US PATENT SUBCLASS 123 / 41.38
.~.~.~.~ Wrist pin type; e.g., nonrigidly connected

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}
41.35  DF  .~.~ Piston {3}
41.37  DF  .~.~.~ Hollow piston rod {1}
41.38.~.~.~.~ Wrist pin type; e.g., nonrigidly connected

DEFINITION

Classification: 123/41.38

(under subclass 41.37) Cooling means wherein the hollow piston rod is pivotally or otherwise nonrigidly connected with the piston to permit said rod to swing.