Boots – shoes – and leggings – Insoles – Laminated
Patent
1992-01-30
1996-02-06
Hilliard, Thomas P.
Boots, shoes, and leggings
Insoles
Laminated
36 43, A43B 1338
Patent
active
054887860
ABSTRACT:
The present invention pertains to a resilient shoe insole. The shoe insole is comprised of a resilient material having sufficient thickness in the heel and forefoot region to allow the resilient material to act as a spring, thereby absorbing the impact of a foot and then returning at least 70% of absorbed energy to the foot thereon and providing increased lift and response to the foot and reduced O.sub.2 demand in running relative to other insoles for a given activity. In a preferred embodiment, the shoe insole has a heel portion and a forefoot portion, wherein the heel portion is thicker than the forefoot portion. The heel portion is at least 3/8 inch thick and the forefoot portion is at least 1/4 inch thick. In another embodiment, the base is comprised of multiple laminations of the resilient material. In another preferred embodiment, the shoe insole is comprised of a wedge-shaped heel pad comprised of a resilient material which absorbs the maximum impact of the heel of the foot and then returns 70% of absorbed energy to the heel; the heel pad is adapted to fit under a standard sockliner of an athletic shoe and is at least 3/8 inch thick. The heel pad is wedge-shaped with at least an 8.degree. taper such that each step causes the foot to be thrust forward.
REFERENCES:
patent: 4435910 (1984-03-01), Marc
patent: 4633598 (1987-01-01), Moronaga et al.
patent: 4800657 (1989-01-01), Brown
patent: 4823420 (1989-04-01), Bartneck
patent: 4823483 (1989-04-01), Chapnick
patent: 4910882 (1990-03-01), Goller
patent: 4930232 (1990-06-01), Engle
patent: 4974342 (1990-12-01), Nakamura
patent: 5068983 (1991-12-01), Marc
patent: 5146698 (1992-09-01), Tilles et al.
Hilliard Thomas P.
Schwartz Ansel M.
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