| 摘要 |
The invention relates to a gear train (51, 51') including an arbour (53, 53') a first end of which is fitted with an integral collar (52, 52'), a first wheel set (55, 55') made of micro-machinable material being fitted onto the second end of the arbour (53, 53'). According to the invention, the gear train (51, 51') includes a second wheel set (57, 57') made of micro-machinable material, which is independent of the movements of said first wheel set and which includes an aperture (58, 58') whose wall is mounted opposite said arbour so that the second wheel set (57, 57') is freely mounted on said first end of the arbour (53, 53'). |
