US PATENT SUBCLASS 123 / 90.32
.~ With alternate interruption of drive train

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

90.1  DF  POPPET VALVE OPERATING MECHANISM {19}
90.32.~ With alternate interruption of drive train

DEFINITION

Classification: 123/90.32

(under subclass 90.1) Device wherein means is provided in an element (e.g., push rod, tappet, etc.), between the cam and the valve rendering that element ineffective--and interrupting the valve actuation--during alternate revolutions of the crankshaft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

90.31, for a cam that is driven in such fashion as to produce alternate interruption of actuation.