Abrading – Accessory – Cooling
Patent
1997-02-28
1998-10-20
Rose, Robert A.
Abrading
Accessory
Cooling
451450, 451488, B24B 5502
Patent
active
058238638
ABSTRACT:
The prior art discloses machines which, for cooling the surface to be machined, have a gas supply line which opens into a gas outlet which is in the direct vicinity of the polishing disk. When CO.sub.2 is used as cooling gas, stoppages, which can be traced back to snow formation of the CO.sub.2, may occur in the line and in the gas outlet. In order to avoid blockages, the machine is assigned means for the supply of the liquid or supercritical CO.sub.2 which comprise a valve for regulating the throughflow quantity of the CO.sub.2 with an expansion nozzle, the valve being arranged inside the machine.
REFERENCES:
patent: 1952910 (1934-03-01), Decker
patent: 2635399 (1953-04-01), West
patent: 4129966 (1978-12-01), Smart
patent: 4523411 (1985-06-01), Freerks
patent: 4765096 (1988-08-01), Lang
patent: 5088242 (1992-02-01), Lubbering et al.
Henneborn Roland
Holz Peter
Lechner Michael
Volker Wolfgang
Messer Griesheim GmbH
Nguyen George
Rose Robert A.
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