Spring-air shock absorbtion and energy return device for shoes

Details Spring-air shock absorbtion and energy return device for shoes Spring-air shock absorbtion and energy return device for shoes

1996-10-03

1998-04-28

Sewell, Paul T.

Boots, shoes, and leggings

Soles

Spring heel

36 28, 36 38, A43B 2130, A43B 2132

Patent

active

057430284

ABSTRACT:
A shoe heel insert, especially suitable for athletic shoe applications, providing for superior shock absorption and energy return characteristics to the wearer, as well as a high degree of stability. The unit which is referred to as the SPRING-AIR SYSTEM, will consist of a substantially heel shaped outer spring mechanism which also serves as the internal spring housing by way of a plurality of internally formed projections, and a plurality of vertically affixed compression springs retained by the said projections with the springs biasing the outer spring mechanism. The entire unit will be filled with a pressurized gas and hermetically sealed with a clear, durable polyurethane material which completely encapsulates the device while still allowing the inner springs to be visible. The assembled unit will be molded within the heel section of the mid-sole of an athletic shoe, or any suitable type shoe, during the shoes manufacturing process. The internal spring members will be disposed directly below the calcaneus of the wearer and the transparent nature of the devices encapsulation will allow the rear part of the shoes sole to be molded in such a way that the system can be partially exposed, adding further novelty to the shoe.

REFERENCES:
patent: 487779 (1892-07-01), Marinitsch
patent: 968020 (1910-08-01), Yandoli
patent: 1502087 (1924-07-01), Bunns
patent: 3665621 (1972-05-01), Massella
patent: 4492046 (1985-01-01), Kosova
patent: 4815221 (1989-03-01), Diaz
patent: 4843737 (1989-07-01), Vorderer
patent: 5060401 (1991-10-01), Whatley
patent: 5224278 (1993-07-01), Jeon
patent: 5282325 (1994-02-01), Deyl
patent: 5381608 (1995-01-01), Claveria
patent: 5544431 (1996-08-01), Dixon

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