US PATENT SUBCLASS 123 / 90.25
.~.~ By valve-opening rocker

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

90.1  DF  POPPET VALVE OPERATING MECHANISM {19}
90.24  DF  .~ Valve driven closed {2}
90.25.~.~ By valve-opening rocker

DEFINITION

Classification: 123/90.25

(under subclass 90.24) Device wherein the driving means is the rocker that opens the valve.