| 摘要 |
An athletic shoe having a substantially horizontal chamber substantially within a heel portion of a midsole, having atmospheric communication at its lateral sides, includes a chamber having an upper substantially rigid horizontal support plate having several transverse downwardly directed resilient cavities, each of the cavities defined by an upper resilient sleeve. The chamber also includes a lower substantially rigid horizontal support plate having corresponding upwardly directed resilient cavities, each of the cavities defined by a lower resilient sleeve; and includes resilient elements having a vertical length greater than an aggregate vertical length of walls of each pair of the upper and lower cavities when the resilient elements are uncompressed, the resilient elements each having a greater spring constant and spring rate than the walls of the cavities.
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