US PATENT SUBCLASS 239 / 416.5
.~.~ Concentric flow paths

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

398  DF  COMBINING OF SEPARATELY SUPPLIED FLUIDS (I.E., PLURAL FLOW PATHS) {9}
407  DF  .~ And valving means controlling flow for combining {5}
416.5.~.~ Concentric flow paths {2}
417  DF  .~.~.~> Relatively movable flow paths
417.3  DF  .~.~.~> Valving means for central fluid

DEFINITION

Classification: 239/416.5

(under subclass 407) Apparatus comprising a plurality of coaxially arranged flow lines with one surrounding the other and means for controlling flow through one of the lines.

SEE OR SEARCH THIS CLASS, SUBCLASS:

416.4, for apparatus comprising a control means for each of a plurality of different fluids, at least one of the control means comprising flow lines which are coaxially arranged, one surrounding the other and the member controlling fluid flow being in one of the lines.