| 摘要 |
A timepiece wheel set with a unidirectional wheel including an arbor carrying a pinion and at least a first wheel that is coaxial with the pinion and pivotally mounted on the arbor. The first wheel is connected to the arbor by a first spring, which exerts a friction force on the first wheel. The wheel set also includes a second wheel pivotally mounted on the arbor, and connected to the arbor by a second spring, which exert a friction force on the second wheel. |
