Apparatus for molding footwear
US4886238A · kind A · utility
6Cited by
6References
4Claims
0Family size
Inventor
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D35/061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for injecting molten plastics material into a midsole cavity by the provision of channels entirely within at least one-half of a split side mold defining sides of the cavity. This arrangement eliminates the problems associated with injecting the molten plastics along a channel formed in the parting line between the side mold halves and particularly overcomes the problem of injecting molten plastics material incorporating a blowing agent to provide closed cells in the midsole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.