LOCKING DEVICE Russian patent published in 1997 - IPC

FIELD: magnetomechanical systems, in particular, mechanisms providing for imposing and removal of restrictions in movement of members that are inaccessible for direct contact with them. SUBSTANCE: the locking device has a bar installed for movement under the action of forces of magnetic interaction with its permanent magnet. The permanent magnet is installed in such a manner that one of the bar ends is magnetized in the magnetic field of this magnet, and on the other-retaining end of the bar a groove is made for engagement with the hole in the butt of the movable member. To enhance the secrecy of unlocking of locking devices, a rack with fixing members and holes separated by slotted cross-pieces is installed on the fixing end of the locking bar; the holes are made with a shift on both sides perpendicular to the bar axis, they are located on the opposite sides of the rack along the line of its movement at distance equal to or exceeding the diameter of the locking bar fixed end. The extension of each of the holes in the same direction equals the required movement of the rack at a single cycle of action on the free end of the locking bar by the magnetic key. EFFECT: improved design. 2 cl, 8 dwg