| 摘要 |
<p>Brackets (5,6) each have coupling bushes (12) that support cross-bracing (8) for leg elements (3,4) with rotating motion and on-axis slide. With a torque-proof spring-loaded link to the cross-bracing, a linkage sleeve (13) inserts into a coupling bush and is removed from it by sliding the cross-bracing along an axis (X).</p> |
