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US 4,894,932 AGranted
Air-permeable shoe
AssigneeNippon Rubber Co., Ltd.
InventorsMasasuke Harada, Yutaka Kumagawa, Yoshiharu Moronaga
Life of this patent
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Abstract
An air-permeable shoe including a shoe constructed of an open-cell rubber foam. A base cloth is attached to the sole or insert therein. The sole of the shoe is exposed on a side surface of the sole of the shoe wherein a top side surface of the sole is in communication with the inside of the shoe and the ambient atmosphere. The open-cell rubber foam may be a rubber latex foam having a microstructure with a compression permanent set of less than 20%.
Claims14
An air-permeable shoe comprising:
- a sole constructed of an open-cell rubber foam;
- and
- a base cloth attached to said sole or inset therein;
- said sole and said base cloth of the shoe being exposed on a side surface of the sole of the shoe wherein a top side surface of said sole is in communication with the inside of the shoe and the ambient atmosphere for enabling air and humidity within said shoe to be discharged through the open-cell rubber foam and the side surface of the sole by a capillary action.
1 more element
Dependencies are inferred from the claim text.