Boots – shoes – and leggings – Boots and shoes – Heated
Patent
1988-08-11
1990-07-17
Kee Chi, James
Boots, shoes, and leggings
Boots and shoes
Heated
36117, 36119, 2 21R, A43B 702, A43B 504, A41D 100, A61F 700
Patent
active
049412710
ABSTRACT:
There is disclosed a frictional heat generator and a forced air circulation system for shoes and, in particular, for boots such as ski boots. The shoe has an inner sole which is formed of a pair of sole plates which are mounted for relative sliding movement in the shoe. The upper sole plate is pivotally attached at its toe end to an outer sole of the shoe. The lower sole plate of this pair is pivotally mounted with a crank arm which is located at its heel end. Twisted torsion cables are provided to bias the sole plates upwardly against the applied weight of the wearer. A compartment is formed in the shoe between the pair of sole plates and outer sole and is enclosed with a diaphragm to function as a bellows-type air pump to circulate air through the shoe. Preferably, the forced air circulation system is used in which an air bag which overlies the arch of the shoe and with an air pressure hand pump whereby the air pressure within the shoe can be adjustably set to provide the desired degree of tension on the fasteners of the boot.
REFERENCES:
patent: 3029530 (1962-04-01), Eaton
patent: 3892225 (1975-07-01), Twose
patent: 4420893 (1983-12-01), Stephan
patent: 4507877 (1985-04-01), Vaccari et al.
patent: 4547906 (1985-10-01), Nishida et al.
patent: 4631843 (1986-12-01), Annovi
patent: 4702022 (1987-10-01), Porcher
patent: 4756095 (1988-07-01), Lakic
patent: 4782602 (1988-11-01), Lakic
patent: 4799319 (1989-01-01), Zellweger
patent: 4800867 (1989-01-01), Owens
patent: 4823482 (1989-04-01), Lakic
patent: 4845338 (1989-07-01), Lakic
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