LOCK WITH CODED MATRIX Russian patent published in 2008 - IPC E05B35/04 E05B37/20 

FIELD: ironmongery, particularly locks.

SUBSTANCE: lock comprises body. Rotary or linearly sliding code assembly and locking latch are installed in the body. Bolt is kinematically connected to code assembly by means of driver. Code assembly has channels including coaxial parts having different diameters adapted to receive code fixers so that the code fixers may reciprocate. The code fixers have annular transversal groove and skirt. Positions of annular transversal grooves of all code fixers define code combination of the lock. To retain code fixers in code combination position code assembly has movable code matrix comprising power frame and one or several code plates provided with through channels. Number and shapes of the through channels correspond to that of code fixers. The channels are composed of two eccentrically located orifices having different diameters. Larger orifice receives code fixer body, lesser one encloses transversal groove of the code fixer. Orifice eccentricity is equal to code matrix displacement in code assembly grooves. Code fixer are moved by means of code key bits to position where annular grooves of all code fixers are coplanar to code plate of the matrix to facilitate forced matrix sliding in code assembly grooves obliquely to code fixers displacement to release latch connection. As lock is locked matrix releases code fixers for forced skirt return against stop, matrix is moved in initial position for eccentricity value by matrix extensions or roller movement over body cam projections under code assembly movement so that latch rests upon bearing matrix frame to prevent reverse code assembly displacement and, as a result, bolt sliding.

EFFECT: increased mechanical strength and resistance to unauthorized action, increased cryptographic security, elimination of correspondence between code combination positions and vibroacoustic appearance to prevent lockpick selection by sound and vibration.

12 dwg