Stable and precise cryogenic device

Details Stable and precise cryogenic device Stable and precise cryogenic device

1980-06-27

1982-02-09

Capossela, Ronald C.

Refrigeration

Refrigeration producer

Evaporator, e.g., heat exchanger

62 78, 165 30, F25D 1900

Patent

active

043144594

ABSTRACT:
A cryogenic cooler, e.g. for medical specimen or other samples or materials to be brought to temperatures below 0.degree. C., comprises a stable and precise cryogenic device in which a liquefied gas is continuously vaporized in the absence of a free surface of a bath of the liquid, the vessel being a Dewar receptacle open to the atmosphere whereby a slight atmospheric pressure excludes moisture-carrying air and thus prevents ice deposits in the vessel or on the sample.

REFERENCES:
patent: 2988898 (1961-06-01), Hesson et al.
patent: 3195620 (1965-07-01), Steinhardt, Jr.
patent: 3305000 (1967-02-01), Bullen et al.
patent: 3410110 (1968-11-01), Hoyes
patent: 3447333 (1969-06-01), Goodstein
patent: 3894403 (1975-07-01), Longsworth
patent: 3938346 (1976-02-01), Ovchinnikov et al.
patent: 4030314 (1977-06-01), Strehler et al.
patent: 4107937 (1978-08-01), Chmiel
patent: 4232453 (1980-11-01), Edelmann

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