Refrigeration – Low pressure cold trap process and apparatus
Patent
1981-02-17
1982-06-29
Capossela, Ronald C.
Refrigeration
Low pressure cold trap process and apparatus
62268, 55269, 417901, B01D 800
Patent
active
043366902
ABSTRACT:
Two stage cryogenic pump having axially spaced baffle members for shielding the second stage from external thermal radiation while permitting substantially unimpeded gas flow from the inlet opening to the second stage.
REFERENCES:
patent: 3282058 (1966-11-01), Venema et al.
patent: 3579997 (1971-05-01), Rapinat
patent: 3579998 (1971-05-01), Thibault et al.
patent: 4121430 (1978-10-01), Bachler et al.
patent: 4150549 (1979-04-01), Longsworth
Capossela Ronald C.
Cole Stanley Z.
Herbert Leon F.
Varian Associates Inc.
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