US PATENT SUBCLASS 15 / 318
.~.~.~.~ Moving nozzle with air supply control interlocked with nozzle motion means

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}
301  DF  .~.~ Fixed position cleaners or installed cleaning systems {6}
316.1  DF  .~.~.~ Air blast only (e.g., boiler soot-blower) {3}
318.~.~.~.~ Moving nozzle with air supply control interlocked with nozzle motion means

DEFINITION

Classification: 15/318

(under subclass 316) Apparatus in which the blower element is movable and the fluid supply control is interlocked therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

317, for blowers movable to blowing position from an embedded, retracted, or protected nonblowing position in which the means for operating the fluid supply valve in interlocked with the means for projecting and retracting the blowing nozzle.