Process for the production of a flexible anatomical insole in wo

Details Process for the production of a flexible anatomical insole in wo Process for the production of a flexible anatomical insole in wo

1985-07-10

1987-04-07

Schroeder, Werner H.

Boot and shoe making

Processes

Miscellaneous parts

12146BR, 36 33, 36 43, A43B 1308, A43B 1338

Patent

active

046549153

ABSTRACT:
According to the process of the invention one starts with a block of wood of approximately parallelepipedal shape from which, by means of operations of milling and turning, there are obtained opposed surfaces on which there are subsequently milled parallel channels extending through almost one-half of the thickness of the block. Into the channels there is introduced resilient rubber so as then to obtain a pair of perfectly symmetrical insoles, by making a longitudinal cut along the plane corresponding to one-half the thickness of the block. The insoles being made perfectly resilient by transverse layers of rubber which furthermore have anti-slip properties.

REFERENCES:
patent: 1198720 (1916-09-01), Graydon
patent: 1817287 (1931-08-01), Bell
patent: 1853990 (1932-04-01), Oakley
patent: 1935519 (1933-11-01), Quinn
patent: 1959382 (1934-05-01), Newton
patent: 2352532 (1944-06-01), Ghez et al.
patent: 2381937 (1945-08-01), Supple
patent: 4400894 (1983-08-01), Ehrlich
patent: 4543222 (1985-09-01), Ehrlich

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