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US 4,284,205 AGranted
Foldable cup
AssigneeTokai Metals Co., Ltd.
InventorIsao Hirata
Life of this patent
Estimating the term…
Abstract
A foldable cup comprises a hollow cylindrical outer shell and a pouch inserted in said outer shell and secured thereto. The outer shell is provided, between its upper and bottom edges, with a plurality of substantially vertical folding lines including two vertical folding lines parallel with each other. By folding outwardly the assembly of the outer shell and the pouch along the two parallel folding lines, the assembly can be folded into a generally flat configuration, whereas by folding the assembly forwardly along all of the folding lines, the assembly can be expanded into a cubic configuration.
Claims6
A foldable cup, comprising:
- a hollow outer shell formed by folding a rectangular plate-like sheet upon itself and by bonding the two side edges thereof together, and a pouch inserted in said outer shell and secured thereto, said outer shell being provided with a plurality of substantially vertical folding lines parallel with two side edges of the outer shell, and further provided with at least one pair of substantially horizontal parallel cuts crossing one of said vertical folding lines and with a pair of substantially vertical lines connecting the respective ends of these cuts for defining at least one stopper which, upon expanding the foldable cup, may be folded inwardly along said vertical folding line for enhancing the holdability of a cup shape and the self-standing ability of the outer shell.
Dependencies are inferred from the claim text.