| 摘要 |
Abstract 5 A screen assembly comprising a sheet of mesh material having edges received in slots in a frame. The mesh has a portion adjacent the edge folded back such that the edge portion is generally parallel to the main body of the sheet. An protrusion is provided extending inwardly from on a first side of the slot and a wedge member is provided to be received between the mesh 10 material and a second side of the slot such that the mesh material is engaged by the wedge member. When sufficient force is applied to the mesh material to cause movement of the mesh outwardly of the slot, the folded edge portion engages with the protrusion on the first side of the slot. |
