Cryogenic storage device
OwnerJohn G. Brothersinventor
Life of this patent
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Abstract
A cryogenic storage device is disclosed having a tank with an open top and a wall which defines an interior chamber adapted to receive biological specimens. A fluid reservoir is disposed around at least a portion of the wall on an outer surface of the wall and this fluid reservoir receives a liquefied gaseous material, such as liquid nitrogen. The source of the liquid gaseous material is fluidly connected through a valve to the reservoir to maintain the level of the liquefied gaseous material between preset limits in the reservoir thus cooling the interior of the interior chamber and any biological specimens contained within the interior of the chamber.
Claims10
A cryogenic storage device comprising
- a tank having an open top, a bottom and a wall which define an interior chamber adapted to receive biological specimens,
- a fluid reservoir disposed around an outer surface of said wall and said bottom, an upper end of said reservoir terminating at said open top of said tank, said reservoir adapted to receive a liquefied gaseous material,
- a source of liquefied gaseous material,
- means for selectively fluidly connecting said source of liquefied gaseous material to said reservoir so that liquefied gaseous material flows from said source and substantially fills said reservoir
- wherein thermal conduction through said wall cools said specimens in said tank chamber.
Dependencies are inferred from the claim text.