| 摘要 |
The invention relates to a device for blocking protective shutters for apertures in walls. It will be used particularly in building during the use of shutters protecting doors or windows. The device 7 for blocking protective shutters 2 for apertures in walls, especially for roller shutters consisting of a curtain 4 sliding in a fixed frame 5 in the wall aperture and capable of being rolled round a receiving drum, is characterised in that it comprises locking means laid permanently onto the curtain 4 by elastic means separate from the protective shutter 2 and fastened in the vicinity of the fixed frame 5, to prevent the actuation of the protective curtain 4. <IMAGE>
|
