Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert B. Weaver, III0
Date of Patent
November 15, 2005
0Patent Application Number
104071210
Date Filed
April 4, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An article of footwear includes a sole, an upper portion, and an energy storage system. The upper portion includes a shell for enclosing a user's foot therein. The energy storage system extends between the upper portion and the sole and converts impact forces generated by the user at the heel portion of the shell into propulsion forces to thereby enhance the user's performance.
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