| 摘要 |
1,219,382. Heat insulated containers. ILLINOIS TOOL WORKS Inc. 8 Jan., 1969 [9 Jan., 1968], No. 1128/69. Heading F4U. [Also in Division A4] The inner and outer side walls 34 and 40 of a double walled cup include respectively outwardly projecting, 36, and inwardly projecting, 42, ribs, extending generally helically down the container and abutting each other at a plurality of places 46 around the container 10. The ribs 36 and 42 have a substantially V-shaped transverse cross-section and are transversely narrower than the wall sections 44 separating them. Nested cups are prevented from binding by the provision of a downwardly facing corner portion 30 of the outer bottom wall 26 and a radial annular shoulder 32 in the inner side wall 34.
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