| 摘要 |
A BICYCLE CRANK AND CHAIN WHEEL ASSEMBLY ABSTRACT 5 THE PRESENT INVENTION PROVIDES A BICYCLE CRANK AND CHAIN WHEEL ASSEMBLY. THE ASSEMBLY INCLUDES A RING SHAPED CHAIN WHEEL (2) ARRANGED TO ROTATE ABOUT A FIRST AXIS OF ROTATION (8) AND A CAM FOLLOWER (14) EXTENDING OUTWARDLY FROM THE CHAIN WHEEL (2) THERE IS ALSO PROVIDED A PAIR OF OPPOSED CRANKS (10, 12) ARRANGED TO ROTATE ABOUT AN AXLE (15) HAVING A SECOND AXIS OF ROTATION. THE ASSEMBLY ALSO INCLUDES A CAM (16) EXTENDING FROM 10 ONE (1 0) OF THE OPPOSED CRANKS (11 0. 1 2) TO OPERATE THE CAM FOLLOWER (1 4). (FIGURE 1) -D CIO 9 J- AG 10
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