| 摘要 |
The invention relates to a three-jaw gripper, each of the jaws being formed by the end of an arm 8, 9, 32 articulated to a fork-shaped support 2 and securely fastened to control levers 12, 13, 24 respectively. The control levers 12, 13 are articulated to the body 26 of a floating jack and with this jack form a deformable parallelogram whilst the lever 24 is hitched to the rod 17 of the jack. A set of equal gears bonded to the articulations of the arms 9 and 32 and meshing with one another makes it possible to synchronise the movements. <IMAGE>
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