A coupling for transmitting torque from a drive to a load has a first connection for connection with the drive, a second connection for connection with the load, and an elastic element for vibration damping and between the first and second connections in the energy transmission path therebetween. An actuator carried on the elastic element has a base body and a centrifugal mass body rotatable relative thereto. One of the two bodies carries an electrical conductor and the other of the two bodies carries a permanent magnet. The conductor is in a magnetic field of the permanent magnet. Thus a flow of current through the conductor makes the centrifugal mass body exert an angular force on the base body to compensate for rotational vibrations.

Provided is a contactless vertical transfer device using a linear motor. The contactless vertical transfer device using a linear motor includes: a transfer unit for picking up an article; and a linear motor located on a side portion of the transfer unit to move the transfer unit, wherein the linear motor comprises at least one driving unit that is located on a side portion of the transfer unit and provided with a mover which a coil is wound; and a rail unit that is located apart from the mover by a predetermined distance in a lateral direction and provided with a plurality of magnet portions disposed in a transfer direction of the transfer unit. The transfer unit is moved along the rail unit by a thrust force of the mover and the magnet portion.

A magnetic coupling assembly for coupling of a first rotary shaft and a second rotary shaft. The magnetic coupling assembly includes a first and second rotary hub, a sleeve, coaxial with the first rotary hub and arranged to be rotatable with respect to the first rotary hub, a first and second displacement element threadingly connected to the sleeve, and a first and a second rotatable inductor rotor arranged to co-rotate with the rotation of the first rotary hub. The first and second rotatable inductor rotors are connected to the first and second displacement element, respectively, and rotatable central magnet rotor. The sleeve includes threaded outer surfaces of opposite threading engaged by the first and second displacement elements so as to displace the first and second displacement elements in opposite directions.

A transport apparatus includes a transport rail extending along a predetermined path, a transport vehicle configured to be movable along the transport rail to transport a material, and a brake unit mounted on the transport vehicle to be adjacent to the transport rail and configured to apply an eddy current braking force to the transport vehicle.

An electromagnetic brake that variably influences the flow of molten steel in two width regions (B1, B2) of a mold (1) of a slab continuous casting assembly by variably adjusting the magnetic flux density in the two width regions with two magnetic circuits, each magnetic circuit having a first pole (4a), a second pole (4b), and a yoke (2) for magnetically connecting the first and the second pole (4a, 4b). The first and the second poles (4a, 4b) lie substantially opposite each other in the direction of thickness (d) of the mold (1), and the first pole (4a) extends in the direction of the second pole (4b) in the direction of thickness (d) and vice versa. At least one pole (4a, 4b) of either magnetic circuit can be moved relative to the yoke (2) in the direction of thickness (d) of the mold (1).

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetic flux interaction that, in effect, may provide a tunable resistance to movement, changing the rate of relative movement between the members. In one embodiment, the device comprises a first member in a kinematic relationship with at least one further member to form a system. The system moves within a limited range of motion and the system interacts when an external energizing force is imposed on the system causing the members to respond due to their kinematic and dynamic characteristics and thereby creating relative motion between the members. The trigger member is coupled to the at least the first member and moves in response to a pre-determined system movement. When the trigger member moves, the trigger member imposes a braking action on the system or a member or members thereof. The speed and/or intensity of the braking action imposed by the trigger member on the system or a member or members thereof is controlled by the trigger member rate of movement. This rate of movement is in turn governed by a magnetic flux interaction between the trigger member and the at least one first member causing formation of a magnetically induced eddy current force between the parts.

An eddy current brake for a vehicle, the eddy current brake comprising a rotor, and an electromagnet arranged to receive current from an electromechanical energy generating means during braking of the vehicle and to induce an eddy current within the rotor.

An electric magnetic resistance control structure for an exercise machine includes a base; a flywheel, pivotally connected to the base through a rotating shaft, the rotating shaft defining an axial direction, the flywheel, a non-magnetically sensitive layer being coupled to a circumference of the flywheel; a power unit, fixed to the base; a magnetic resistance unit, including a coupling portion corresponding to an arc of the non-magnetically sensitive layer, at least one magnetic member being provided on the coupling portion and kept at a distance from the non-magnetically sensitive layer to generate a magnetic resistance effect; a control unit, configured to control a current applied to the power unit to drive the magnetic resistance unit to move along the axial direction, thereby changing an overlapping area of the magnetic member and the non-magnetically sensitive layer in the axial direction, so as to adjust a magnetic resistance of the flywheel.

Described herein are eddy current brakes and associated methods of their use, particularly configurations that have a kinematic relationship with at least two rotational degrees of freedom used to tune operation of the brake or apparatus in which the brake is located.

Described herein are braking mechanisms and related methods of using eddy current interactions to resist relative movement between members, the magnetic flux about an eddy current region being modified beyond an inherent drag effect resulting from a simple magnetic pole arrangement.