US PATENT SUBCLASS 123 / 190.2
.~.~ Single function, (i.e., exhaust and intake by separate tube)

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

188.1  DF  VALVE {10}
190.1  DF  .~ Rotary {7}
190.2.~.~ Single function, (i.e., exhaust and intake by separate tube)

DEFINITION

Classification: 123/190.2

Single function, (i.e., exhaust and intake by separate tube):

(under subclass 190.1) Apparatus wherein the rotary valve moves between individual distinct ducts.