Gas injector for the molding of plastic hollow parts
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United States of America Patent
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-
Nov 2, 1999
Grant Date -
N/A
app pub date -
Mar 6, 1996
filing date -
Mar 6, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas injector including a tube extending into the hollow enclosure of a housing. The hollow enclosure of the housing is connected with gas pressure. The outside end of the tube being extendable into the cavity of a plastic material injection mold. That end of the tube defines a valve seat. A valve is seatable on the seat. A rod on the valve extends through the tube into the hollow enclosure of the housing. A spring in a cup shape support normally urges the rod to move the valve onto the valve seat. A solenoid plunger acting on the rod and activated by an electromagnet moves the rod against the spring to raise the valve off the valve seat.
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