"Injection moulding process for soles in expansible and cross-linking ""EVA"" b"
US5837174A · kind A · utility
19Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/71
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An injection molding process for soles using expansible and cross-linking EVA based compounds. During the cooling stage of the molded sole, the spontaneous shrinkage of the molded sole is arrested by means of a template placed on the sole. To accomplish this, a series of perimeter pin elements extend from the bottom surface of the template and are coupled with a corresponding series of perimeter holes defined on the upper surface of the sole. The dimensions of the sole therefore will reduce no further either during the remaining cooling phase or after cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.