Boots – shoes – and leggings – Insoles – Laminated
Patent
1977-08-10
1978-11-07
Kee Chi, James
Boots, shoes, and leggings
Insoles
Laminated
36 3B, 36 29, 128594, A43B 1340, A43B 708
Patent
active
041238559
ABSTRACT:
An improved fluid filled insole is disclosed. One aspect of the improvement is the inclusion of openings to provide ventilation and to control flow of the fluid. The insole is formed of two superimposed sheets of flexible, fluid impervious material sealed together at selected sites to form an enclosure between the sheets capable of holding a fluid. Embodiments are disclosed wherein the openings lie on a transverse line underlying the ball of the foot, on a longitudinal line underlying the longitudinal arch of the foot, and on a transverse line underlying the heel. Another aspect of the improvement is the use of foam material enclosed between the sheets.
REFERENCES:
patent: 1453394 (1923-05-01), Klepac
patent: 1504908 (1924-08-01), Sato
patent: 1653059 (1927-12-01), Nelson
patent: 1869257 (1932-07-01), Hitzler
patent: 2080469 (1937-05-01), Gilbert
patent: 2086389 (1937-07-01), Pearson
patent: 3120712 (1964-02-01), Menken
patent: 3724106 (1973-04-01), Magidson
patent: 3795994 (1974-03-01), Ava
patent: 3914881 (1975-10-01), Striegel
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