DOOR LOCK Russian patent published in 2000 - IPC

FIELD: door locks. SUBSTANCE: door lock body accommodates cross bars with post, levers spring-loaded relative to body. Each lever has main recesses on its side surfaces with respect to longitudinal axis to receive body main posts, and key for location of its bit in code hollows of step recesses forming lever teeth. One of extreme cross bars presents latch made for its fixation to edges of longitudinal recess made in body by means of handle spring-loaded in perpendicular direction relative to latch to ensure closing or opening door from room side. Made on lever side surfaces facing the latch are additional recesses for receiving of additional body post, and on opposite surfaces, hollows are made. Main and additional recesses are made at different distances relative to lever longitudinal axis. Latch carries post installed for slowing down of levers to prevent opening and closing of cross bars from latch sides of door in extended position of latch. Maximum moving-out of cross bars exceeds that of latch by a factor of 1.2. Made at base of lever large tooth is hollow and recess corresponding to it and extending along the entire length of cross bar post to provide for stopping of cross bar before moving to next position. EFFECT: higher reliability of locking. 3 cl, 4 dwg