| 摘要 |
<p>The metal profiled component (7) has a hooked portion (23), by which it fits over one edge (24) of the cross-beam (5), and a leaf spring (17) by which is enclosed another edge. The spring must be distorted to bring it into the working position, in which a portion of it (22) bears against the beam. This portion has a hook end (21) by which it fits round the beam edge. The spring and the seat can be secured to the metal component by common fixing devices (15).</p> |
