| 摘要 |
For use in a sole, insole, or heel portion of a footwear article, a footpad (10) is described, having an upper surface on which are disposed a plurality of resilient lugs. The top surfaces (32) of the lugs define a foot supporting surface wherein mutually parallel, spaced-apart edges of the adjacent lugs define a complementary arrangement of top surfaces. The side surfaces (34) of adjacent lugs expand into the void, and retreat therefrom, cyclically expelling and ingesting air beneath the foot. With heavy compression, the top surfaces (32) of adjacent lugs are approximated to one another to provide a substantially continuous and substantially uniformly supportive foot-supporting surface. Structures selectively providing for preferred combination of ventilation, cushioning, and stable and comfortable support for bearing heavy loads are described. The selective provision of enhanced support for heavy load bearing parts of the foot is described.
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