US PATENT SUBCLASS 239 / 469
.~.~.~ Having a central post-like member

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

461  DF  FLOW DEFLECTING OR ROTATION CONTROLLING MEANS {9}
463  DF  .~ Fluid rotation inducing means upstream of outlet {12}
468  DF  .~.~ Whirl chamber transversely offset to single inflow path (i.e., tangential inflow) {2}
469.~.~.~ Having a central post-like member {1}
470  DF  .~.~.~.~> And flow passage in post

DEFINITION

Classification: 239/469

(under subclass 468) Apparatus in which the whirl chamber is provided with a central protuberance extending towards the egress opening and about which the fluid rotates.