US PATENT SUBCLASS 123 / 41.31
.~ With cooling of additional parts or materials

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

41.01  DF  COOLING {27}
41.31.~ With cooling of additional parts or materials {2}
41.32  DF  .~.~> With spark plug heat exchange
41.33  DF  .~.~> With lubricant heat exchange

DEFINITION

Classification: 123/41.31

(under subclass 41.01) Cooling systems with means for cooling such additional elements as spark plugs, exhaust manifolds, plural manifolds for both intake and exhaust, bearings, guides, transmissions, etc., or means for cooling substances such as exhaust gases, etc., together with the cooling of (1) the cylinder, (2) piston or (3) valves, or any combination thereof.

(1) Note. Where the claims include exhaust manifold cooling with no detailed engine cooling, the patent belongs in Class 60, Power Plants, subclass 321, unless the exhaust gases are diverted to the engine, in which case the patent belongs in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

434+, and especially subclasses 543+, for inlet manifold cooling or heating.