482 / | HD | EXERCISE DEVICES |
51 | DF | INVOLVING USER TRANSLATION OR PHYSICAL SIMULATION THEREOF {13} |
57 | DF | .~ Bicylcling {5} |
63 | .~.~ Utilizing specific resistance generating structure {2} | |
64 | DF | .~.~.~> Flywheel with braking band |
65 | DF | .~.~.~> Wheel with edge engaging braking roller |