| 摘要 |
The invention system comprises: - a threaded ring 5 mounted on the reversible thread of the armature 2 shaft 1; - a disc brake 12a, 5a, 10, 13 acting on the said ring; - a threaded sleeve 6 mounted on the thread 4 of the armature 2 shaft 1 in a position that leaves a clearance J between the sleeve and the threaded ring; - means for releasing the brake once the ring 5 and sleeve 6 have advanced to the point where the drive pinion 17 can mesh with the large ring gear 24 of the heat engine; - and other means of causing the sleeve 6 to rotate in order to turn the pinion 17. <IMAGE>
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