Protective cage for footwear bladder

Details Protective cage for footwear bladder Protective cage for footwear bladder

2005-09-20

2005-09-20

Patterson, M. C. (Department: 3728)

Boots, shoes, and leggings

Soles

Cushion

C036S031000, C036S03500R, C036S03500R

Reexamination Certificate

active

06944973

ABSTRACT:
A protective cage for footwear bladders is disclosed. The protective cage includes a cage base and a plurality of support members that extend outwardly from the cage base. The support members extend across the side wall of the bladder to protect the device from abrasion and to prevent fatigue. The use of the support members, which selectively bend and buckle under loaded conditions, control the amount of perimeter deflection of the bladder, while allowing for complete deflection at the center of the bladder.

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Robert C. Juvinall, Professor of Engineering University of Michigan and Kurt M. Marshek, Professor of Mechanical Engineering University of Texas; Fundamentals of Machine Component Design, Second Edition 1991, pp. 454-455, Section 12.10 Beam Springs (Including Leaf Springs): John Wiley & Sons Publishing, USA.

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