MAGNETIC LOCK Russian patent published in 1994 - IPC

FIELD: engagement and disengagement of object movable and fixed parts. SUBSTANCE: lock has a permanent magnet installed for engagement with the mating ferro- magnetic part made as an electromagnet whose magnetic flux interacts with the permanent magnet flux. To facilitate the lock opening, the electromagnet flux is directed towards the permanent magnet flux. To enhance the convenience of use at closing, the electromagnet magnetic flux coincides with the permanent magnet magnetic flux. Besides, the electromagnet coil is connected to the circuit for its disconnection after the lock closes or opens. EFFECT: enhanced reliability. 3 cl, 3 dwg