| 摘要 |
<p>The profile that forms the moving frame (2) has a portion or zone (2d) that is tapered by a curved wall (2e). The convex surface is turned towards the outside, and acts as a stop for a dressing seal (6). The profile (1) forming the fixed frame has a wall (1a) that forms the exterior cover strip between the fixed and moving frame. This wall partially overlaps the tapered zone (2d) of the other profile and has a thickness that stretches from the exterior edge towards the junction zone of the edge with the tubular part of the moving frame.</p> |
