US PATENT SUBCLASS 123 / 90.54
.~.~.~.~ Screw

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

90.1  DF  POPPET VALVE OPERATING MECHANISM {19}
90.48  DF  .~ Tappet {4}
90.52  DF  .~.~ Lash adjustment {1}
90.53  DF  .~.~.~ Self-operating {2}
90.54.~.~.~.~ Screw

DEFINITION

Classification: 123/90.54

(under subclass 90.53) Device wherein the self-operating adjusting means is of the mechanical screw type.