DOOR LOCK Russian patent published in 1995 - IPC

FIELD: door and safe locking. SUBSTANCE: door lock has body, cross-bar, set of spring-loaded levers and key with bit. Each lever has stepped recess symmetrical relative to horizontal axis for receiving cross-bar post. Each lever is assembled of two parts interconnected by flat springs. Split plane of levers passes along recess axis. Lever springs are located on the ends of recess and secured with their ends to ends of connected parts. Compression force of springs connecting lever parts exceeds that of lever springs by 2-3 times. EFFECT: higher efficiency. 5 dwg