US PATENT SUBCLASS 123 / 546
.~.~ Combustible mixture surrounds heating medium

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
543  DF  .~ Heating of combustible mixture {13}
546.~.~ Combustible mixture surrounds heating medium

DEFINITION

Classification: 123/546

Combustible mixture surrounds heating medium:

(under subclass 543) Subject matter in which a passage or conduit that conveys the air-fuel mixture to the engine completely encircles or surrounds the source of heat.