Patent ID: 8777046

Claim:
A drink cup comprises a body formed to include an interior region providing a fluid-holding reservoir and a rolled brim coupled to the body to frame an opening into the interior region, wherein the rolled brim includes an annular lip coupled to an upper portion of the body and arranged to lie outside of the interior region and surround the upper portion of the body to define a downwardly opening ridge-receiving chamber therebetween and an annular ridge coupled to an inner lip wall of the annular lip and arranged to lie in the downwardly opening ridge-receiving chamber to provide pivot means for establishing a pivot about which the annular lip is rolled during exposure of the annular lip to a progressive die as a container comprising the body, annular lip, and annular ridge is run through the progressive die to produce the drink cup so that an outer lip wall that is included in the annular lip and that is arranged to face outwardly away from the inner lip wall of the annular lip has a round shape wherein the annular lip terminates at a distal end and includes a first segment coupled to the upper portion of the body, a third segment configured to include the distal end, and a second segment arranged to interconnect the first and third segments and coupled to the annular ridge, and the annular ridge is arranged to extend away from the inner lip wall of the annular lip and into the ridge-receiving chamber in a direction toward the upper portion of the body.