FIELD: construction.
SUBSTANCE: lock of increased secrecy contains key plate, sleeve of key plate, pivots and pins. Pivots, pins and teeth of the key have arc shape with one curvature centre. Key plate has cylindrical transverse axis or semi-cylindrical cavity. End of the key is provided with semi-cylindrical cavity or projection in the form of cylindrical surface not less than through 181 degrees of arc, relative to the centre of which it can be rotated in restricted manner; for that purpose, the appropriate slot is made in sleeve of key plate.
EFFECT: increasing secrecy of lock and its resistance to being drilled out without increasing the key's dimensions.
9 cl, 5 dwg
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