| 摘要 |
<p>The nut is noteworthy for combining a sliding block (1) with a tapped sleeve (19) on which the block rests via a thrust ball bearing (22); said bearing and, since it rests on it, the sliding block are selectively engaged by coupling and uncoupling means (35, 36) through an intermediate coaxial part (20) for coupling and uncoupling axial movements under the action of said coupling and uncoupling means (35, 36). …<IMAGE>… </p> |
