US PATENT SUBCLASS 239 / 533.4
.~.~.~ With means to vary or pulse flow within engine cycle

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

533.1  DF  FLUID PRESSURE RESPONSIVE DISCHARGE MODIFIER* OR FLOW REGULATOR* {3}
533.2  DF  .~ Fuel injector or burner {1}
533.3  DF  .~.~ Having flow regulator* for reciprocating piston engine {7}
533.4.~.~.~ With means to vary or pulse flow within engine cycle {1}
533.5  DF  .~.~.~.~> Upstream of flow regulator*

DEFINITION

Classification: 239/533.4

(under subclass 533.3) Device having additional means to (1) alter or vary the amount of discharge automatically within a single engine cycle, (2) provide multiple, discrete discharges within a single engine cycle, or (3) any combination of (1) and (2) above.