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Document Number
US Patent 7401421
Issued Date
July 22, 2008
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Abstract
A sole construction for use in the manufacture of a shoe has an outer sole made of a soft and pliable natural or synthetic elastomeric material having a substantially uniform thickness over its entire area. The outer sole has a substantially planar external surface (when relaxed) for contacting the ground, with cuts formed therein to enhance grip. A puncture-resistant inner sheet of woven synthetic fibers is bonded to the internal surface of the outer sole and an inner lining is bonded to the puncture-resistant inner sheet. A removable soft insole may be provided on the inner lining. The sole construction is lightweight and highly flexible such that a foot of a wearer may flex in the same manner as if the wearer was barefoot with the puncture-resistant inner sheet protecting the wearer's foot from accidental injury from sharp objects on which the wearer may tread.
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Number of Claims:
19
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Published
July 22, 2008
Application Number
11/021,397
Filed
December 23, 2004
US Classification
36/30R   36/107 36/73
Int'l Classification
A43B   23/00   (20060101)  
Examiner
Priority Data
Dec 23, 2003 [GB] 0329813.0
USPTO Field of Search
36/30R   36/73   36/103   36/104   36/107   36/32R   36/14  
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