DOOR LOCK Russian patent published in 1997 - IPC

FIELD: shackle-lock production engineering. SUBSTANCE: door lock has body with locking bar placed inside, snap spring lock controlled by lock knob, cylinder-made working member and (or) steady-state key unit, lock knob axis and longitudinal groove made in door lock body for lock knob axis placing. Locking bar moves with aid of tow-bar connected by kinematical link with cylinder-made working member and (or) steady-state key unit. Snap spring lock moves by lock knob or by two-shoulder lever action, the last is connected by its axis with locking bar of lever. Snap spring lock extremes stop fixing is made by lock knob axis action directly (without any additional members). Snap spring lock is placed in dimple made in door lock body like segment-shaped recess connected with longitudinal groove for lock knob axis placing. Full length of segment-shaped recess and longitudinal groove exceeds snap spring lock free running path while door slammed closing. EFFECT: wider range of door lock using. 4 cl, 4 dwg