Patent ReferencesMagnetic decoupler Switching apparatus for changing the absolute value and the permanent magnetization direction of ferromagnetic bodies, e.g. of permanent magnets Ball clutch mechanism with two sets of balls in separate radial planes Secure release apparatus for anti-theft fastening device Pulsed magnetic release mechanism Anti-theft tag Circuit and method for energizing a solenoid in an electronic device for a predetermined energizing period Article security element Patent #: 5572191 InventorsAssigneeApplicationNo. 125501 filed on 08/19/1998US Classes:70/57.1, For antitheft signaling device on protected article335/306, Plural magnets705/16Including point of sale terminal or electronic cash registerExaminersPrimary: Boucher, Darnell M.Attorney, Agent or FirmInternational ClassE05B 065/00Foreign Application Priority Data1996-02-22 CHAbstractAn apparatus and method for using a permanent magnet with a high coercive force and a permanent pole-reversible magnet with a low coercive force used in securing members in cooperation with wedging members. The apparatus also includes a release device, with a securing member inserted, and a combined control and feed device and a verification device, in the form of a till. The entire release device can therefore be, for example, directly linked to invoicing for a paid sum. The control and feed device controls and feeds the electromagnet coil of the magnetizing device. To release a securing member, the magnetizing device is activated, thereby reversing the poles of the permanent pole-reversible magnet. Both permanent magnets in the securing member subsequently repel, the wedge is released and the pin can be withdrawn from the locking section. | |