| 摘要 |
The weight and the spring elements are positioned coaxially with the drive shaft on the end side of the elevating drive disc (3). The weight is in the form of a disc connected by a torsion spring to the end side of the drive shaft (2). The disc has spokes acting as torsion springs and formed by cavities on the disc. An extra weight in the form of a trimming ring on the disc is for fine tuning.
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