US PATENT SUBCLASS 239 / 300
.~ Adjustable gas flow directing or controlling means

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

290  DF  INCLUDING SUPPLEMENTAL GAS SHAPING OR SHIELDING JET {8}
300.~ Adjustable gas flow directing or controlling means {1}
301  DF  .~.~> Rotatable port-carrying member effects flow control

DEFINITION

Classification: 239/300

(under subclass 290) Apparatus in which there is provided means (1) to variously direct or position the jet orifice carrying member, or (2) to variably restrict flow of gas through the port as by valving means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

292, for means adjusting the point of convergence of two streams along the axis of discharge.