US PATENT SUBCLASS 474 / 149
.~ Positive drive pulley and friction drive pulley connected by same belt

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

148  DF  SYSTEM INCLUDING SPACED PULLEYS INTERCONNECTED BY A BELT {2}
149.~ Positive drive pulley and friction drive pulley connected by same belt

DEFINITION

Classification: 474/149

Positive drive pulley and friction drive pulley connected by same belt:

(under subclass 148) Subject matter wherein one of said pulleys* has a drive face formed by circumferentially spaced, radially extending teeth or ridges for driving engagement with radially extending surfaces correspondingly spaced along the length of the belt*, and the other of said pulleys has a drive face including a surface for driving engagement with the same belt by frictional contact with the belt. [figure]