US PATENT SUBCLASS 15 / 342
.~.~.~ Rotary air impeller

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

3  DF  MACHINES {11}
300.1  DF  .~ With air blast or suction {26}
341  DF  .~.~ Traction or manual operation of air pump or fan {1}
342.~.~.~ Rotary air impeller {1}
343  DF  .~.~.~.~> Hand cranked

DEFINITION

Classification: 15/342

(under subclass 341) Apparatus in which the air pump is a rotary air impeller.

(1) Note. Many of these devices include one-way drive means to permit continuous rotation of the impeller while the cleaner is moved forward and backward over the work surface.