US PATENT SUBCLASS 15 / 50.3
.~.~.~.~ Cylindrical brush

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

3  DF  MACHINES {11}
21.1  DF  .~ Brushing {18}
49.1  DF  .~.~ Floor and wall cleaner {3}
50.1  DF  .~.~.~ Scrubber {4}
50.3.~.~.~.~ Cylindrical brush

DEFINITION

Classification: 15/50.3

Cylindrical brush:

(under subclass 50.1) Subject matter wherein the working surface of the brush coincides with a surface of revolution generated by the rotation of a straight line about an axis parallel thereto.

(1) Note. The "working surface" of the brush is an imaginary brush-enveloping smooth surface defined by and encompassing all of the work-engaging end-points of the bristles of the brush.