| 摘要 |
A load applying device includes a rotary member rotatably supported on a base with a spindle, and a magnetic device adjustable concentrically relative to the rotary member, to adjust and to apply a retarding force against the rotary member. A lever may support the magnetic device, and has a curvature corresponding to that of the rotary member. The base includes a casing having two grooves for slidably receiving fasteners which may be threaded to the lever, for guiding the lever to move relative to the casing and the rotary member. Two blocks are engaged with the lever, and a moving device may move the blocks toward and away from each other, to adjust the lever relative to the rotary member.
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