Shoe with dual cushioning component

Details Shoe with dual cushioning component Shoe with dual cushioning component

1997-11-18

1999-08-03

Kavanaugh, Ted

Boots, shoes, and leggings

Soles

Cushion

36 25B, A43B 1320

Patent

active

059309180

ABSTRACT:
A shoe of the present invention comprises a sole, a flexible bladder, and a cushioning material. The sole has a recess configured to receive the flexible bladder. The flexible bladder has interior surface portions defining at least one chamber. The chamber includes a first region and a second region. A cushioning material occupies the first region and a compressible fluid occupies the second region. The compressible fluid provides a primary elastic response to an external pressure applied to an external surface of the bladder through compression of the compressible fluid. The cushioning material, elastically deformable but generally incompressible, provides a secondary elastic response to the external pressure applied to the external surface of the bladder through elastic deformation of the cushioning material. A method of the present invention comprises forming a shoe sole having a recess therein, providing a flexible bladder having interior surface portions defining an interior volume, placing an amount of fluid which is curable to an elastomeric solid condition into the interior volume of the bladder, and allowing the fluid to cure to said elastomeric solid condition.

REFERENCES:
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patent: 4472890 (1984-09-01), Gilbert
patent: 4657716 (1987-04-01), Schmidt
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patent: 4934072 (1990-06-01), Fredericksen et al.
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patent: 5042100 (1991-08-01), Bar et al.
patent: 5067255 (1991-11-01), Hutcheson
patent: 5097607 (1992-03-01), Fredericksen
patent: 5131174 (1992-07-01), Drew et al.
patent: 5203793 (1993-04-01), Lyden

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