US PATENT SUBCLASS 60 / 729
.~.~.~ Reciprocating positive displacement type

Current as of: June, 1999
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60 /   HD   POWER PLANTS

39.01  DF  COMBUSTION PRODUCTS USED AS MOTIVE FLUID {31}
722  DF  .~ Combustion products generator {14}
726  DF  .~.~ With means to pressurize oxidizer for combustion or other purposes {3}
729.~.~.~ Reciprocating positive displacement type

DEFINITION

Classification: 60/729

Reciprocating positive displacement type:

(under subclass 726) Device wherein the means placing the oxidizer under pressure comprises a contractible chamber formed by the reciprocation of a portion of said chamber relative to another portion of said chamber.