| 摘要 |
The mobile comprises a hub ( 1 ) rotating on its axis and a transmission or rolling rim ( 3 ) designed to come into contact with a mobile or fixed component, the hub ( 1 ) and the transmission or rolling rim ( 3 ) being linked by leaves ( 2 ) arranged to allow for the relative movement of the transmission or rolling rim ( 3 ) in relation to the hub ( 1 ) under the spring action of the leaves ( 2 ).
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