Apparatus for the injection molding of a metal alloy: sub-ring concept
US5680894A · kind A · utility
32Cited by
15References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1996 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S164/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention reveals an improvement in an apparatus for injection molding a metallic material having dendritic properties. In the improvement, a sub-ring is placed under a piston ring on a sliding seal ring of a non-return valve assembly. The sub-ring seals the pressure and metal flow in the apparatus, virtually eliminates piston ring leakage and extends the usable life of the non-return valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.