| 摘要 |
<p>The unit has a snug (3) covering a window (5) and parallel to a plane of a metallic plate while leaving a space separating the plane and a lower part of the snug. The tie point of the snug at the window is situated between a stop and an end of a connection (2) with a distance such that a strip (9) penetrating the window is formed in an end of an extruded bar during the assembly of the bar on the connection. An independent claim is also included for a process of assembling and locking an extruded bar on a connection unit.</p> |
