Safety air plug and extrusion apparatus using same
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United States of America Patent
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Sep 19, 1989
Grant Date -
N/A
app pub date -
Oct 24, 1988
filing date -
Oct 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A safety plug for an extrusion apparatus for extruding pipe is provided with a valve opening when its tether to the extrusion die breaks. The valve can be formed by a disk on a rod which is axially displaceable in a tubular body having a flange forming a valve seat for the disk of the rod. The rod is connected to the chain.
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