Insole
First Claim
1. An insole comprising a continuous portion of substantially uniform thickness having formed on the underside thereof a plurality of projecting ribs arranged so as to oppose bending of said continuous portion, said ribs being uniformly spaced from and at angles to one another and arranged so as to form a labyrinth-like, non-straight, continuous air conveying channel between said continuous portion and the top-sole of a shoe when said insole is positioned within the shoe, said channel being open at the edges of said continuous portion and said ribs pumping air through said channel and past the edges of said continuous portion.
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Accused Products
Abstract
A foam latex insole includes a number of ribs on its undersurface. The ribs face the top-sole of a shoe when the insole is placed therein, and are formed of foam latex which is closed-pored and somewhat firmer than the foam latex which forms the continuous part of the insole. The ribs can be straight, curved or sharply bent, and form a labyrinth of ventilation channels between the top-sole of the shoe and the underside of the foot. The arrangement of the rib is such that a pumping effect is developed in response to pressure changes on the insole which promotes the exchange of air within the shoe to maintain a suitable environment for the feet.
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Citations
16 Claims
- 1. An insole comprising a continuous portion of substantially uniform thickness having formed on the underside thereof a plurality of projecting ribs arranged so as to oppose bending of said continuous portion, said ribs being uniformly spaced from and at angles to one another and arranged so as to form a labyrinth-like, non-straight, continuous air conveying channel between said continuous portion and the top-sole of a shoe when said insole is positioned within the shoe, said channel being open at the edges of said continuous portion and said ribs pumping air through said channel and past the edges of said continuous portion.
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16. An insole comprising a continuous portion of substantially uniform thickness having formed on the underside thereof a plurality of projecting ribs arranged at substantially right angles to one another and so as to form a labyrinth-like continuous air conveying channel between said continuous portion and the top-sole of a shoe when said insole is positioned within the shoe, said channel being open at the edges of said continuous portion and said ribs pumping air through said channel and past the edges of said continuous portion.
Specification