| 摘要 |
Collar which comprises: two clamps 2, 4 with flanges 8 which have holes 10 for screws 14 with a prismatic head 16. Each flange 8 of a clamp 2 has a stop 18 which has a surface 20 suitable for being arranged in contact with one of the lateral faces 22 of the prismatic head 16 of the screw 14. In addition, an elastic ring 24 is fitted around the screw 14, causing it to be retained in the flange. <IMAGE>
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