US PATENT SUBCLASS 239 / 494
.~.~.~ Whirler is slotted or apertured flat disc or plate

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.~.~.~ Whirler is slotted or apertured flat disc or plate {3}
495  DF  .~.~.~.~> Deformed plate
496  DF  .~.~.~.~> Slot in disc face
497  DF  .~.~.~.~> Multiple angular passages through disc

DEFINITION

Classification: 239/494

(under subclass 491) Apparatus in which the passages causing the fluid to spin or rotate are formed in a member which is flat and relatively thin.

SEE OR SEARCH THIS CLASS, SUBCLASS:

488, for whirlers having helical passages formed in nondisc-like members or those having substantial axial length.

497, for those devices in which the whirler paths are formed by passages extending completely through and are entirely surrounded by some portion of the disc or plate member.