Material having compressible projections and footwear...

Boots – shoes – and leggings – Soles – Cushion

Reexamination Certificate

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Details

C036S088000, C036S00300B, C036S141000

Reexamination Certificate

active

07089690

ABSTRACT:
The present invention relates to a material with a substrate and a plurality of compressible projections connected to the substrate. The projections may be formed in a thermoplastic substrate to have a variety of shapes, including a shape that defines a base portion and a spring portion. The spring portion may have a structure of a belleville spring that exhibits a non-linear and bi-stable response to compressive forces. The material may be incorporated into an upper for an article of footwear, thereby providing the footwear with enhanced fit and comfort characteristics.

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HK Metalcraft Manufacturing Corporation website page entitled “Belleville Spring Washers,” downloaded on May 9, 2001.
West Coast Lockwasher Company website pages entitled “Belleville Disc Springs,” downloaded on May 9, 2001 (pp. 95 and 96).

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