Patent ID: 7030530

Claim:
A permanent magnet element for attachment to an outer surface of an electrotechnical device, comprising; at least one permanent magnet piece having a surface portion and being mountable with respect to the surface portion of the electrotechnical device for magnetically interacting therewith, a protective cover formed with at least one open side, said cover being arranged to partly surround the permanent magnet piece or pieces, said cover having inner surface portions for engaging the outer surface of the electrotechnical device-in confronting relationship, said cover for supporting the magnetic piece or pieces such that the surface portion of each magnetic piece or pieces is in alignment with the surface portion of the cover and likewise disposed in close proximity to the surface portion of the electrotechnical device, said cover having end portions, each end portion being formed with a circumferential flange having inner and outer surface portions, said flange extending laterally of the cover, the inner surface portions thereof for engaging the outer surface portions of the electrotechnical device in confronting relationship, and one or more fastening elements for radially engaging the outer surface portions of the flanges externally of each flange and securing the cover to the surface of the electrotechnical device.