Abstract: The invention relates to a friction surface clutch (10) for use in motor vehicles, in particular for switching an air compressor or the like, wherein the friction surface clutch comprises a first tapered element (11) having a first friction surface (12) and a second tapered element (13) having a second friction surface (14), wherein the friction surface clutch has an actuating device (15) having an actuating element (16) for force-locked connection and disconnection of the tapered elements, wherein the tapered elements are in force-locked connection in an unactuated operating state of the friction surface clutch, wherein the actuating device comprises a pressure element (21) coupled to the actuating element and a lever device (22) interacting with the first tapered element, wherein the pressure element can be engaged with the lever device in an actuated operating state of the friction surface clutch so that the force-locked connection can be disconnected, wherein the first tapered element has a guide part, in

Abstract: A device (1) for transmitting torque for driving an auxiliary unit, in particular an alternator, preferably in a motor vehicle, and for damping torsional vibrations, said device comprising driving means (2) that can be driven about an axis of rotation (4) by an internal combustion engine, and output drive means (3) rotatable about the axis of rotation (4) that are arranged and designed for driving the auxiliary unit, wherein at least one axial front face of the driving means (2) and/or of the output drive means (3) carries permanent magnet means (10, 11) which allow torques to be transmitted between the driving means (2) and the output drive means (3) and which allow torsional vibrations to be dampened, the poles (13, 14, 15, 16) of the permanent magnet means (10, 11) being arranged in at least one radial plane, characterized in that the permanent magnet means (10, 11) comprise a plurality of permanent magnet elements (17) arranged next to each other in the circumferential direction, these permanent magnets (

Abstract: A device (1) for transmitting torque for driving an auxiliary unit, in particular an alternator, preferably in a motor vehicle, and for damping torsional vibrations, said device comprising driving means (2) that can be driven about an axis of rotation (4) by an internal combustion engine, and output drive means (3) rotatable about the axis of rotation (4) that are arranged and designed for driving the auxiliary unit, wherein at least one axial front face of the driving means (2) and/or of the output drive means (3) carries permanent magnet means (10, 11) which allow torques to be transmitted between the driving means (2) and the output drive means (3) and which allow torsional vibrations to be dampened, the poles (13, 14, 15, 16) of the permanent magnet means (10, 11) being arranged in at least one radial plane, characterized in that the permanent magnet means (10, 11) comprise a plurality of permanent magnet elements (17) arranged next to each other in the circumferential direction, these permanent magnets (

Abstract: The proposal is for a switchable friction clutch having a drive wheel (5) driven by a drive motor via a drive belt, wherein a first electromagnet arrangement (19) is provided for actuating a first friction clutch (21), and a second electromagnet arrangement (24) is provided for actuating a second friction clutch (23) in order to be able to drive a drive shaft (13) of an auxiliary unit (3) at different rotational speeds via the drive wheel (5) at one rotational speed of the drive wheel. According to the invention, a belt drive arrangement is provided between the drive wheel (5) and the drive shaft (13) of the auxiliary unit (3) to drive the drive shaft (13) at the different speed.

Abstract: An electromagnetic friction clutch (1) is proposed having two clutch plates (2, 8) which have concentrically circular, magnetically soft ring areas (3a-3c, 9a-9d) which are at least partially magnetically insulated from one another, which friction clutch (1) transmits comparatively large torques while having a compact design. For this purpose, pole faces (4a-4f, 10a-10f) which, when viewed in the radial cross section, oscillate in the axial direction are formed at the magnetically soft ring areas (3a-3c, 9a-9d).

Abstract: A method for producing clutch and/or brake friction disks for electromagnetic clutches and/or electromagnetic brakes having at least one friction surface element through which the magnetic field flows, wherein at least one circular slot is cut by lathe machining in the friction surface element from a friction contact surface, and wherein at least two webs which connect a pole surface ring to the remaining/other friction surface element are made in the friction surface element from that side which is opposite the friction contact surface such that the slots which are cut from the friction contact surface are interrupted remote from the webs to form continuous air gaps.

Abstract: The invention relates to a shiftable friction clutch (1a, 1b) for actuation with a pressure medium. Clutches of this type can be used, for example, to drive auxiliary assemblies such as fans (22) in vehicle construction. An especially compact construction is achieved through the use of a disk spring (6). A production method is furthermore proposed.

Abstract: A friction clutch (5) having a drive side and an output side which can be used to drive a fan impeller (2), and a selectively engageable friction disk clutch (13), which in the engaged state connects the output side to the drive side, and a first eddy current clutch (15) for providing a slip speed on the output side, the first eddy current clutch (15) having an eddy current zone formed on a cooling ring (11), wherein an eddy current zone for a second eddy current clutch (18) is provided on the same cooling ring (11) on which an eddy current zone for the first eddy current clutch (15) is formed.

Abstract: An electromagnetic friction clutch (1) is proposed having two clutch plates (2, 8) which have concentrically circular, magnetically soft ring areas (3a-3c, 9a-9d) which are at least partially magnetically insulated from one another, which friction clutch (1) transmits comparatively large torques while having a compact design. For this purpose, pole faces (4a-4f, 10a-10f) which, when viewed in the radial cross section, oscillate in the axial direction are formed at the magnetically soft ring areas (3a-3c, 9a-9d).

Abstract: A method for producing clutch and/or brake friction disks for electromagnetic clutches and/or electromagnetic brakes having at least one friction surface element through which the magnetic field flows, wherein at least one circular slot is cut by lathe machining in the friction surface element from a friction contact surface, and wherein at least two webs which connect a pole surface ring to the remaining/other friction surface element are made in the friction surface element from that side which is opposite the friction contact surface such that the slots which are cut from the friction contact surface are interrupted remote from the webs to form continuous air gaps.

Abstract: The invention relates to a shiftable friction clutch (1a, 1b) for actuation with a pressure medium. Clutches of this type can be used, for example, to drive auxiliary assemblies such as fans (22) in vehicle construction. An especially compact construction is achieved through the use of a disk spring (6). A production method is furthermore proposed.

Abstract: The proposal is for a switchable friction clutch having a drive wheel (5) driven by a drive motor via a drive belt, wherein a first electromagnet arrangement (19) is provided for actuating a first friction clutch (21), and a second electromagnet arrangement (24) is provided for actuating a second friction clutch (23) in order to be able to drive a drive shaft (13) of an auxiliary unit (3) at different rotational speeds via the drive wheel (5) at one rotational speed of the drive wheel. According to the invention, a belt drive arrangement is provided between the drive wheel (5) and the drive shaft (13) of the auxiliary unit (3) to drive the drive shaft (13) at the different speed.

Abstract: A friction clutch (5) having a drive side and an output side which can be used to drive a fan impeller (2), and a selectively engageable friction disk clutch (13), which in the engaged state connects the output side to the drive side, and a first eddy current clutch (15) for providing a slip speed on the output side, the first eddy current clutch (15) having an eddy current zone formed on a cooling ring (11), wherein an eddy current zone for a second eddy current clutch (18) is provided on the same cooling ring (11) on which an eddy current zone for the first eddy current clutch (15) is formed.