Heat insulating insert for footwear
OwnerYoshiyasu Yoshidainventor
Life of this patent
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Abstract
A heat insulating insert for a footwear which comprises a base sheet having a shape conforming with that of the sole of an average human foot and a toe cover at the toe portion of the base sheet for embracing the toe of the human foot. Porous bags containing exothermic agent therein are provided on the inner surface of the top of the toe cover and the toe portion of the base sheet in opposing and spaced relationship to the exothermic agent bag on the inner surface of the top of the toe cover and also in a portion of the base sheet corresponding to the plantar arch of the human foot. The exothermic agent performs exothermic reaction with the open air.
Claims8
A heat insulating insert for a footwear comprising a main body which includes a base sheet having a shape substantially conforming with the shape of the sole of a human foot and a toe cover at the toe-shaped end of said base sheet corresponding to the toe of said human foot;
- and permeable bags positioned in said toe portion and a portion of said base sheet corresponding to the plantar arch of said human foot and on the inner surface of said toe cover and each containing exothermic agent which performs exothermic reaction with the open air upon contacting the open air, said permeable bags at said toe shaped-end of the base sheet and on the inner surface of said toe cover being in opposing and spaced relationship to each other to embrace said toe of the human foot.
Dependencies are inferred from the claim text.