US PATENT SUBCLASS 474 / 249
.~ Including groove, openings or pockets formed in belt surface and arranged along entire length of belt (e.g., for flexibility, air escape, etc.)

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

237  DF  FRICTION DRIVE BELT {14}
249.~ Including groove, openings or pockets formed in belt surface and arranged along entire length of belt (e.g., for flexibility, air escape, etc.) {2}
250  DF  .~.~> Grooves transversely extending on belt surface {1}
252  DF  .~.~> Groove continuous and longitudinally extending

DEFINITION

Classification: 474/249

Including groove openings or pockets formed in belt surface and arranged along entire length of belt (e.g., for flexibility, air escape, etc.):

(under subclass 237) Subject matter wherein a component providing an otherwise imperforate exposed face of the belt* has a groove, plural grooves, apertures, or depressions formed in such exposed face and arranged in a pattern, or extending, along substantially the entire length of the belt.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204+, for a belt having grooves or openings for intended positive drive engagement with teeth or ridges or a pulley. [figure]