US PATENT SUBCLASS 239 / 416
.~.~.~ Relatively movable concentric flow paths effect valving

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}
413  DF  .~.~ Valving means for each of diverse fluids {5}
416.~.~.~ Relatively movable concentric flow paths effect valving

DEFINITION

Classification: 239/416

(under subclass 413) Apparatus having flow lines coaxially arranged, one surrounding the other, movement of the flow line means, one with respect to the other controlling each of the fluids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

214.19, for relatively axially movable concentric flow paths for controlling the flow of one or more of a plurality of separate fluid streams for commingling thereof, at least one of said concentric flow paths rotating continuously around the flow axis.