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US 6,282,816 B1Granted
Insole for footwear
OwnerJay W. Rosendahlinventor
Life of this patent
Estimating the term…
Abstract
An insole for a shoe or boot produced by molding together a stiff outer plastic shell, a dual foam inner layer of rubber-like material and a fabric upper layer engaged by the foot. A more dense foam is provided for the inner layer at the arch of the foot. The shell is feathered or thinned toward the fore foot area and extends only to the ball of the foot. The shell is provided with a cut out at the heel and a pad secured to the insole at the cut out cushions the heel at the strike position.
Claims3
An insole for a foot wear having a foot bed with heel, arch and ball portions comprising:
- a combination of sandwiched layers bonded together as a unit including a flexible fabric top layer, a flexible dual foam sub-layer and a semi-rigid plastic shell under layer, said fabric top layer configured to the shape of the foot bed of the foot wear and said dual foam sub-layer configured and sized to the shape of the fabric top layer, and said plastic shell configured to fit the shape of the heel and extending forwardly from the heel past the arch portion and a leading end of the shell feathered to form a progressively more flexible extreme edge end for avoiding a noticeable edge of conversion between the primarily non-flexible shell support and flexible non-shell support portions, the heel of the shell having a portion removed at a position of heel impact to define an opening, and a rubber pad secured to the bottom of the sub-layer at said opening, said shell having upwardly turned semi-rigid side edges and said dual foam sub-layer having a combination of foam densities, the foam provided in the arch portion being more dense than the foam at the remaining portion of the sub-layer.
Dependencies are inferred from the claim text.