US PATENT SUBCLASS 15 / 48.1
.~.~.~.~ Unidirectional drive

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}
40  DF  .~.~ Flexible-fabric cleaners {1}
41.1  DF  .~.~.~ Carpet sweeper {9}
48.1.~.~.~.~ Unidirectional drive

DEFINITION

Classification: 15/48.1

Unidirectional drive:

(under subclass 41.1) Subject matter wherein the brush is rotated by a carpet-engaging wheel, and having means permitting the brush to be rotated in only one direction (clockwise or counterclockwise) despite reverses in the direction of rotation of the carpet-engaging wheel.