A reversible torque transfer device includes an input shaft including a center disc, an output shaft including a first output gear and a second output gear, a first outer disc on a first side of the center disc, and a second outer disc on a second side. The first outer disc concentrically surrounds the input shaft and is configured to move translationally along the input shaft and rotate a first input gear, the first input gear being mechanically connected to the first output gear. The second outer disc concentrically surrounds the input shaft and is configured to move translationally along the input shaft and rotate a second input gear, the second input gear being mechanically connected to the second output gear. The center disc drives a rotational movement of the first and second outer discs based on a translational position of the outer discs along the input shaft.

A driving device configured to drive a rotary body includes a motor assembly and a plurality of first magnets disposed on the rotary body along a circumferential direction thereof. Sides of the magnets facing the motor assembly form a plurality of magnetic poles. Upon rotation of the motor assembly, the magnets is driven by magnetic interaction between the motor assembly and the magnetic member to rotate to drive the rotary body to rotate. The present invention also provides a bladeless fan including this driving device.

The present invention relates to an actuator system with a magnetic lead screw, comprises a magnetic rotor and a translator cylinder, the translator cylinder comprises a magnetic stator, the translator cylinder has a closed first end and a second end confined by a lid, the lid having a shaft opening for a shaft coupled to the magnetic rotor, wherein the magnetic rotor, when inserted in the translator cylinder, is arranged to translate a linear movement of the translator cylinder into a rotational movement of the magnetic rotor by using magnetic flux interacting between the magnetic stator and the magnetic rotor, said rotational movements is being transferred through a shaft, the lid with a shaft opening arranged for receiving the shaft, wherein the shaft is arranged to make both the linear and the rotational movement in the shaft opening, the lid being arranged for confining the second end of the translator cylinder, the translator cylinder confined by the lid forms, when divided by the magnetic rotor, a first chamber with a first volume and a second chamber with a second volume, wherein the first volume and the second volume changes as a function of the linear movement. The invention also relates to a method of operating an actuator system with a magnetic lead screw.

A permanent magnet speed governor having a fixed magnetic gap. The permanent magnet speed governor has an outer magnetic rotor connected to a drive shaft and an inner magnetic rotor connected to a driven shaft, at least one outer permanent magnet being evenly distributed along the circumferential direction of the inner circumferential surface of the outer magnetic rotor, at least one inner permanent magnet being evenly distributed along the circumferential direction of the outer circumferential surface of the inner magnetic rotor, two magnetic pole sides of the inner permanent magnet being respectively fixed to an iron yoke, another two sides each being provided with a magnetically conductive body, one end of the inner magnetic rotor being provided with a magnetic circuit regulator used for moving each magnetically conductive body along the axial direction. Adoption of the fixed magnetic gap structure reduces the difficulty of assembly.

A magnetic brake assembly for use with a wheel rim is described. The brake assembly includes a rotor secured to rotate with the rim and a stator secured to be rotationally stationary relative to the rotor. One of the rotor and stator has an electrically conductive body and the other of the rotor and stator has a magnetic array including a plurality of magnets configured to generate a magnetic flux. An actuator is connected to at least one of the electrically conductive body and magnetic array to selectively effect a brake mode and a non-brake mode. In the brake mode, the magnetic array induces eddy currents in the electrically conductive body to generate a magnetic braking force when the rim rotates above a threshold speed and in the non-brake mode, the induced eddy currents cause a negligible or no magnetic braking force as the rim rotates above the threshold speed.

A magnetic brake assembly for use with a wheel rim is described. The brake assembly includes a rotor secured to rotate with the rim and a stator secured to be rotationally stationary relative to the rotor. One of the rotor and stator has an electrically conductive body and the other of the rotor and stator has a magnetic array including a plurality of magnets configured to generate a magnetic flux. An actuator is connected to at least one of the electrically conductive body and magnetic array to selectively effect a brake mode and a non-brake mode. In the brake mode, the magnetic array induces eddy currents in the electrically conductive body to generate a magnetic braking force when the rim rotates above a threshold speed and in the non-brake mode, the induced eddy currents cause a negligible or no magnetic braking force as the rim rotates above the threshold speed.

A coaxial shaft system includes an inner shaft and an outer shaft. The inner shaft includes a first plurality of magnets. An outer shaft is located coaxially around at least a portion of the inner shaft. The outer shaft includes a second plurality of magnets. The second plurality of magnets faces towards the first plurality of magnets. A support system supports the inner shaft and the outer shaft so that the inner shaft does not come into physical contact with the outer shaft. A number and location of the first plurality of magnets and the second plurality of magnets are configured so that for every magnet in the first plurality of magnets there is a corresponding magnet in the second plurality of magnets that together form a closely proximate magnetically attractive pair that have opposite poles in close proximity.

An object of the present invention is to provide a rotationally driving mechanism that is capable of rotating a plurality of rotational shafts while continuously moving the rotational shafts without requiring a special driving device or control device, and is capable of appropriately changing a rotation speed with a simple configuration, and to provide a film label attaching apparatus. The rotationally driving mechanism includes a movable driven member 103 that includes a driven mechanism 105 in a tapered portion 104 and is coupled to a rotational shaft 112, and a driving member 101 that is disposed along a movement direction of the driven member 103 and includes a transmission mechanism 102 in an inclined portion 115. The transmission mechanism 102 is disposed to face an appropriate position of the driven mechanism 105.

An illustrative example embodiment of a method of making a rotary magnetic drive member includes establishing a plurality of magnet retainers on a rod using an additive manufacturing process. Magnets are inserted between the retainers with magnetic poles of axially adjacent ones of the magnets oriented with like poles facing toward a portion of one of the retainers between the adjacent ones of the magnets.

A device for transmitting rotational motions without contact may include an inner rotor with at least one inner-rotor magnet and an outer rotor with at least one outer-rotor magnet. The inner rotor and the outer rotor are magnetically coupled to one another and rotatable along a rotation direction about a common axis of rotation. The at least one inner-rotor magnet and/or the at least one outer-rotor magnet may have a magnetization that is at least one of diametric, radial, and lateral. The at least one inner-rotor magnet may have a different type of magnetization than the at least one outer-rotor magnet.