Fluid flow system for spring-cushioned shoe

Details Fluid flow system for spring-cushioned shoe Fluid flow system for spring-cushioned shoe

2005-03-15

2005-03-15

Kavanaugh, Ted (Department: 3728)

Boots, shoes, and leggings

Soles

Cushion

C036S03500R, C036S027000, C036S00300B

Reexamination Certificate

active

06865824

ABSTRACT:
A fluid flow system for a spring-cushioned shoe is disclosed. The sole of the shoe includes a vacuity, a spring disposed within the vacuity, and a fluid passageway in fluid communication with the vacuity. The fluid flow passageway allows fluid, such as air, to escape the vacuity when the volume of the vacuity is reduced during a foot strike.

REFERENCES:
patent: 1380879 (1921-06-01), Young
patent: 2720041 (1955-10-01), Kajtar
patent: 3050875 (1962-08-01), Robbins
patent: 3225463 (1965-12-01), Burnham
patent: 4458430 (1984-07-01), Peterson
patent: 4910884 (1990-03-01), Lindh et al.
patent: 5282324 (1994-02-01), Cheng
patent: 5860225 (1999-01-01), O'Dwyer
patent: 6079123 (2000-06-01), Clark

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