| 摘要 |
The ends of the limiting arms (2) have laterally extending plate-like projections (3) which in the usage position are located in a plane parallel to that of the plug part. They prevent the plug from tilting when being installed in a hole or hollow space, and restrict its position to a predetermined depth. The limiting arms (2), when the plug is fitted, are pivoted to a location at right-angles to the plane of the plug part (1). The plug is a part of formed by at least two such items (A,B,...), the series being connectable to one another by a union piece (4) between at least two limiting arms (2) belonging to plugs fitted widthways to one another. |
