Boots – shoes – and leggings – Insoles – Laminated
Patent
1985-02-05
1987-04-21
Schroeder, Werner H.
Boots, shoes, and leggings
Insoles
Laminated
36 31, 36 35R, 36 43, A43B 1338
Patent
active
046585150
ABSTRACT:
A heat retention insole for shoes comprises a laminated structure incorporating a flexible plastic bottom sheet, a similar flexible plastic upper sheet, and a spacer sheet formed primarily of foamed organic plastic material. The spacer sheet is provided with large area apertures defined by bars extending transversely between portions of a perimetral band portion. The large area apertures are loosely filled with particles of insulating plastic material, thus assuring that the top and bottom sheets are maintained in spaced relationship even when subjected to foot pressure. The outer surfaces of the insole are preferably provided with a heat reflecting coating or film to minimize the loss of heat from the foot by radiation and reflect any such radiated heat back into the foot of the wearer.
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Ellis Mary A.
Schroeder Werner H.
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