US PATENT SUBCLASS 159 / 5
FILM TYPE


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

5FILM TYPE {4}
6.1  DF  .~> Centrifugal {1}
7  DF  .~> Moving-film support {1}
11.1  DF  .~> Rotary drum or disk {2}
13.1  DF  .~> Moving film {4}


DEFINITION

Classification: 159/5

(under the class definition) Apparatus especially designed to evaporate a liquid in film or thin layer form.

SEE OR SEARCH CLASS

118, Coating Apparatus, appropriate subclasses for apparatus for applying liquid coating material to work.

202, Distillation: Apparatus,

236, for a still in which the distilland to be vaporized is in a thin film.

203, Distillation: Processes, Separatory, 72, and 89 for a process of introducing the distilland into the vaporization zone by spreading it in a thin film over a surface.

454, Ventilation,

110, 157, 223, 291, 328, and 337 for air-moistening attachments for registers.