US PATENT SUBCLASS 123 / 184.56
.~.~ Adjustable cross section passage

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

184.21  DF  INTAKE MANIFOLD {8}
184.53  DF  .~ Manifold tuning, balancing or pressure regulating means {6}
184.56.~.~ Adjustable cross section passage

DEFINITION

Classification: 123/184.56

Adjustable cross section passage:

(under subclass 184.53) Intake manifold including a means for

reversibly blocking a portion of the flow path of the working fluid.