Flat magnetic key having cross-section with invariant central profile - which joints two variable geometry outer profiles with magnets in transition regions

摘要

The flat magnetic key has a cross-section consisting of three parts: The middle part is an invariant guide profile (1) and has at least two opposing overlapping recesses. the magnets (2, 3), adjoin the overlapping recesses. The two outer parts of the cross-section may be variable in geometry. A magnet may be located in a slot or step in the profile in the transition region between the guide profile and the variable profile. The advantage lies in providing a complex geometrical arrangement which is difficult to copy.