Method of manufacture of a shoe
US4003146A · kind A · utility
Inventors
Key dates
| Filing date | Feb 13, 1975 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Feb 13, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43D3/021
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention facilitates manufacture of a shoe in which the foot has a correct vertical position, and has a better attitude then in known shoes, by anatomically correct development of the tread over the big toe and prevention of tilting over the outer edge. An inner bottom which is intended to be fitted on a last and connected with a shank and outsole, is provided with (i) an under surface which is approximately flat between the tips and the balls of the toes in the region of the front of the foot and also in the region of the heel, (ii) an upper surface which is practically flat in the region of the toes, and has depressions in the regions of the ball of the big toe and of the small toe, of which the first reaches downwards at least into the plane of the toe region, while the other is less pronounced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.