Molded shanks
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United States of America Patent
Stats
-
Jul 12, 1983
Grant Date -
N/A
app pub date -
Jan 15, 1982
filing date -
Jan 15, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spring-type shank for a shoe sole is formed on the bottom of a shoe assembly during manufacture of the shoe. The heel end of the shank is formed so that it is raised slightly from the heel seat region of the insole to provide a 'spring shank'. The shank is formed directly on the bottom of the shoe insole from a strip of initially flexible, uncured thermosetting material which may be fiber reinforced. The spring portion at the heel end of the shank is formed by placing a wedge between the shoe insole and the heel end of the shank strip during the curing process thereby to cause the heel end of the shank strip to cure in a raised, inclined attitude, spaced from the bottom of the insole, while the more forward, remaining portions of the shank strip cure in secure attachment to the insole bottom.
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