US PATENT SUBCLASS 123 / 90.5
.~.~ Rotation prevention

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

90.1  DF  POPPET VALVE OPERATING MECHANISM {19}
90.48  DF  .~ Tappet {4}
90.5.~.~ Rotation prevention

DEFINITION

Classification: 123/90.5

(under subclass 90.48) Device wherein means provided to restrict the movement of the tappet element to the reciprocatory one intended to be imparted to it by the actuating element (cam).

(1) Note. This provision is most likely to be found where the tappet includes a roller for engagement by the cam.