Abstract: The present subject matter relates to systems, devices, and methods for controlling fluid flow transfer in footwear in which a front chamber has a first inlet and a first outlet, a rear chamber has a second inlet and a second outlet, a first valve assembly is connected between the second outlet and the first inlet and is configured to allow fluid to pass unidirectionally from the rear chamber to the front chamber, and a second valve assembly is connected between the first outlet and the second inlet and is configured to allow fluid to pass unidirectionally from the front chamber to the rear chamber. In addition, one or both of the front chamber or the rear chamber can include one or more openings therethrough that are configured to allow fluid to pass into or out of the respective chamber with respect to a surrounding environment.

Abstract: The present subject matter relates to systems, devices, and methods for controlling fluid flow transfer in footwear in which a front chamber has a first inlet and a first outlet, a rear chamber has a second inlet and a second outlet, a first valve assembly is connected between the second outlet and the first inlet and is configured to allow fluid to pass unidirectionally from the rear chamber to the front chamber, and a second valve assembly is connected between the first outlet and the second inlet and is configured to allow fluid to pass unidirectionally from the front chamber to the rear chamber. In addition, one or both of the front chamber or the rear chamber can include one or more openings therethrough that are configured to allow fluid to pass into or out of the respective chamber with respect to a surrounding environment.

Abstract: A method and apparatus for sing 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.

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.