Boots – shoes – and leggings – Heels – Cushion
Patent
1990-08-27
1992-07-21
Sewell, Paul T.
Boots, shoes, and leggings
Heels
Cushion
36 35R, 36 29, A43B 2128
Patent
active
051311747
ABSTRACT:
A self-reinitializing padding device having at least two fluidly connected chambers which contain flowable material for use in applications where it is desirable to reinitialize the padding device for subsequent use in absorbing and/or distributing impact forces. One application for which the padding device is particularly well suited is as a foot padding device in footwear. In this application, the device provides improved absorption and distribution of impact forces generated when the footwear contacts a surface, as well as improved lateral support for the foot. In a preferred embodiment, a primary chamber is positioned under the area to be padded, and a plurality of secondary chambers, each fluidly connected to the primary chamber, are positioned around the padded area. The impact force of the user's foot deforms the primary chamber, thereby forcing some of the flowable material contained therein to flow into the secondary chambers. The rate of deformation of the primary chamber exceeds the flow rate into the secondary chambers, thereby providing a cushioning effect. When the portion of the footwear coinciding with the primary chamber loses contact with the ground, the force is removed from the primary chamber, thereby allowing the secondary chambers to contract and force some of the flowable materials contained therein back into the primary chamber to reinitialize the padding device.
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Drew Terrence M.
Hanson Alden B.
Hanson Chris A.
Alden Laboratories, Inc.
Kavanaugh Ted
Sewell Paul T.
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