US PATENT SUBCLASS 123 / 184.51
.~.~ Adjustable plenum

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

184.21  DF  INTAKE MANIFOLD {8}
184.47  DF  .~ Manifold having plenum {2}
184.51.~.~ Adjustable plenum

DEFINITION

Classification: 123/184.51

Adjustable plenum:

(under subclass 184.47) Intake manifold wherein the volume of the plenum chamber is variably controlled.