| 摘要 |
<p>An adjustable control linkage for operating a seal in the bottom of a door has a flexible end piece fitted to the linkage, with the curved end of the end piece striking the door frame, as the door closes, and activating the deployment of the seal. If the seal pressure onto the ground exceeds a preset level the pressure is transmitted back up the linkage and the end of the linkage presses further into the end piece.</p> |
