Abstract: An assembly can include a rotor that defines a rotor axis and that includes a number of permanent magnets; a stator that defines a stator axis, coaxially aligned with the rotor axis, and that includes a number of electropermanent magnets; and a controller that controls polarity of the electropermanent magnets to rotate the rotor about the rotor axis.

Abstract: The present disclosure relates to a foldable display device. A foldable display device includes a display panel on a first cover and a second cover and at least one hinge that connects the first cover and the second cover and the hinge includes a fixing frame, a pair of hinge shafts that passes through the fixing frame, a pair of rotating plates that is fixed to one end of the pair of hinge shafts and fixed to the first cover and the second cover to rotate together with the first cover and the second cover, and a pair of first holding members that is coupled to the pair of hinge shafts between the fixing frame and the pair of rotating plates and controls a folding angle of the first cover and the second cover by a magnetic force, thereby permanently implementing a holding force.

Abstract: A combination oven and cutting board has a front opening door and a metal upper surface with features that cooperate with the cutting board. The oven may have an internal heating cavity and a front opening door that incorporates a magnet that is used to pull a rack out of the oven.

Abstract: Method and device for self-regulated flux transfer from a source of magnetic energy into one or more ferromagnetic work pieces is provided. A plurality of magnets are disposed in a medium wherein gaps of predetermined distance are maintained between neighboring magnets. And the magnets we arranged such that magnetic flux exchange may take place between the magnets across the gaps and a ferromagnetic body in close vicinity or contact with the magnets.

Abstract: An apparatus including a harness board and a clamp removably connected to the harness board with a magnetic field. The magnetic field permits the clamp to be removed from the harness board. Also, a post is removably connected to the harness board using a magnetic field, and the magnetic field permits the post to be removed from the harness board.

Abstract: A method for creating and a device for a rotary switchable multi-core element, permanent magnet-based apparatus, for holding or lifting a target, comprised of two or more carrier platters, each containing a plurality of complementary first and second core elements. Each core element comprises permanent magnet(s) with magnetically matched soft steel pole conduits attached to the north and south poles of the magnet(s). Core elements are oriented within adjacent carrier platters such that relative rotation allows for alignment in-phase or out-of-phase of the magnetic north and south fields within the pole conduits. Aligning a first core element “in-phase” with a second core element, that is, north-north/south-south, activates that core element pair, allowing the combined magnetic fields of the pole conduits to be directed into a target. Aligning the core element pair “out-of-phase,” that is, north-south/south-north, deactivates that core element pair by containing opposing fields within the pole conduits.

Abstract: A method for assembling a cylindrical magnet assembly, which includes at least one coil mounted on a former, to a bore tube is provided. The method involves providing a cavity in the former at selected locations. At each of the selected locations, the material of the bore tube is deformed to form a radially-directed protrusion. Each protrusion is brought to bear against a periphery of each corresponding cavity.

Abstract: Preferred embodiments of the present magnetic locking system can be used for releasably locking a first component to a second component. In one embodiment, the locking system includes a ferro-magnetic member associated with the first component, where the ferro-magnetic member is made of a ferro-magnetic material, and a housing attached to the second component and positioned adjacent to the ferro-magnetic member. Preferably, the housing includes first and second blocks that sandwich an intermediate block. Further, the first and second blocks are each preferably made of a ferro-magnetic material and the intermediate block is made of a non-ferro-magnetic material. Additionally, there is also an aperture formed within the housing, with a permanent magnet rotatably seated within the aperture.

Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.

Abstract: A hinge assembly (20) including a first magnetic member (21) and a second magnetic member (22) is described. The polarities of opposing end surfaces of the first magnetic member and the second member are different. The second magnetic member is configured for rotating relative to the first magnetic member to generate a magnetic moment. In addition, an exemplary portable electronic device (100) equipped with the hinge assembly is also described.

Abstract: The force to draw an armature of an electromagnetic valve apparatus driving a valve for opening or closing a high-pressure liquid passage is increased and valve bouncing is alleviated by a surface of the core being flat and a surface of the armature facing the surface of the core being shaped convexly spherical. Interference of the surfaces is prevented by a smaller initial gap in a central portion of the faces, even when the armature is installed aslant due to insufficient accuracy of the component parts. Strong electromagnetic attraction can be secured because the smaller the gap is, the stronger the electromagnetic attraction.

Abstract: A hinge assembly (20) including a first magnetic member (21) and a second magnetic member (22) is described. The polarities of opposing end surfaces of the first magnetic member and the second member are different. The second magnetic member is configured for rotating relative to the first magnetic member to generate a magnetic moment. In addition, an exemplary portable electronic device (100) equipped with the hinge assembly is also described.

Abstract: A switch type ON/OFF structure for hoisting magnetic disks has a handle turnable towards one side to demagnetize and towards another side to generate a magnetic force to attract and move a work piece. The handle is hinged on one end surface of a hoisting magnetic disk which also has a first detent member and a second detent member. The first and second detent members can stop the turning of the handle. The handle further has an extensible latch member at one side spaced from the handle at a selected interval. The latch member has a distal end slidable over the second detent member and extendable downwards to allow the second detent member to be wedged in the interval and anchored. Thereby the hoisting magnetic disk can provide the magnetic attracting force and hoist and move the work piece safer.

Abstract: Provided is a two-axis driving electromagnetic actuator that includes a stage that is operative to be actuated about a first axis; an inner frame that that is disposed outside the stage and supports the stage by the first axis; an external frame that is disposed outside the inner frame and supports the inner frame by a second axis which is perpendicular to the first axis; a magnet that provides an electric field between the first axis and the second axis; a first driving coil that is formed on the inner frame and to which a first signal that actuates the stage in a direction of the second axis is applied; and a second driving coil that is formed on the inner frame and to which a second signal that actuates the stage and the inner frame in a direction of the first axis is applied, wherein the first driving coil and the second driving coil are electrically separated from each other.

Abstract: A semi-releasable magnetic tool is disclosed. The tool comprises two magnetizable pole plates. Each of said pole plates is bounded by peripheral edges. The pole plates are spaced apart and preferably disposed in substantial registry with one another. A generally non-magnetizable spacer member is positioned between the pole plates and spaced inwardly from the peripheral edges. A magnetic switch is mounted between the pole plates. The switch is switchably associated with at least one magnetic element. The magnetic element positioned so as to magnetize the pole plates. The magnetic element can be switchably moved toward and away from the pole plates so that they are strongly or weakly magnetized. The magnetization of the tool in the weaker configuration is such that the tool can be easily placed in a desired position on a magnetizable workpiece. The tool is clamped in position on the workpiece by moving the magnet(s) closer to the pole plates.

Abstract: A magnetism-sensitive lifter rotatable intermittently and dividing angles by a computer includes many permanent magnets and many induction silicon steel magnets to attract and repel one another, possible to rotate intermittently, divide angles equal and unequal and move up and down vertically by control of a computer.

Abstract: A pneumatically actuated magnetic workpiece/article holder is for use with a lifting assembly. The article holder comprises a housing having a magnetic assembly translationally mounted within the housing. The magnetic assembly comprises two opposed pole pieces and a permanent magnet centered and mounted between the pole pieces. A pneumatic actuator is mounted on the housing and is operatively connected to the magnetic assembly. The article holder may further comprise brackets for operatively mounting the article holder on the lifting assembly. The magnet may be formed from a rare earth metal having very strong magnetic properties, such as neodymium.

Abstract: A magnetic core is obtained by winding or laminating at least one alloy ribbon and has excellent squareness characteristic and magnetic saturation characteristic in a high frequency region wherein the squareness ratio of the magnetic core is improved by restricting the surface roughness of the alloy ribbon to specific regions.

Abstract: A magnetic holder has a permanent magnet stator and a permanent magnet rotor, the magnetic mass of the latter being greater than that of the form and a play defining an air gap being provided between them so that the losses in the air gap compensate for the magnetic mass by which the rotor permanent magnet exceeds the stator permanent magnet.