Sole construction for footwear
US4551930A · kind A · utility
107Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1983 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Sep 23, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/38
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sole unit for footwear such as an athletic shoe includes an integral midsole/wedge or a wedge for use with a midsole. The integral midsole/wedge unit and the wedge for use with a midsole both are formed by a shell and an encapsulated core. The shell and core comprise plastic materials which have individual strengths and weaknesses in a shoe construction, yet provide, as a composite improved results in a shock dispersion and memory system. In a second aspect, the integral midsole/wedge is a single density or a two-density unit precompressed from a low density material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.