Shoe sole construction
US5014449A · kind A · utility
246Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Sep 22, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B3/0084
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention comprises an intermediate layer for a shoe sole consisting of a hollow shell having convolutions disposed along the periphery thereof. The convolutions are adapted to cushion the foot by compressing when force is applied thereto, and expanding to their original configuration when the force is relieved. An inner filler material may be provided within the shell for added cushioning and resilience.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.