Patent ID: 8336696
Filing Date: 2012-12-25
Classification: F16D

Abstract:
1. A friction clutch for transmitting torque from a rotor, which is driven about an axis S, to an element which is to be driven, comprising: a friction disk clutch having an electromagnet arrangement including a coil and magnetically conductive means which at least partially surrounds the coil and which includes a web section lying radially on the outside with respect to the axis S and a web section lying radially on the inside with respect to the axis S and oriented axially, and permanent magnetic means provided adjacent to the magnetically conductive means and via which an axially movable friction section of the friction disk clutch is magnetically connected to the rotor by a magnet attraction effect, wherein, in the electrically switched on state of the electromagnet arrangement, a bearing of the friction section against the rotor is eliminated by attenuating the magnetic attraction effect of the permanent magnetic means, wherein a portion of the permanent magnetic means extends further outward in the radial direction with respect to the axis S than the web section lying radially on the outside and/or extends further inward than the web section lying radially on the inside, and wherein the magnetically conductive means further comprises a part which is T-shaped in cross section and has a central part, and a transverse part which is oriented at an angle with respect to the central part, wherein the web section lying radially on the outside with respect to the axis S is formed with the central part.