| 摘要 |
<p>An exercise device has two handles between which a flywheel is suspended on a cord. By twisting the cord and repeatedly pulling on the handles, the flywheel is caused to rotate about its axis of rotation. The cord passes through two passages formed in the flywheel. The latter is a solid body which is pierced only by the passages. The passages run obliquely inclined with respect to the axis of rotation. The friction between the cord and the wall(s) of the passages is increased when the handles are pulled apart and, as a result, the flywheel is prevented from sliding along the rope, for instance downwardly when the exercise device is used vertically.</p> |
