| 摘要 |
<p>A support has at least one retention fin that defines the maximum separation between the chassis and support. A fixed top is configured for turning of a regulation screw such that the chassis and support are blocked without possibility of mutual displacement during storage and transport of the rail before assembly in the door. A threaded wheel and a support are arranged in parallel and connected for longitudinal movement perpendicular to the spin axis of the wheel along a guide comprised of ties and channels. An adjustable top includes the regulation screw and a nut, with the screw extending longitudinally from the support towards the fixed top which is formed in the chassis to define the maximum longitudinal approach between the chassis and support.</p> |
