User-specific shoe sole coil spring system and method
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United States of America Patent
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-
Aug 27, 1991
Grant Date -
N/A
app pub date -
Jan 30, 1990
filing date -
Jan 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A user-specific shoe sole coil spring system provided as a customized layout of individual coil springs which are seated in a shoe sole having prefabricated circular depressions on its surface. The coil spring system layout and stiffness characteristics may be customized to serve the needs of different users and different applications. A user's weight and particular comfort and/or orthopedic requirements are met in a given shoe size by fitting it with a greater or lesser quantity of springs with different levels of stiffness, or the layout may be a combination of levels. The result is a shock absorption distribution pattern and energy return system for the shoe sole to suit the requirements of a particular application. The sole has a cover strip overlaying the coil spring system which is openable and reclosable for allowing changes in the layout as required, or an entire sole may be replaced as a unit.
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