US PATENT SUBCLASS 474 / 157
.~.~.~.~ And each link has integral surfaces forming inwardly opening groove

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

152  DF  POSITIVE DRIVE PULLEY OR GUIDE ROLL {6}
153  DF  .~ With particular belt {2}
155  DF  .~.~ Belt formed of rigid links {1}
156  DF  .~.~.~ With sequential links pivoted about discrete pivot pin {1}
157.~.~.~.~ And each link has integral surfaces forming inwardly opening groove

DEFINITION

Classification: 474/157

And each link has integral surfaces forming inwardly opening groove:

(under subclass 156) Subject matter wherein each of the inflexible components is a unitary member having side walls spaced from each other in the direction of the longitudinal extent of the belt*, said side walls being interconnected by a top wall to define a cavity opening inwardly toward the drive face of the pulley* or guide roll* to receive a pulley or guide roll ridge or tooth.

SEE OR SEARCH THIS CLASS, SUBCLASS:

212+, for a belt, per se, having integral surfaces forming an inwardly opening groove. [figure]