Patent ID: 8490245

Claim:
A hinge plate for connecting at least one of a leaf, a door, or a window to a frame so as to be hinged about a hinge axis, the hinge plate comprising: a frame hinge plate part configured to be fastened to the frame, the frame hinge plate part including a frame fastening part and a frame hinge part; a leaf hinge plate part configured to be fastened to the leaf, the leaf hinge plate part including a leaf fastening part; a leaf hinge part; and a hinge plate pin configured to define the hinge axis, the hinge plate pin being mounted in bearing bushes which include a first electric coil and a second electric coil, the bearing bushes being disposed in each of the frame hinge part and in the leaf hinge part, wherein the hinge plate pin is provided as a flux guiding element configured to guide electromagnetic flux lines between the first electric coil and the second electric coil, and wherein the first electric coil and the second electric coil do not physically contact each other.