US PATENT SUBCLASS 123 / 238
.~.~.~ Interengaging rotors

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}
234  DF  .~.~ Compression volume means axially disposed relative to expansion volume means {4}
238.~.~.~ Interengaging rotors

DEFINITION

Classification: 123/238

Interengaging rotors:

(under subclass 234) Apparatus wherein the means to receive the combusted material is formed in part by a seal produced by the engagement of a rotatable element structure with the periphery of the piston structure.

SEE OR SEARCH CLASS

418, Rotary Expansible Chamber Devices,

191+, for gear-type rotary chamber devices.