Footwear structure with outsole bulges and midsole bladder
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United States of America Patent
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-
Jun 29, 2004
Grant Date -
N/A
app pub date -
May 20, 2002
filing date -
May 20, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A footwear structure includes an outsole having outwardly projecting heel and metatarsal bulges joined by a resticted channel, the bulges and channel all opening at an interior surface of the outsole. A flexible bladder is disposed against the interior surface of the outsole and has a generally horseshoe-shaped pocket straddling the heel cavity of the outsole and a pair of matatarsal pockets respective disposed upon opposite lateral sides of the metatarsal cavity of the outsole, the ends of the bladder heel pocket being respectively joined to the metatarsal pockets by restricted passageways to from a closed fluid-containing system. The bladder pockets are respectively accommodated in recesses in an inner surface of a midsole which is secured to the interior surface of the outsole for closing the outsole cavities and restricted channel to form another closed fluid-containing system.
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