US PATENT SUBCLASS 123 / 212
.~ With plural compression volume means

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

200  DF  ROTARY {12}
212.~ With plural compression volume means {1}
213  DF  .~.~> In series

DEFINITION

Classification: 123/212

With plural compression volume means:

(under subclass 200) Apparatus provided with a plurality of means to pressurize and deliver air or combustible material to the enclosed space.

(1) Note. The volume designated for compressing the air or combustible material inherent in the operating cycle of most rotary piston engines is included as one of the compression volume means for this subclass.