Patent ID: 7621161

Claim:
A magnetic system for attaching to padlocks and locks, for unlocking the same, comprising a lock-cover element, and an unlocking-key element, said lock-cover element, alternately permitting and preventing access to a lock keyhole and a fitting, said unlocking-key element alternately blocking or unblocking said lock-cover element, said system being characterised in that said lock-cover element comprises a covering element, providing one or more gear-tooth elements allowing rotation of the covering element with respect to a plate element, said plate element providing one or more tooth elements for fixing the same to the fitting, said covering element providing a plurality of holes, said plate element providing a plurality of holes, in number corresponding to the number of holes provided in said covering element, one or more magnetic pin elements, of two different length, respectively long and short, inserted in said plurality of holes of said plate element, said magnetic pin elements being attracted toward the fitting by the metal of the same fitting or by a base platelet of said plate element, and in that said unlocking-key element comprises a clip element for its positioning and rotation, a key-body element provided with holes, and one or more coding-pin elements, comprised of magnet sensitive material or magnet insensitive material, in such a way to, depending on the relative position between said unlocking-key element and said lock-cover element, attract or not said magnetic pin elements.