Cryorefrigerator contaminant removal

Details Cryorefrigerator contaminant removal Cryorefrigerator contaminant removal

2007-11-20

2007-11-20

Jones, Melvin (Department: 3744)

Refrigeration

Refrigeration producer

With lubricant handling means

Reexamination Certificate

active

10859429

ABSTRACT:
Disclosed is a method of removing contaminants from a GM type cryogenic refrigerator that incorporates an oil lubricated compressor where such contaminants are introduced during servicing the refrigerator where at least some of the oil is replaced with clean oil.

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patent: 6488120 (2002-12-01), Longsworth
patent: 7076960 (2006-07-01), Takemasa
Longsworth, R.C., Helium compressor for GM and pulse-tube expanders, 2002, Advances in Cryogenic Engineering: Proceedings of the Cryogenic Engineering Conference, vol. 47, pp. 691-698.

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