초록 ▼

A lid for a plastic food container includes a continuous body portion and a continuous rim encompassing and projecting laterally outwardly from the body portion. The body portion includes a peripheral region, a transition region, and a central region. The peripheral region encompasses the transition

A lid for a plastic food container includes a continuous body portion and a continuous rim encompassing and projecting laterally outwardly from the body portion. The body portion includes a peripheral region, a transition region, and a central region. The peripheral region encompasses the transition region and the central region, extends between the continuous rim and the transition region, and slopes downward at a first acute angle from the continuous rim to the transition region. The transition region encompasses the central region, extends between the peripheral region and the central region, and includes first and second transition portions. The first transition portion intersects the peripheral region and slopes upward at a second acute angle from the peripheral region to the second transition portion. The second transition portion intersects the central region and slopes upward at a third acute angle from the first transition portion to the central region. The second acute angle is greater than the third acute angle. The transition region includes a plurality of spaced gussets interrupting the first and second transition portions.

대표청구항 ▼

[ What is claimed is:] [1.] A lid for a plastic food container, comprising:a continuous body portion; anda continuation rim encompassing and projecting laterally outwardly from said body portion;said body portion including a peripheral region, a transition region, and a central region, said peripher

[ What is claimed is:] [1.] A lid for a plastic food container, comprising:a continuous body portion; anda continuation rim encompassing and projecting laterally outwardly from said body portion;said body portion including a peripheral region, a transition region, and a central region, said peripheral region encompassing said transition region and said central region, said peripheral region extending between said continuous rim and said transition region, said peripheral region sloping downward at a first acute angle from said continuous rim toward said transition region, said transition region encompassing said central region, said transition region extending between said peripheral region and said central region, said transition region including first and second transition portions, said first transition portion intersecting said peripheral region and sloping upward at a second acute angle from said peripheral region to said second transition portion, said second transition portion intersecting said central region and said first transition portion, said second transition portion sloping upward at third acute angle from said first transition portion to said central region, said first transition portion further having a length in cross-section equal to or greater than a length in cross-section of said second transition portion, said second acute angle being greater than said third acute angle.