Refrigeration – Low pressure cold trap process and apparatus
Patent
1988-12-15
1991-09-03
Bennet, Henry A.
Refrigeration
Low pressure cold trap process and apparatus
62275, 118 501, B01D 800
Patent
active
050441655
ABSTRACT:
A method and apparatus for ultrarapid cooling of tissue samples against a chilled cryogenic surface. The cryogenic surface is enclosed in a high vacuum chamber during cooling of the cryogenic surface. Dry non-condensable room temperature gas is introduced from an external source to raise the chamber pressure just prior to slamming or plunging a sample against the cryogenic surface. The cryogenic surface is heated for regeneration or cleaning purposes between each successive sample.
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Gibson Frank
Linner John G.
Livesey Stephen A.
Piunno Carmen
Zaltsberg Mark
Bennet Henry A.
Board of Regents The University of Texas
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