FIELD: locking mechanisms.;SUBSTANCE: locking system of a security type contains cylinder (3), it is equipped with set of pistons (8), which can be formed using elastic means on a print formed by edges (7b, 7c) of control key (7) perpendicular to the direction, in which specified key (7) enters cylinder (3). Pistons (8) can occupy two positions, namely, a position taken into cylinder (3), when key (7) is inserted into the latter, and an extended position, when key (7) is removed from it, while the cylinder consists of locking unit (3) in the form of a parallelepiped, which can be installed in receiving unit (5), and it contains locking means (9, 17), which are activated, when locking (blocking) unit (3) is inserted into receiving unit (5). ;EFFECT: creation of a safety locking system of a cylindrical type is ensured, which has a simple structure and for which it is not required that its locking includes turning the control key.;13 cl, 19 dwg
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