US PATENT SUBCLASS 165 / 89
.~ Rotary drum


Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

86  DF  MOVABLE HEATING OR COOLING SURFACE {4}
89.~ Rotary drum {1}
90  DF  .~.~> With means applying fluids for exchange through drum wall {1}


DEFINITION

Classification: 165/89

(under subclass 86) Apparatus in which the movable heat transfer surface means comprises a part of a wall of a cylindrical tank device mounted for rotation about the axis of the cylinder.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

108+, for a rotary drum type drier.

62, Refrigeration,

346, for a rotary drum type material concealer. 72, Metal Deforming,

69, 128, 200+, 286, 342, and 364 for a process or apparatus for modifying or maintaining the temperature of a machine or a metal workpiece in connection with deformation of the workpiece.

159, Concentrating Evaporators,

11, for a film type concentrating evaporator having a rotary drum or disc.

432, Heating,

103+, for a tumbler type rotary drum including a heat generator, or otherwise specialized to the application of heat to work material.

492, Roll or Roller,

46, for a roll, per se, not elsewhere provided for, having heating, cooling or heat transfer means.