Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
August 14, 2007
Patent Application Number
10774704
Date Filed
February 6, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
An article of footwear having a variable support structure includes a sole structure and an upper secured to the sole structure. At least one reservoir of magneto-rheological fluid is positioned in at least one of the upper and the sole structure. A magnet assembly is positioned proximate each reservoir, and a magnetic field produced by the magnet assembly transforms the magneto-rheological fluid from a fluid state to a near-solid state.
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