Removable insoles
US4580356A · kind A · utility
17Cited by
7References
8Claims
0Family size
Inventor
Key dates
| Filing date | Mar 15, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Mar 15, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B17/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The removable insole for shoes consists of a thin strip (1) of plastic foam, such as polyolefin foam, in the general shape of the foot. This strip (1) has grooves (6, 7, 8) which are located at the edge of the insole or delimiting zones (3, 4, 5) on the insole which are of different thicknesses, and thus of different densities. The edge of the insole is bevelled (9, 10). The insole (1) gradually becomes permanently deformed on contact with the foot and finally adopts the profile thereof. The grooves (6, 7, 8) allow the insole to change shape more easily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.