Composite material orthotic insert constructed for enhanced cont

Details Composite material orthotic insert constructed for enhanced cont Composite material orthotic insert constructed for enhanced cont

1997-07-14

1999-10-05

Patterson, M. D.

Boots, shoes, and leggings

Insoles

Laminated

36140, 36 88, A43B 1338, A43B 1341

Patent

active

059605669

ABSTRACT:
A composite material blank for an orthotic insert. The device is formed of layers of fiberglass and graphite fiber material. A first graphite fiber layer provides the overall structure with increased strength, while secondary graphite fiber reinforcement strips are arranged below the first and fifth rays of the foot to provide additional rigidity and control in these areas. The edges of the graphite fiber layers are recessed inwardly from the edges of the fiberglass layers so as to provide a graphite-free border which prevents cracks from propagating into the graphite fiber layers. The layers are bonded together by heat curing over molds.

REFERENCES:
patent: Re32698 (1988-06-01), Brown
patent: 3736673 (1973-06-01), Dubner
patent: 4610101 (1986-09-01), Brown
patent: 4611413 (1986-09-01), Brown
patent: 4612713 (1986-09-01), Brown
patent: 4654984 (1987-04-01), Brown
patent: 4688338 (1987-08-01), Brown
patent: 4702255 (1987-10-01), Schenkl
patent: 5025573 (1991-06-01), Giese et al.

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