| 摘要 |
A control device with several stable positions, has a cam and a finger, the finger traveling along a cam track around the cam, when the finger and the cam are moved with respect to one another in translation. The cam track has curvature about an axis of rotation parallel to the axis of the translation to move the finger and the cam in rotation with respect to one another.The finger and the cam each are a cylindrical ring, these two rings being coaxial and capable of a rotational movement with respect to one another, along the axis of rotation.
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