| 摘要 |
Subject: security system fitted on the hinged side of swinging aluminium sashes for protecting these last from forcing by iron bar.Constitution: two &Ggr;-shaped aluminium profiles sliding into the longitudinal recesses 3 of the frame 1 and the longitudinal recesses 4 of the leave 2 and a hook-like protrusion 7 at the other side of the profiles becoming interengaged in case that the hinges are broken upon forcing of the sashes; the foot 9 introduced into the groove, the step 10, and the screws 11 screwed on the longitudinal recesses for improving the fitting of the system.Variant of the invention: position change of the screws or Allen-type screws in use. |
