US PATENT SUBCLASS 474 / 93
FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.)


Current as of: June, 1999
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474 /   HD   ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

93FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.)


DEFINITION

Classification: 474/93

FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.):

(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]