Overhead return piping system

Details Overhead return piping system Overhead return piping system

2005-06-28

2005-06-28

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

Structural installation

Closed circulating system

C210S171000, C210S416500, C210S104000

Reexamination Certificate

active

06911142

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.

REFERENCES:
patent: 4655940 (1987-04-01), Harms
patent: 5223156 (1993-06-01), Maier
patent: 5380446 (1995-01-01), Bratten
patent: 6508944 (2003-01-01), Bratten

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