US PATENT SUBCLASS 15 / 375
.~.~.~ With auxiliary ambient air inlet to nozzle, e.g., through air tunnel and/or agitator

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

3  DF  MACHINES {11}
300.1  DF  .~ With air blast or suction {26}
363  DF  .~.~ With mechanical agitating means {12}
375.~.~.~ With auxiliary ambient air inlet to nozzle, e.g., through air tunnel and/or agitator {1}
376  DF  .~.~.~.~> Agitator bearing or drive air bleed

DEFINITION

Classification: 15/375

(under subclass 363) Apparatus having air inlet means functioning to admit ambient air to the nozzle when the nozzle is in normal operating position with respect to the work, the additional air being other than that drawn through the work at the nozzle or drawn through the space between the work and the nozzle lips.

(1) Note. The auxiliary air inlet generally functions to supply a quantity of air for moving the dirt dislodged by the agitator particularly when the main air draft through the nozzle mouth is severely reduced by sealing contact of the nozzle mouth with relatively nonporous work.

(2) Note. The auxiliary air may function to operate air-driven turbines or the like.

SEE OR SEARCH THIS CLASS, SUBCLASS:

421, for auxiliary air inlets to nozzles having no agitating means.