DOOR LOCK Russian patent published in 1998 - IPC

FIELD: locking devices. SUBSTANCE: door lock can be used in construction industry and also in transportation facilities for locking of sliding and turning doors. Installed in body of door lock is turnable span-piece with segment-like bevel, with internal teeth, and circular T-shaped thickening over external diameter. Engaged with span-piece are two gears. Number of teeth of each gear is equal to half of number of teeth on span-piece. Connected with gears are two cylindrical mechanisms. Lock is provided with strip having T-shaped slot for span-piece. Lock body is provided with spring-biased catch which interacts with span-piece. Catch is located in space which is free from circular thickening of span-piece. Each of lock gears has through-slot and is provided with spring-loaded cam introduced into slot. Cam can be moved longitudinally for removal from slot. Cam of each gear has spline for cylindrical mechanism. Door lock adds convenience in its using and widens its operating potentialities. EFFECT: higher efficiency. 19 dwg