition portion extending radially inward toward the longitudinal axis from the third radiused portion and being concave relative to the reference plane; and
a central portion disposed proximate the transition portion, the central portion including an inner core having a core sidewall and a top surface extending from the core sidewall, the top surface having a convex portion relative the reference plane.