| 摘要 |
An article of footwear (80) having a fluid filled cushioning bladder (10). The bladder comprises indentations (14a, 14b) and mating inserts (12) in the top and bottom surfaces of the bladder. The inwardly directed indentations about one another, are attached to one another, and have an ovoid shape. The construction of the indentations provide lateral stability and improved shear compliance by providing an increased contact surface area at the abutment point. The contact area preferably corresponds to the shape of the indentation. Each indentation receives an insert having a corresponding shape. The insert is designed to collapse in response to a compressive load and then recover its shape. The profile of each insert and indentation pair is configured for preferential collapse. That is, the two ends of the ovoid have different stiffnesses, so that one end collapses in response to a smaller compressive load than the other end.
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