| 摘要 |
A rappelling or abseiling device with a rope guide pulley which is rotationally mounted in a housing and is connected by a toothed wheel to two toothed shafts of centrifugal power shoes provided with brake pads, the brake shoes of at least one of the brakes being provided with an additional pair of brake pads and the brake shoes being maintained in their idle position by an electromagnet and a cooperating counter element.
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