US PATENT SUBCLASS 123 / 230
.~.~.~ Compression volume is also expansion volume

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

200  DF  ROTARY {12}
221  DF  .~ With transfer means intermediate single compression volume means and single expansion volume means {5}
228  DF  .~.~ Compression volume means circumferentially disposed relative to expansion volume means {4}
230.~.~.~ Compression volume is also expansion volume

DEFINITION

Classification: 123/230

Compression volume is also expansion volume:

(under subclass 228) Apparatus wherein the singular space means to pressurize the combustible material acts alternately as the singular space means to receive the combusted material, the combustible material being confined in the transfer means after compression and prior to expansion.