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US 4,254,524 AGranted
Boot tree
OwnerYasuyuki Okuiinventor
Life of this patent
Estimating the term…
Abstract
A boot tree including shin- and calf-shaped parts, integrally formed with a bow spring. The repulsive force by the bow springs preserves the shape of a boot into which the boot tree is inserted.
Claims1
A boot tree comprising a shin-shaped part and a calf-shaped part, both of said parts being integrally formed with a bow spring inwardly extending therefrom and being in the shape of an arc with the mid-portion thereof projecting beyond the plane of the inner brim of the respective part,
- wherein a protuberance is provided in the mid-portion of the arc formed by one of said bow springs and a hole is provided in the mid-portion of the arc formed by the other so that said protuberance fits into said hole when said shin-shaped part and said calf-shaped part are put together,
- and wherein a slit is formed in the longitudinal ridgeline of said shin-shaped part or said calf-shaped part so that one of them can be placed on the other with the bow spring on said one fitted in said slit in the other.
Dependencies are inferred from the claim text.