DOOR LOCK Russian patent published in 2007 - IPC E05B17/20 

FIELD: ironmongery, particularly locking devices for door locking in construction and transport.

SUBSTANCE: door lock comprises body, bolt, bit-key mechanism, control rods with hooks transversal to bolt and cooperating thereto during lock opening and closing, as well as bolt blocking means. Bolt blocking means comprises cylinder mechanism with cylindrical core and link, as well as rotary wheel, which blocks bolt and connected with the link. Bolt blocking means is provided with collar secured to the body and enclosing rotary wheel built in the collar so that the wheel is concentric to cylinder mechanism core. Rotary wheel may have cut made at end thereof and adapted to receive the link. Round wall is connected to wheel perimeter and has cut for control rod hook passage during lock opening and closing.

EFFECT: increased lock reliability and improved lock secrecy.

10 dwg