Expandable article of footwear

Details Expandable article of footwear Expandable article of footwear

1979-06-14

1981-05-05

Kee Chi, James

Boots, shoes, and leggings

Boots and shoes

Sandals

36 3R, A43B 312, A43B 706

Patent

active

042650321

ABSTRACT:
An expandable article of footwear having a sole with an upper formed over at least a portion of the sole. At least a part of the upper has formed therein an array of elongated slits. The slits are colinearly arranged into substantially parallel columns with the slits spaced part in the columnar direction. The slits of adjacent columns are in staggered relationship with each other. In this manner, when the article of footwear is worn, the openings defined by the slits expand into a generally oval shape.

REFERENCES:
patent: 948300 (1910-02-01), Eastwood
patent: 1763605 (1930-06-01), Haskell
patent: 2146805 (1939-02-01), Engel
patent: 2696057 (1954-12-01), Flautt

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