Refrigeration – Storage of solidified or liquified gas – Including cryostat
Patent
1998-09-30
2000-08-01
Doerrler, William
Refrigeration
Storage of solidified or liquified gas
Including cryostat
62 62, 62381, F25B 1900, F25D 2500
Patent
active
060949236
ABSTRACT:
An apparatus for cryogenically freezing tissue specimens includes a linear motion platform and a pair of rotary motion platforms. The rotary motion platforms can be used alternatively with respect to the linear motion platform and a mechanism is provided to automatically trigger the linear motion platform for movement and to reset the linear motion platform when the rotary motion platforms are placed in covering relationship with or removed from covering relationship with respect to the linear motion platform. Cryogenic fluids are supplied to tissue receiving cryogenic discs on the various platforms through flexible plastic tubing. The tubing that supplies cryogenic fluid to the rotary motion platforms is constructed so as to form a series of loose loops in conjunction with tails that are mounted over a central rod to allow movement at cryogenic temperatures. A rapid frost mechanism nebulizes water and delivers a fine spray across the cryogenic discs associated with the linear motion platform to form a layer of frost on prechilled discs. Specimen receiving plates contact the frost layer to effect accelerated, uniform heat transfer.
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Doerrler William
McMahon John C.
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