US PATENT SUBCLASS 159 / 22
CLOSED EVAPORATING CHAMBERS

Current as of: June, 1999
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159 /   HD   CONCENTRATING EVAPORATORS

22CLOSED EVAPORATING CHAMBERS {4}
23  DF  .~> Indirectly heated {4}
29  DF  .~> Directly heated
30  DF  .~> Samplers
31  DF  .~> Liquid traps or separators

DEFINITION

Classification: 159/22

(under the class definition) Vessels provided with covers adapted to close the surface of the evaporating liquid from the atmosphere.

SEE OR SEARCH CLASS

62, Refrigeration,

100, 169+, and 268+ for processes and apparatus utilizing vacuum to cool a product.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

198+, and 285+ for similar devices specialized to chemistry.