US PATENT SUBCLASS 474 / 73
.~ Including separate belt on each of coaxial pulleys selectively engaged in drive train

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

69  DF  CONTROL FOR VARIABLE INPUT TO OUTPUT SPEED-RATIO {7}
73.~ Including separate belt on each of coaxial pulleys selectively engaged in drive train {3}
74  DF  .~.~> With overrunning clutch
75  DF  .~.~> Selection by tightening belt on selected pulley
76  DF  .~.~> Selection by axially movable pin engaged in opening through selected pulley

DEFINITION

Classification: 474/73

Including separate belt on each of coaxial pulleys selectively engaged in drive train:

(under subclass 69) Subject matter including plural pulleys* mounted for rotation about a common axis, each of said pulleys having its own belt* in driving engagement therewith so that the belts provide parallel drive paths between the input and output members, and said mechanism including means permitting operator selection as to which drive path is active to drive the output member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4+, for a forward and reverse drive arrangement using plural belts.

84+, for a belt and pulley drive including a plurality of separate belts. [figure]