PROTECTIVE ARMOR COVERING PLATE FOR CYLINDER LOCK Russian patent published in 2006 - IPC E05B17/14 

FIELD: ironmongery, particularly protective means for locks.

SUBSTANCE: covering plate comprises outer member, which closes access to cylinder mechanism. Outer member comprises key hole and protective case to be fastened to door. The outer member is provided with cavity for protective case receiving. The protective case comprises orifices for protective case fastening to door. Cylinder mechanism is arranged in the protective case. Arch-shaped armor panel and arch-shaped electric signaling means board having leads are located between outer member and protective case. The armor panel is arranged between electric board and case and closes orifices adapted for case connection to door.

EFFECT: increased resistance to breaking-in.

2 cl, 3 dwg