Estella B Lindsay

US Patent:

60064471, Dec 28, 1999

Filed:

Apr 22, 1999

Appl. No.:

9/296548

Inventors:

James R. Neal - Jackson MS
Estella B. Lindsay - Jackson MS

International Classification:

A43B 706

US Classification:

36 3B

Abstract:

The present invention discloses a device for a shoe insole having multiple layers which form an air circulation system. A first layer is a fabric-like covering; a non-deformable second and deformable third layers forming together a layer with a cavity therein having offset apertures therein communicating by means of the cavity positioned underneath the fabric-like covering; a fourth layer made of foam rubber like material that deflates under the user's weight and re-expands when not under the user's weight; a bottom layer being a stiffer layer that forms a recess for receiving the other layers. A first and second exhaust conduit is formed in a side extension area for outward passage of stale air. The layers are joined to each other and the device is then inserted into the shoe of the user. The weight of the user is alternatively placed on and removed from the insole while walking or running.