| 摘要 |
The invention relates to a security device intended for rendering shutters, doors or panels burglarproof. This security device consists of a collar 3d obtained by caulking the edges of the end of one non-cut-out part 3b of the shank nut 3; this has the effect of securely fastening the nut to the hinge 2 and making rotation impossible. Main applications: fastening hinges, hinge pins and closure systems on doors, shutters or panels. <IMAGE> |
