Self-ventilating footwear

Details Self-ventilating footwear Self-ventilating footwear

1997-02-28

1999-01-19

Kavanaugh, Ted

Boots, shoes, and leggings

Soles

Spring heel

36 3B, 36 35B, 36 29, A43B 1320, A43B 706

Patent

active

058602259

ABSTRACT:
An energy-return pump chamber for footwear. A lateral cross-section of the chamber having rigid top and side portions with flexible top and side elbows between. A longitudinal cross-section of the chamber a flat bottom portion, a rear flat horizontal portion of the top and a downward-slanting front portion of the top down to the forward end of the flat bottom.

REFERENCES:
patent: 1638350 (1927-08-01), Long
patent: 3377722 (1968-04-01), Downing
patent: 3716930 (1973-02-01), Brabm
patent: 4342158 (1982-08-01), McMahon et al.
patent: 4535553 (1985-08-01), Derderian et al.
patent: 4774774 (1988-10-01), Allen, Jr.
patent: 5138776 (1992-08-01), Levin
patent: 5606806 (1997-03-01), O'Dwyer

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