US PATENT SUBCLASS 239 / 497
.~.~.~.~ Multiple angular passages through disc

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}
491  DF  .~.~ Apertured cap surmounts whirler organization {3}
494  DF  .~.~.~ Whirler is slotted or apertured flat disc or plate {3}
497.~.~.~.~ Multiple angular passages through disc

DEFINITION

Classification: 239/497

(under subclass 494) Apparatus comprising a plurality of flow paths relatively inclined to the longitudinal axis and extending entirely through the flat, relatively thin member.

(1) Note. The passages must pass through and be completely surrounded by the member material; those passages which are formed in part by slots or grooves cut in the edge of the member and in part by the flow conduit will be found in subclass 494.

SEE OR SEARCH THIS CLASS, SUBCLASS:

473, for other devices having a whirler disc with angular passages therethrough and a centrally valved port.

494, in which the whirl passages are formed in the disc or plate member but not necessarily entirely surrounded by the material of the member.

548+, for plural outlets not specifically arranged to cause spinning or swirling of the fluid.