Magnetic lock device

Details Magnetic lock device Magnetic lock device

E - Fixed Constructions

05

B

E05B 47/00 (2006.01) A41F 1/00 (2006.01) A45C 13/10 (2006.01) H01F 7/02 (2006.01)

Patent

CA 2057707

ABSTRACT OF THE DISCLOSURE A magnetic lock device provides the powerful magnetic attraction by making full use of the magnetic lines of force provided by a permanent magnet, without causing the magnetic saturation and thereby causing any external magnetic leaks when they travel through the magnetic circuit concluded by the constituent elements. The magnetic lock device comprises a part A that provides the magnetic attracting action, and a part B that is magnetically attracted by the part B. The part A includes a permanent magnet, a first ferro- magnetic plate rigidly attached to one side of the permanent magnet, and a nonmagnetic enclosure for packaging the permanent magnet and the first ferromagnetic plate into one unit, and the part B includes a second ferromagnetic plate detachably attached to the other side of the permanent magnet and having a ferromagnetic rod extending therefrom and adapted to be inserted into the center bores through the permanent magnet and enclosure for engaging the first ferromagnetic plate or its ferromagnetic rod. The magnetic lock device further includes means for enhancing the magnetism at the point where the first and/or second ferromagnetic plate(s) and the ferromagnetic rod(s) are connected, for increasing the cross section area of the magnetic path.

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