Patent Number: 6,170,173

Title: Method and apparatus for fluid flow transfer in shoes

Abstract: A method and apparatus for transferring the flow of fluid through tubes in the sole of shoes. The apparatus includes a pair of fluid filled tubes along the periphery of the sole of the shoe. One tube is connected to cross tubes that provide flow paths and cushions the for the ball and instep portions of the foot. The other tube is connected to cross tubes that provide flow paths and cushions heel portion of the foot. Adjustable pressure valves interposed between the fluid filled tubes permit a method of controlling the flow of fluid through the valves in one direction only. The pressure resistance of the valves are pre-set for a certain internal pressure level required for triggering the transfer of fluid from one tube to the other. The method include steps of controlling pressure resistance by adjusting valve pressure adjustment rings either in a clockwise direction about a rod for increasing internal pressure resistance, or in a counter-clockwise direction for decreasing internal resistance.

Inventors: Caston; Gayford (Durham, NC)

Assignee:

International Classification: A43B 13/18 (20060101); A43B 13/20 (20060101); A43B 21/26 (20060101); A43B 23/07 (20060101); A43B 21/00 (20060101); A43B 23/00 (20060101); A43B 007/06 (); A43B 007/20 (); A43B 007/14 (); A61F 005/14 ()

Expiration Date: 01/09/2018