US PATENT SUBCLASS 123 / 90.42
.~.~.~ Rotation prevention

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

90.1  DF  POPPET VALVE OPERATING MECHANISM {19}
90.39  DF  .~ Rocker {5}
90.41  DF  .~.~ Individually fulcrumed {2}
90.42.~.~.~ Rotation prevention

DEFINITION

Classification: 123/90.42

(under subclass 90.41) Device wherein means is provided to restrict the pivotal movement of a rocker element to a plane defined by the pivot and by the stem of the valve which the rocker element engages.