US PATENT SUBCLASS 159 / 13.1
.~ Moving film

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

5  DF  FILM TYPE {4}
13.1.~ Moving film {4}
13.2  DF  .~.~> Contacting tube {1}
13.4  DF  .~.~> With gas wiping
14  DF  .~.~> Climbing
15  DF  .~.~> Zigzag

DEFINITION

Classification: 159/13.1

Moving film:

(under subclass 5) Apparatus adapted to maintain the liquid to be concentrated in a moving film.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

39, for boilers in which liquid flows over the heating surface in a thin stream.

165, Heat Exchange,

115+, for a trickler-type heat exchanger of general utility.

261, Gas and Liquid Contact Apparatus,

75+, for devices for contact gases and liquids.