US PATENT SUBCLASS 123 / 221
.~ With transfer means intermediate single compression volume means and single expansion volume means

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

200  DF  ROTARY {12}
221.~ With transfer means intermediate single compression volume means and single expansion volume means {5}
222  DF  .~.~> Isolated charge in movable transfer element
223  DF  .~.~> Reciprocating or oscillating compression volume means {1}
228  DF  .~.~> Compression volume means circumferentially disposed relative to expansion volume means {4}
234  DF  .~.~> Compression volume means axially disposed relative to expansion volume means {4}
239  DF  .~.~> Compression volume means radially disposed relative to expansion volume means {1}

DEFINITION

Classification: 123/221

With transfer means intermediate single compression volume means and single expansion volume means:

(under subclass 200) Apparatus having a singular space means to pressurize the combustible material and a singular space means capable of enlargement to receive the combusted material and with means, located therebetween, to deliver the pressurized combustible material to the receiving space means.

(1) Note. Combustion of the gas mixture may occur in the transfer passage means, in the expansion volume means, or in both.

(2) Note. This subclass and indented subclasses include engines having an unequal number of compression volumes and expansion volume, wherein each compression volume serves only a single expansion volume at any one time.

SEE OR SEARCH CLASS

418, Rotary Expansible Chamber Devices, and appropriate subclasses for similar rotary expansion chamber device.