Multi-density shoe sole
US5025573A · kind A · utility
270Cited by
22References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1986 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Jun 4, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/188
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A composite shoe bottom is disclosed comprising a lower layer of firm material and an upper softer layer superposed thereon. Each layer has an upper contoured surface such that the total compressibility of the shoe bottom, as determined by the relative thicknesses of the layers, is predetermined and differs along the surface. The upper layer has an uppermost surface which is shaped to fit against and be complemental to the bottom of the foot of a wearer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.