US PATENT SUBCLASS 123 / 190.6
.~.~.~ Elongated rotary double-function valve

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

188.1  DF  VALVE {10}
190.1  DF  .~ Rotary {7}
190.4  DF  .~.~ Double function type {4}
190.6.~.~.~ Elongated rotary double-function valve {1}
190.7  DF  .~.~.~.~> Tapered

DEFINITION

Classification: 123/190.6

Elongated rotary double-function valve:

(under subclass 190.4) Apparatus wherein a cross section of the rotary valve perpendicular to its rotational axis is significantly smaller than the dimension of the valve parallel to its rotational axis.