Sole elements of varying density and methods of manufacture
US7464428B2 · kind B2 · utility
30Cited by
38References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Sep 2, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to sole elements and methods for manufacturing sole elements for shoes, in particular for sport shoes, with a specific density distribution in a transverse and/or longitudinal direction. The methods include the steps of manufacturing a sole element preform from a polymer material with a thickness varying in the transverse and/or longitudinal direction depending on the desired density distribution and the press-forming of the sole element preform in a forming tool to form the finished sole element from the sole element preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.