User-specific shoe sole coil spring system and method

Details User-specific shoe sole coil spring system and method User-specific shoe sole coil spring system and method

1990-01-30

1991-08-27

Foster, Jimmy G.

Boots, shoes, and leggings

Soles

Cushion

36 27, 36 15, 36 43, A43B 1318

Patent

active

050421751

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.

REFERENCES:
patent: 3351353 (1967-11-01), Weitzner
patent: 4377042 (1983-03-01), Bauer
patent: 4715130 (1987-12-01), Scatena
patent: 4805319 (1989-02-01), Tonkel
patent: 4887367 (1989-12-01), Mackness et al.

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