Apparatus for cryogenic freezing of fluid filled pouches

Details Apparatus for cryogenic freezing of fluid filled pouches Apparatus for cryogenic freezing of fluid filled pouches

1971-08-30

1976-04-27

O'Dea, William F.

Refrigeration

Hand manipulable tool

62341, 62371, 62373, 62457, 128 1R, 195 18, 206 84, 220 17, 249127, 426524, F25D 310

Patent

active

039525368

ABSTRACT:
Viable fluids such as blood components are rapidly frozen in plastic or the like pouches for transportation and/or storage by placing a flat pouch slack filled with fluid between two substantially planar parallel restraining surfaces such as metal plates of greater perimeter than the flattened slack filled pouch which are rigid enough to prevent sagging of the pouch when it is vertically disposed and flexible enough to accommodate expansion of the pouch flat sides during the freezing operation. The restraining surfaces are retained against separation by retaining means applied against at least a portion of the outer surfaces of each pouch restraining means and the entire assembly is immersed in a cryogenic medium to rapidly freeze the fluid.

REFERENCES:
patent: 2260450 (1941-10-01), Guinane
patent: 2964920 (1960-12-01), Staebler
patent: 2968568 (1961-01-01), Preuss
patent: 3576650 (1971-04-01), Underwood et al.
patent: 3683635 (1972-08-01), Campanelli

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