(under the class definition) Subject matter wherein significance is attributed to an auxillary device used in combination with a belt* and pulley* drive train, or to a particular surface configuration of a belt or pulley; which auxiliary device or particular surface configuration is for inducing the flow of a fluid, such as air, within, through, or around a belt or pulley.
(1) Note. For a patent to be classified herein, the structure must be for inducing the flow of a fluid such a with the use of flow-directing vanes. If the structure merely provides air-escape openings or grooves in a belt or pulley, classification is in an appropriate belt or pulley subcombination subclass below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
185+, for a pulley having discrete circumferentially spaced drive faces, and see (1) Note above.
188+, for a pulley having grooves or openings in a cyclindrical drive face, and see (1) Note above.
249+, for a friction drive belt having nondriving grooves or depressions, and see (1) Note above. [figure]
