US PATENT SUBCLASS 123 / 41.41
.~.~ Poppet-type valves

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

41.01  DF  COOLING {27}
41.34  DF  .~ Internal cooling of moving parts; e.g., hollow valves, pistons, and movable cylinder {3}
41.41.~.~ Poppet-type valves

DEFINITION

Classification: 123/41.41

(under subclass 41.34) Cooling means wherein the movable element cooled is a poppet type valve.