US PATENT SUBCLASS 123 / 41.69
.~.~ Finned cylinder and/or head

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

41.01  DF  COOLING {27}
41.56  DF  .~ Air-cooled {7}
41.69.~.~ Finned cylinder and/or head

DEFINITION

Classification: 123/41.69

(under subclass 41.56) Subject matter which includes cylinders and/or cylinder heads constructed with various shaped fins to increase the cooling area of the cylinder walls.

SEE OR SEARCH CLASS

165, Heat Exchange,

51, for heat exchange means installed on an engine; subclasses 181+ for a tubular structure with discrete heat transfer means; and subclass 185 for a heat transmitter, per se.