DOOR LOCK Russian patent published in 2003 - IPC

FIELD: hardware. SUBSTANCE: door lock has two spring-loaded cross bars, body with keyhole for pressure key, cross bar displacement limiters in form of longitudinal recesses in body. Said longitudinal recesses accommodate handles-retainers connected with cross bars. Cross bars have sets of skew teeth for engagement with skew hollows on key. The first cross bar has segment hollow for key contour on end of set of skew teeth, and the second cross bar has clamp for key which is installed with screw on cross bar end in form of spring-loaded sleeve for engagement with shape of key which has a set of skew hollows only on one side. Cross bars and key are cylindrical. EFFECT: higher operate reliability of lock. 2 cl, 4 dwg