474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
8 | DF | PULLEY WITH BELT-RECEIVING GROOVE FORMED BY DRIVE FACES ON RELATIVELY AXIALLY MOVABLE COAXIAL CONFRONTING MEMBERS (E.G., EXPANSIBLE CONE PULLEY, ETC.) {13} |
17 | DF | .~ Load responsive {2} |
19 | .~.~ Via relatively rotating cam and follower {2} | |
20 | DF | .~.~.~> Including interengaged threads |
21 | DF | .~.~.~> Including plural separate cam and follower pairs for adjusting plural members |