(under subclass 272) Apparatus having structure for the transfer of heat to or from exhaust gas or to or from exhaust gas handling structure.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
41.01+, for the cooling of the parts of an internal combustion engine other than the exhaust system; subclasses 434+ for a charge-forming system having means for heating the charge or for a device vaporizing oil to form a charge, for a device vaporizing oil to form a charge; and subclass 142.5 for an internal combustion engine having means using heat from one part to heat another part by exchanging heat between the parts.
126, Stoves and Furnaces,
19.5, for a stove, oven or heating vessel heated by exhaust gas. 165, Heat Exchange,
52, for a heat exchange means for transferring heat from exhaust gas to engine feed structure.
237, Heating Systems,
12.3, for an automobile heated by the exhaust of an engine.
261, Gas and Liquid Contact Apparatus,
145, for a gas-liquid contact engine supply device heated by exhaust gas.
