Cushioning devices for feet

Details Cushioning devices for feet Cushioning devices for feet

1994-12-19

1996-04-23

Sewell, Paul T.

Boots, shoes, and leggings

Insoles

36 44, 36 59C, 36 28, 36174, D2960, A43B 1338, A43B 1340, A43B 2328

Patent

active

055092187

ABSTRACT:
A cushioning device for cushioning the contact load on a foot during gait. The cushioning device includes a tread of curvilinear shock absorbing elements substantially extending along a basic contact trajectory equivalent to the locus of substantially maximum contact stress during foot rolling. Each shock absorbing element has a triangular-shaped cross section having an inclined face oriented toward the contact trajectory such that each of the shock absorbing elements is flexed away from the basic contact trajectory during stance. As a result, the cushioning device deforms along the basic contact trajectory to a greater degree than on the rest of the device area, thereby equalizing the plantar contact stresses and improving the shock absorbing process.

REFERENCES:
patent: 901236 (1908-10-01), Gordon
patent: 2088707 (1937-08-01), King
patent: 4546556 (1985-10-01), Stubblefield
patent: 4793078 (1988-12-01), Andrews
patent: 4879821 (1989-11-01), Graham et al.
patent: 5079856 (1992-01-01), Truelsen

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