| 摘要 |
A magnetic load applying device includes a plate secured on a spindle, and a rotating disc rotatably secured on the spindle and having a peripheral fence engaged on the plate. One or more arms each supports one or more magnets and each has one end rotatably secured to the plate for moving the magnets toward and away from the peripheral fence of the rotating disc and for adjusting the brake torque of the magnets applied onto the rotating disc. One or more springs may bias the arms and the magnets toward the peripheral fence of the rotating disc.
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