Adjustable internal energy return system for shoes

Details Adjustable internal energy return system for shoes Adjustable internal energy return system for shoes

1993-08-09

1995-03-14

Sewell, Paul T.

Boots, shoes, and leggings

Heels

Cushion

36 27, A43B 2130, A43B 1328

Patent

active

053967186

ABSTRACT:
An adjustable internal energy return system for use in running shoes and the like to provide an energy storage and release mechanism in the heel portion of the running shoe. The energy return system utilizes a tension adjustment strap to increase the base tension of a resilient carriage by providing additional resiliency. The tension adjustment strap is an additional independent energy return mechanism to the resilient carriage.

REFERENCES:
patent: 1625048 (1927-04-01), Rock
patent: 2508318 (1950-05-01), Wallach
patent: 2555654 (1951-06-01), Ostrom
patent: 3777374 (1973-12-01), Hendricks
patent: 3810318 (1974-05-01), Epstein
patent: 4492046 (1985-01-01), Kosova
patent: 4546555 (1985-10-01), Spademan
patent: 4592153 (1986-06-01), Jacinto
patent: 5187883 (1993-02-01), Penney
patent: 5311678 (1994-05-01), Spademan

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