Patent ID: 9007157
Filing Date: 2015-04-14
Classification: G06F,H01F,H05K

Abstract:
1. A multi-state magnetic assembly carried by a housing of an electronic device and operable to magnetically attach an object having a triggering magnetic element to the housing, the multi-state magnetic assembly comprising: a first magnet and a second magnet each having a first surface having a shape in accordance with an interior surface of the housing and that together are capable of providing a magnetic field at an exterior surface of the housing; a magnetic attractor block between the first and the second magnets that reduces the magnetic field at the exterior surface of the housing preventing formation of a magnetic circuit that is suitable for magnetically attaching the object to the housing; and a magnetic shield formed of a ferrous material having a first surface attached to the interior surface of the housing and a second surface having a shape in accordance with the first surfaces of the first and second magnets and attached thereto, wherein a triggering magnetic field provided by the triggering magnetic element at or near the exterior surface of the housing interacts with the magnetic field causing formation of the magnetic circuit through the housing that is suitable for magnetically attaching the object to the housing.