The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 1977
Filed:
Sep. 10, 1976
Du Yung Hsiung, Park Forest, IL (US);
Scholl, Inc., Chicago, IL (US);
Abstract
An odor absorbing insole or insock covering the inner sole of footwear has a bottom inner sole engaging open cellular resilient cushion layer, an intermediate nonwoven random fiber felt mat porous layer having the fibers coated with an odor and moisture absorbing chemical such as activated charcoal or silica gel, and a porous slippery abrasion resisting top fabric layer protecting the foot or sock of the wearer against discoloration or irritation. The layers of the insole are laminated into integral unitary relation by heat sealing or by binders which do not impede flow of air. The alternating application and release of foot pressure on the insole as when walking will alternately compress and expand the open cellular cushion layer to pump air through intermediate layer and abrasion resisting top layer for circulating air in the footwear around the foot into intimate contact with the chemical for efficient absorption of moisture from foot perspiration and destruction of foot odors.