US PATENT SUBCLASS 165 / 128
THERMOSYPHONIC FLUE TYPE

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

128THERMOSYPHONIC FLUE TYPE {3}
129  DF  .~> Heating or cooling means within distinct flue forming enclosure
130  DF  .~> Flue formed between facing second fluid containing conduits
131  DF  .~> Flues formed by vertical corrugations of heat transmitter

DEFINITION

Classification: 165/128

(under the class definition) Apparatus in which temperature change caused by the heat exchanger produces flow through a vertically extending passage of the heat exchanger.

SEE OR SEARCH THIS CLASS, SUBCLASS:

104.21, for recirculation, including thermosyphonic, of an intermediate fluid between a heat source and a heat sink.

108, for recirculation, including thermosyphonic, of a heat exchange fluid.

120+, for a mechanical or jet means moving a material through a heat exchanger.

SEE OR SEARCH CLASS 137, Fluid Handling,

564, for a distribution system including a thermosyphonic circulating means.

237, Heating Systems,

60, for a heating system with water circulation of the vapor-lift pump type.