A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a lock protection device. The protection device comprises a fixing plate and a protection cover, wherein the protection cover is in rotary connection with the fixing plate through a rotary shaft, the top of the protection cover is a circular-arc face, and sector-shaped faces are arranged on two sides of the protection cover.
The invention discloses a lock protection device. The protection device comprises a fixing plate and a protection cover, wherein the protection cover is in rotary connection with the fixing plate through a rotary shaft, the top of the protection cover is a circular-arc face, and sector-shaped faces are arranged on two sides of the protection cover.
Lock protection device
DING KAI (author)
2015-06-03
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser
Door lock protection device, panel of door lock protection device and door lock system
| European Patent Office | 2024