An electrically and mechanically driven automotive accessory including a housing, an electric motor, a pulley, and a pulley assist mechanism. The electric motor comprises a stator assembly that is mounted to the housing and a rotor assembly that is mounted to a shaft. The electric motor creates a primary torque flow path that drives rotation of the rotor assembly relative to the stator assembly. The pulley is rotatable relative to the shaft and the rotor assembly. The pulley assist mechanism includes a plurality of claw-pole structures that are arranged circumferentially about the rotor assembly and an electromagnet that is configured to induce a magnetic field between the claw-pole structures and the pulley, which creates a secondary torque flow path between the pulley and the rotor assembly.

Magnetic clutch arrangement for connecting an output shaft (1) of a drive (10) to a drive shaft (2) of a working machine (20), having a hub (11, 21), the hub (11, 21) has a hollow space (12, 22); a first set of magnets (13, 23) is arranged in the hollow space (12, 22); having a cardan shaft head (14, 24) which is arranged in the hollow space (12, 22) in the hub (11, 21); a second set of magnets (15, 25) is arranged on the circumference of the cardan shaft head (14, 24); the cardan shaft head (14, 24) and the hub (11, 21) are coupled either to the drive shaft (2) or output shaft (1) so as to transmit torque; the cardan shaft head (14, 24) is tilted through an angle in the hollow space (12, 22) of the hub (11, 21), so that an asymmetrical gap (50) is formed between the hub (11, 21) and the cardan shaft head (14, 24).

Provided is a magnetic pump that includes an isolation hood, an electric motor, a first rotating magnet, a second rotating magnet, and a pump body. The isolation hood includes a first mounting position and a second mounting position which are isolated and sealed from each other. The electric motor and the second rotating magnet are both disposed on the first mounting position, while the first rotating magnet and the pump body are both disposed on the second mounting position. Further provided is a water pumping device that includes a magnetic pump and a box filled with a liquid to be transported. The magnetic pump is arranged on the box, the magnetic pump being the magnetic pump described above. Further provided is a method for using a magnetic pump, which can prevent contact between a power cable of the electric motor and the liquid inside the box.

A device for moving a fluid with magnetic gear includes two first balls each having a shape of sphere, respectively fixed to a rotating first shaft through respective centers of the sphere, each of the first balls having a first magnetic dipole in a direction orthogonal to the first shaft; and a second ball having a shape of sphere attaching a blade structure thereon to move the fluid, fixed to a freely rotatable second shaft through a center of the sphere, and having a second magnetic dipole in a direction orthogonal to the second shaft, wherein the centers of the first and second balls altogether form an isosceles triangle with a vertex angle being defined about the center of the second ball, satisfying $=2\arcsin \left(\frac{1}{\sqrt{3}}\right)70.53.$

A fluid pump assembly is used in combination with a container having a wall. The pump assembly comprises a first casing disposed outside the container in contact with the wall, a first magnetic assembly mounted to the first casing and operatively associated with a drive motor, a second casing disposed inside the container in contact with the wall, and a second magnetic assembly mounted to the second casing and operatively associated with an propeller. The first magnetic assembly includes a rotatable magnetic drive member drivingly coupled to the drive motor. The magnetic drive member is magnetically coupled to the magnetic driven member through the wall for imparting a rotary driving force of the drive motor to the propeller. Furthermore, the second casing is detachably connected to the second side of the wall of the container solely by magnetic attraction force between the first and second magnetic assemblies.

A fluid pump assembly is provided. The pump has a pair of units magnetically coupled to each other. The first unit contains a drive motor and a magnetic assembly. The second unit contains a magnetic assembly and a blade of a propeller/impeller for imparting movement to a fluid. As the first unit is activated by the drive motor, a magnetic flux is created which in turn rotates the magnetic assembly in the second unit, driving the blade.

The present invention relates to a pump unit (300), with at least one impeller, comprising a coupling, wherein the coupling is mechanically connected to the at least one impeller via an inner rotor and where an outer rotor is connected to an electrical machine arranged to produce a rotational torque, said pump being arranged to circulate a hot fluid by the impeller. The coupling includes an outer rotor including a plurality of permanent magnets (101,201) arranged to form a plurality of magnetic poles (105, 205), and an inner rotor (110, 210), whereby the outer rotor and the inner rotor are located coaxially to one another around an axis (130, 230) and spaced apart from one another by an air gap (150,250). A rotor can (330) is arranged in the air gap (250, 150) between the inner rotor and the outer rotor, so as to make a dividing section between the inner and outer rotor. Each of the plurality of magnetic poles comprises at least a section with a radial magnetic direction in respect of the axis (130, 230) and at least a section with a magnetic direction angled between a radial direction and a tangential direction in respect of the axis (130, 230), wherein the combined length of the sides of the plurality of permanent magnets cover less than 75% of the circumference of the cylindrical structure. The outer rotor has a cylindrical structure (120, 220) surrounding the plurality of magnetic poles (105, 205), and the cylindrical structure is made of a magnetic susceptible material for conducting a magnetic flux between the plurality of magnetic poles (105, 205) The inner rotor (110, 210) is made of a magnetic susceptible material and free from permanent magnetic material, wherein the inner rotor is formed with multiple radial projections (111, 211) acting as salient inner rotor poles distributed around the axis (130, 230) of the inner rotor. The invention also relates to a coupling with the above mentioned coupling features.

A water pump (1) according to the present invention comprises an electromagnetic clutch (60) that switches between a transmission state where a pump pulley (20) and an armature (83) of an armature assy (80) are made to frictionally engage to transmit drive force of the pump pulley (20) to a pump shaft (30) and a cutoff state where frictional engagement of the pump pulley (20) and the armature (83) of the armature assy (80) is released to cut off transmission of drive force from the pump pulley (20) to the pump shaft (30), and a flange member (120) provided on the armature assy (80) to rotate integrally with the pump shaft (30) and is configured such that when in the cutoff state, by magnetic attractive force between a permanent magnet (111) of the pump pulley (20) and a permanent magnet (131) of the flange member (120), the flange member (120) is rotated together with the rotation of the pump pulley (20).

A pump may include a stator, a rotor, and an impeller. The stator may include one or more electromagnets and one or more permanent magnets. The rotor may include an armature, one or more complementary permanent magnets, and a pull magnet configured to position the rotor in an axial direction. The rotor may be disposed within the stator. The complementary permanent magnets and the one or more permanent magnets of the stator may create magnetic bearings. The armature may be aligned with at least one of the electromagnets of the stator and configured to rotate the rotor with respect to the stator. The impeller may be coupled to the rotor.

Provided is a magnetic pump that includes an isolation hood, an electric motor, a first rotating magnet, a second rotating magnet, and a pump body. The isolation hood includes a first mounting position and a second mounting position which are isolated and sealed from each other. The electric motor and the second rotating magnet are both disposed on the first mounting position, while the first rotating magnet and the pump body are both disposed on the second mounting position. Further provided is a water pumping device that includes a magnetic pump and a box filled with a liquid to be transported. The magnetic pump is arranged on the box, the magnetic pump being the magnetic pump described above. Further provided is a method for using a magnetic pump, which can prevent contact between a power cable of the electric motor and the liquid inside the box.