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US 5,667,135 AGranted
Thermal insulating sleeve for drink cups
AssigneeSweetheart Cup Company Inc.
InventorRobert J. Schaefer
Life of this patent
Estimating the term…
Abstract
A "honeycombed" insulative sleeve is positionable around a portion of a beverage cup side wall. The sleeve is made from a preform which includes a plurality of circumferentially spaced-apart rows of generally longitudinally oriented and off-set slits. The slits thereby allow the sleeve to expand circumferentially when portioned on a portion of the beverage cup side wall and, by virtue of such circumferential expansion, thereby form the insulative honeycomb structure therearound.
Claims5
A beverage cup comprising:
- a generally frustro-conically shaped side wall, and
- a paper sleeve in surrounding contact with a circumferential portion of said side wall,
- said sleeve being a honeycomb structure which includes a plurality of openings established by respective substantially planar side sections and interconnecting planar bridge sections, wherein
- said side sections are oriented in generally vertical planes which angularly intercept a tangent plane to the beverage cup side wall and define an inner edge which bears against the beverage cup side wall, and an outer edge which is radially spaced from the beverage cup side wall, and wherein
- said bridge sections respectively connect said side sections to one another and are oriented in a skewed relationship between vertical and horizontal.
2 more elements
Dependencies are inferred from the claim text.