DOOR LOCK Russian patent published in 2005 - IPC

FIELD: ironmongery, particularly door locks.

SUBSTANCE: door lock comprises cross-bar with pin, U-shaped restraining plate, lid with cylinder mechanism, handle with gripping part and covering member. Lock is provided with blocking means arranged above the retaining plate, which comprises spring-loaded rod to cooperate with the restraining plate. The rod is formed as rectangular plate with side rectangular extensions made in lower part thereof to cooperate with spring, body and lid, and rectangular cut to provide cooperation between rod and cross-bar pin. Partition with slot is fixedly secured inside the body above restraining plate in upper part thereof. The partition is spaced a distance greater than sum of travel thereof and compressed spring length. The slot is symmetric about vertical body axis and cooperates with rod. Lock also has parallel ribs fixedly secured in lower partition part and adapted to secure spring.

EFFECT: increased resistance to unauthorized unlocking.

17 dwg