Patent ID: 8528760

Claim:
A one-piece plastic container comprising: a body defining a generally rectangular horizontal cross section including a first pair of opposing sidewalls and a second pair of opposing sidewalls, said body having an upper portion, a shoulder region, a sidewall portion and a base, said shoulder region integrally formed with and extending from said upper portion to said sidewall portion, said base closing off an end of said container, said shoulder region defining a grip panel area at said second pair of opposing sidewalls and a pair of grip portions defined in part by a respective pair of pillars, wherein each pillar of said pair of pillars defines oppositely facing walls that are offset inboard relative to the respective second pair of opposing sidewalls and arched inset walls, each of the arched inset walls having a respective longitudinal length, each of the arched inset walls arching concavely along the entire respective longitudinal length, wherein said oppositely facing walls and said arched inset walls act as a hinge such that said grip panel area is movable to accommodate vacuum forces generated within the container.