Composite material orthotic insert constructed for enhanced control and durability
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United States of America Patent
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Oct 5, 1999
Issued Date -
N/A
app pub date -
Jul 14, 1997
filing date -
Jun 3, 1994
priority date (Note) -
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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.
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