DOOR LOCK Russian patent published in 2008 - IPC E05B47/00 

FIELD: ironmongery, particularly locks to protect different objects against intrusion.

SUBSTANCE: lock comprises cross-bar and retention means for cross-bar fixation in locked position. Cross-bar is made as separate member. If one of said members is fixedly connected to movable door part another one is secured to fixed door part. Cross-bar is made as plate with figured cut having varying width, which is rounded in area of cross-bar cooperation with locking member and has diameter exceeding width of linear part of figured cut beginning from cross-bar end. Cross-bar fixation means is made as nut installed so that the nut may reciprocate along shaft provided with thread corresponding to nut thread. Nut section cooperating with cross-bar is shaped as cylinder and has diameter corresponding to that of round cross-bar cut. Overlaying nut section has flat touching finger installed so that nut may slide along finger. Shaft may rotate about longitudinal axis thereof transversely to cross-bar surface. Shaft cross-section diameter corresponds to width of linear figured cut section. The first gear wheel is fixedly connected to shaft and is brought into engagement with that secured to shaft of electric drive, preferably operated by means of controller.

EFFECT: increased reliability of cross-bar fixation in lock body along with improved resistance to breaking-in.

1 cl, 10 dwg