Injection apparatus for melted metals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 13, 2004
Grant Date -
Jun 28, 2001
app pub date -
Dec 19, 2000
filing date -
Dec 24, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An injection apparatus for transferring melted metals is capable of metering and degassing the melted metal in a reservoir to reserve metals in the liquid phase for injection. The injection apparatus includes a heating cylinder having a metering chamber. An injection screw is movably and rotationally installed within the heating cylinder. A tip end of the injection screw forms a plunger insertable into the metering chamber with a clearance for sliding. The reservoir includes an axial portion free of screw flights between the plunger and a feeding portion that has a screw flight around its axis. A projected portion for limiting the feeding of granular metals flowing to the reservoir and for preventing the metals in liquid phase from flowing backward during injection is provided on a boundary between the feeding portion and the reservoir.
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