Overhead return piping system
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United States of America Patent
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Jun 28, 2005
Grant Date -
Oct 2, 2003
app pub date -
Mar 28, 2003
filing date -
Mar 29, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for circulating coolant liquid between machine tools and a coolant filtering unit through an overhead return line. A small stream of clean coolant is diverted to a flush tank and the tank is pressurized, e.g., with compressed air. Periodic release of the pressurized liquid from the flush tank through the overhead return line flushes deposited chips and other sediments from the return line.
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