Patent ID: 6554154
Filing Date: 2003-04-29
Classification: B65D

Abstract:
A container sidewall made of a thermoplastic material, the container comprising a closed bottom wall at one end, an open top area defined at an opposite end, and a sidewall extending between the bottom wall and the open top to define a height, the sidewall comprising:a top portion having a smooth exterior surface adjacent the open top area of the container; a first set of annular ribs having a width and disposed adjacent the top portion; a second set of annular ribs having a width and separate from the first set of annular ribs; a middle portion having a width, a smooth exterior surface and disposed between the first set and second set of annular ribs; a bottom portion having a smooth exterior surface disposed adjacent the closed bottom wall of the container; and an improved sidewall strength to container weight ratio of at least 5% over a substantially similar container sidewall having only a single set of annular ribs, the strength being determined by the force required to deflect the sidewall approximately one inch.