US PATENT SUBCLASS 15 / 391
.~.~.~.~.~ Belt or drive housings or other protective features

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}
383  DF  .~.~.~ Rotary agitator {6}
389  DF  .~.~.~.~ Drive details {3}
391.~.~.~.~.~ Belt or drive housings or other protective features

DEFINITION

Classification: 15/391

(under subclass 389) Apparatus having means for protecting the driving means such as belts from damage due to contact with the work or to dust, lint, etc.

(1) Note. It is not necessary that the entire run of the belt be protected.