An electrical device comprises a stack of electric elements, each comprising: an electrically insulating substrate, for instance of plastic, and at least one electrically conductive track connected to said substrate; the end zones of each of which tracks have terminals either for connection to a source of electrical energy, whereby electric current is conducted through each track during operation, or connection to a device for taking off electric current generated by magnetic induction in the track; which electric elements are connected mechanically to each other such that the device is unitary.

A belt pulley arrangement for a belt drive for driving auxiliary units of a motor vehicle, comprising a belt pulley for introducing a torque that can be supplied by a traction mechanism, an output shaft for driving an auxiliary unit, particularly a coolant pump, an electric machine for transmitting torque between the belt pulley and the output shaft, the electric machine including a rotor connected to the belt pulley and a stator connected to the output shaft, and being able to be electrically connected to an electric energy source for the purpose of accelerating the output shaft and/or to an electric energy sink in order to decelerate the output shaft, a first rotational speed measurement device for detecting the time curve of the rotational speed of the belt pulley and/or a second rotational speed measurement device for detecting the time curve of the rotational speed of the output shaft, and a control device connected to the electric energy source and/or electric energy sink so as to control an output shaft rotational speed time curve by temporarily electrically connecting the energy source and/or energy sink in reaction to the rotational speed time curve that has been detected. The power flow between belt pulley and output shaft which can be influenced by the electric machine provides that the auxiliary unit that is connected via the output shaft does not have to be designed for the most unfavorable operating point. As a result, the auxiliary unit can have smaller dimensions which allows a reduction in the construction space for motor vehicle components and particularly in the construction space for motor vehicle auxiliary units which can be driven by the belt drive.

A belt pulley arrangement for a belt drive for driving auxiliary units of a motor vehicle, comprising a belt pulley for introducing a torque that can be supplied by a traction mechanism, an output shaft for driving an auxiliary unit, particularly a coolant pump, an electric machine for transmitting torque between the belt pulley and the output shaft, the electric machine including a rotor connected to the belt pulley and a stator connected to the output shaft, and being able to be electrically connected to an electric energy source for the purpose of accelerating the output shaft and/or to an electric energy sink in order to decelerate the output shaft, a first rotational speed measurement device for detecting the time curve of the rotational speed of the belt pulley and/or a second rotational speed measurement device for detecting the time curve of the rotational speed of the output shaft, and a control device connected to the electric energy source and/or electric energy sink so as to control an output shaft rotational speed time curve by temporarily electrically connecting the energy source and/or energy sink in reaction to the rotational speed time curve that has been detected. The power flow between belt pulley and output shaft which can be influenced by the electric machine provides that the auxiliary unit that is connected via the output shaft does not have to be designed for the most unfavorable operating point. As a result, the auxiliary unit can have smaller dimensions which allows a reduction in the construction space for motor vehicle components and particularly in the construction space for motor vehicle auxiliary units which can be driven by the belt drive.

A magnetic gear system for use anywhere gears are required. The magnetic gear system incorporating magnetic gears including at least one end plate and at least one axle coupled to the at least one end plate. A plurality of magnet holders are also coupled to the at least one end plate. At least one magnet is contained in each of the plurality of magnet holders. Wherein the at least one magnet comprises two opposite polarities and the plurality of magnet holders are coupled to the at least one end plate with the at least one magnet having at least one polarity adjacent a similar polarity of another of the at least one magnets.

A magnetic coupling device for communicating continuous rotational or linear motion through a magnetic coupling of magnetic forces communicated from magnets operatively positioned on an oscillation assembly and a rotation assembly in positions sufficiently proximate to form the magnetic coupling. Employed to communicate an output force in a rotational direction from an input linear force communicated from a powered oscillation assembly, the magnetic force of the magnet communicating the force compresses the volume of ellipsoidal-like magnetic fields of the coupling alternately in unlike polar domains, to induce a smooth, blended polar continuity and communicate a continuous 360 degree rotational force to a rotation assembly operatively engaged with the magnetic coupling. The input force may be reversed to induce a continuous linear motion of a reciprocating assembly.

A non-contact power generator includes: a magnet disposed at a distance to a main surface of a moving body that moves in one direction and the opposite direction, and the magnet generating a magnetic flux passing the main surface; a coil being separated from a surface of the magnet that faces away from the main surface, the coil being linked with the magnetic flux from the magnet; and a magnetic flux guide member disposed in a part of a magnetic path of the magnetic flux linked with the coil. The magnet is moved along the shaft in the moving direction of the moving body at a speed lower than the speed of the moving body by a reaction force acting on the magnet on a basis of eddy currents generated in the main surface in such a direction as to hinder a change of the magnetic flux from the magnet.

A belt pulley arrangement for a belt drive to drive auxiliary units of a motor vehicle, having a belt pulley for introducing a torque that can be provided via a flexible drive means, an output shaft for driving an auxiliary unit, in particular a cooling water pump, and an electric machine for the transmission of torque between the belt pulley and the output shaft, wherein the electric machine has a rotor connected to the belt pulley and a stator connected to the output shaft. As a result of the power flow between the belt pulley and the output shaft, which can be influenced by the electric machine, it is not necessary to design the auxiliary unit that is attached via the output shaft for the least beneficial operating point, so that the auxiliary unit can be dimensioned smaller and a reduction in the installation space for motor vehicle components, in particular the installation space for auxiliary units of a motor vehicle that can be driven via the belt drive, is made possible.

A belt pulley arrangement for a belt drive to drive auxiliary units of a motor vehicle, having a belt pulley for introducing a torque that can be provided via a flexible drive means, an output shaft for driving an auxiliary unit, in particular a cooling water pump, and an electric machine for the transmission of torque between the belt pulley and the output shaft, wherein the electric machine has a rotor connected to the belt pulley and a stator connected to the output shaft. As a result of the power flow between the belt pulley and the output shaft, which can be influenced by the electric machine, it is not necessary to design the auxiliary unit that is attached via the output shaft for the least beneficial operating point, so that the auxiliary unit can be dimensioned smaller and a reduction in the installation space for motor vehicle components, in particular the installation space for auxiliary units of a motor vehicle that can be driven via the belt drive, is made possible.

The present disclosure provides an axial engagement-controlled variable damper comprising a rotor assembly coupled to a rotor shaft and disposed about an axis of rotation and a stator, coaxially aligned with the rotor assembly. The axial engagement-controlled variable damper may further comprise a flux sleeve, axially movable relative to the rotor assembly between at least a first position and a second position. The flux sleeve may comprise a circumferential flange portion disposed radially between the rotor assembly and the stator, and may be configured to alter magnetic coupling between the stator and the rotor assembly in response being moved axially. The axial-engagement controlled variable damper may be configured to generate a first drag torque in response to the flux sleeve being in the first position and a second drag torque in response to the flux sleeve being in the second position.

The present disclosure provides an axial engagement-controlled variable damper comprising a rotor assembly coupled to a rotor shaft and disposed about an axis of rotation and a stator, coaxially aligned with the rotor assembly. The axial engagement-controlled variable damper may further comprise a flux sleeve, axially movable relative to the rotor assembly between at least a first position and a second position. The flux sleeve may comprise a circumferential flange portion disposed radially between the rotor assembly and the stator, and may be configured to alter magnetic coupling between the stator and the rotor assembly in response being moved axially. The axial-engagement controlled variable damper may be configured to generate a first drag torque in response to the flux sleeve being in the first position and a second drag torque in response to the flux sleeve being in the second position.