US PATENT SUBCLASS 165 / 108
RECIRCULATION
Current as of: June, 1999
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DEFINITION
Classification: 165/108
(under the class definition) Apparatus including means providing for flow of exchange fluid in a delineated path from the discharge of a heat exchange zone back to the inlet of the zone.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104.11, for an intermediate retained fluent material forming a part of the apparatus recycling in a flow path to transfer
heat receiving zone.
SEE OR SEARCH CLASS
62, Refrigeration,
376, for refrigerating apparatus with liquid contacting a discrete commodity with means for recirculating the liquid. 122, Liquid Heaters and Vaporizers,
406+, for a closed liquid heater with circulation means.
126, Stoves and Furnaces,
387, for an open liquid heater with a heat type circulator or agitator.
