Patent ID: 7016492

Claim:
A magnetic hinge apparatus, maintained at a first stable equilibrium or at a second stable equilibrium, comprising: a hinge housing having a cavity; a hinge shaft situated inside the cavity; an immobilized magnetic device assembled inside the hinge housing and situated inside the cavity; and a rotatable magnetic device fixed with the hinge shaft inside the cavity and rotatable to the immobilized magnetic device, the rotatable magnetic device being disposed with the immobilized magnetic device as mates, the opposite surfaces of the rotatable magnetic device and the immobilized magnetic device having the same polarity, wherein the rotatable magnetic device is positioned at one side adjacent to the immobilized magnetic device when the magnetic hinge apparatus is maintained at the first stable equilibrium, and the rotatable magnetic device is positioned at the other side adjacent to the immobilized magnetic device when the magnetic hinge apparatus is maintained at the second stable equilibrium.