The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2004
Filed:
May. 20, 2002
Harry W. Edwards, Barrington, IL (US);
Energaire Corporation, Cheyenne, WY (US);
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.