US PATENT SUBCLASS 123 / 41.72
.~ With jacketed head and/or cylinder

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

41.01  DF  COOLING {27}
41.72.~ With jacketed head and/or cylinder {8}
41.73  DF  .~.~> Jet or spray within jacket
41.74  DF  .~.~> Multiple cylinder
41.75  DF  .~.~> Reentrant head
41.76  DF  .~.~> With cooled valve seats or guides {2}
41.79  DF  .~.~> With passages, baffles, etc. {1}
41.81  DF  .~.~> Cylinder jacket supported solely by cylinder
41.82 R  DF  .~.~> With head-cooling arrangements {1}
41.83  DF  .~.~> Cylinder detachable {1}

DEFINITION

Classification: 123/41.72

(under subclass 41.01) Structures comprising an engine part which is immediately connected with the combustion process, as a cylinder wall or head or valve seat jacketed, channeled or constructed to form a passage for a confined coolant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41.34+, for coolant introduction into moving parts.

SEE OR SEARCH CLASS

418, Rotary Expansible Chamber Devices,

83+, for such devices provided with heat exchange means.