Injector for molten metal supply system
US6505674B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/2015
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An injector (100) for a molten metal supply system includes an injector housing (102) configured to contain molten metal. A molten metal supply source (132) is in fluid communication with the housing (102). A piston (104) extends into the housing (102). The piston (102) is movable through a return stroke allowing molten metal (134) to be received into the housing (102) from the molten metal supply source (132), and a displacement stroke for displacing the molten metal (134) from the housing (102). A gas supply source (144) is in fluid communication with the housing (102) through a gas control valve (146). The gas supply source (144) is used to pressurize a space (148) formed between the molten metal (134) and the piston (104) during the return stroke of the piston (104) such that when the piston (104) moves through the displacement stroke a compressed gas filled space is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.