Abstract: A cylindrical magnetic circuit which is able to prevent deformation of a cylindrical yoke for holding two or more magnets without increasing the thickness of the yoke more than required, and a method of producing such a circuit. A cylindrical magnetic circuit (1) for generating a magnetic field in a space inside of plural annularly placed magnets (2), including: a cylindrical yoke (3) which is placed radially outside the magnets (2) and is fixed to the magnets directly or via an intermediate member or substance; and at least one nonmagnetic member 4 existing between pairs of circumferentially adjacent magnets, and a method for producing the cylindrical magnetic circuit (1).

Abstract: A magnetron sputtering device includes a main body and a magnet mounting system for receiving magnets. The magnet mounting system comprises a first annular member, a second annular member coaxially encasing the first member, a third annular member coaxially encasing the second member, a first driving device connected to the first annular member, a second driving device connected to the second annular member, and a third driving device connected to the third annular member. The first driving device, the second driving device, and the third driving device are respectively configured for driving the first annular member, the second annular member, and the third annular member to move along an axis of the first annular member.

Abstract: A magnetic attachment mechanism and method is described. The magnetic attachment mechanism can be used to releasably attach at least two objects together in a preferred configuration without fasteners and without external intervention. The magnetic attachment mechanism can be used to releasably attach an accessory device to an electronic device. The accessory device can be used to augment the functionality of usefulness of the electronic device.

Abstract: A shunt plate is provided that is associated with a first side of a multi-pole magnetic structure. The shunt plate provides a magnetic short between opposite polarity magnetic sources on the first side of said magnetic structure, the magnetic short causing a magnetic flux of said opposite polarity magnetic sources to be routed from said first side of the magnetic structure through said magnetic structure to the second side of said magnetic structure. The thickness of the shunt plate is selected by determining the integrated flux across a magnetic source of the magnetic structure such that the corresponding flux density in the shunt plate does not substantially exceed the flux density saturation level of a cross section of the shunt plate.

Abstract: A plug or connector including a coded magnet and an electrical contact. As the plug approaches a corresponding port, the coded magnet interacts with a magnet within the port. The interaction between the plug coded magnet and the port coded magnet provides a force to connect and/or align the plug with the port. Once the plug is received within the port, if a process is completed, the coded magnets polarities are altered to eject the plug from the port.

Abstract: A magnetic drive including a first magnet and a second magnet, wherein the first magnet is positioned in a way that it is constantly within the sphere of influence of the second magnet, wherein the second magnet includes several second individual magnets, which are all spaced apart by gaps, wherein local field strength peaks controllable with regard to the position of the first magnet relative to the second magnet can be generated in the second magnet by means of a magnetization means so that the first magnet is movable relative to the second magnet by means of the attractive force between different poles of the first magnet and of the second magnet controlled by the controllable local field strength peaks, or by means of the repulsive force of equal poles of the first magnet and the second magnet controlled by the controllable local field strength peaks.

Abstract: An apparatus, system, and method for attaching a sensing device to a target object. The apparatus includes one or more magnets that attach the apparatus to a target object. The sensing device is coupled to the target object with a coupling material and is held in place against the target object by the apparatus.

Abstract: A multilevel magnetic system described herein includes first and second magnetic structures that produce a net force that transitions from an attract force to a repel force as a separation distance between the first and second magnetic structures increases. The multi-level magnetic system is configured to maintain a minimum separation distance between a transition distance where the net force is zero and a separation distance at which a peak repel force is produced.

Abstract: A multilevel magnetic system and method for using the same are described herein. A wide-range of devices including a momentary snap switch, a cushioning device, and an exploding toy are also described herein that may incorporate one or more of the multilevel magnetic systems.

Abstract: According to one embodiment, a magnetic oscillation element includes a first electrode/a second magnetic layer/a nonmagnetic spacer layer/a first magnetic layer/a second electrode, stacked in this order. The first magnetic layer has variable magnetization direction. The second magnetic layer has fixed magnetization direction. A thickness of the first magnetic layer in a direction connecting the first and second electrodes is greater than 2 times a spin penetration depth of the first magnetic layer. The thickness of the first magnetic layer is less than a maximum width of the second electrode. The first magnetic layer has edge portion provided outside the first surface when viewed along the direction. A width of the edge portion in a direction perpendicular to a tangent of an edge of the second electrode is not less than an exchange length of the first magnetic layer.

Abstract: A paint composition, in particular an anti-corrosive paint, for rare earth permanent magnets, has an epoxy resin mixture, a curing accelerator, an epoxy-functional adhesion promoter based on silane and a solvent. Due to the paint compositions, rare earth permanent magnets can be bonded simultaneously to a magnet system in a one method step and can be protected against corrosion. Due to the anti-corrosive paint, magnet systems which have excellent anti-corrosion properties, a satisfactory adhesive strength even at high temperatures and display good electric insulation properties, are provided.

Abstract: A magnetic device includes a substrate and an array including a plurality of magnetic particles, in which a magnetic dipole moment direction of each magnetic particle in a majority of the magnetic particles in the array alternates with respect to a magnetic dipole direction of a directly adjacent magnetic particle or directly adjacent magnetic particles in the array.

Abstract: An adjustable magnetic separator and method is provided herein to process aggregate material including magnetic material into a magnetic portion having a predetermined magnetic susceptibility, and a non-magnetic portion. The method and system include configuring an adjustable magnet to provide an effective magnetic field at a separating surface of the magnetic separator corresponding to the predetermined magnetic susceptibility of the magnetic portion to be separated. The strength or intensity of the effective magnetic field may be varied by mechanically adjusting the position of the magnet array included in the adjustable magnet relative to a separating surface defined by the magnetic separator.

Abstract: An improved magnetic attachment system is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Abstract: A magnetic drive assembly comprising at least one fixed magnetic core and at least one mobile magnetic core, whereby each magnetic core, which may be fixed or mobile, contains a plate formed by polygonal magnetic units, nested among themselves according to the corresponding concave and convex sides of each unit, in such a way that together they form circularly expanding magnetic field forces that interact amongst themselves to cause rotation of the mobile magnetic core.

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: A high-performance variable-magnetic-field dipole-ring magnetic circuit is provided. Specifically, provided is a permanent-magnet magnetic field generator having inner and outer dipole rings which share a central axis, and a yoke which surrounds the dipole rings, wherein a unidirectional variable magnetic field is generated in a space within the inner dipole ring. The generator has a fastener for fixing the inner dipole ring, and a rotator for allowing the outer dipole ring to rotate around the central axis. In the generator, each of the inner and outer dipole rings has a plurality of permanent magnets arranged in such a ring shape that a magnetization direction of the permanent magnets can make a full rotation per half circle of the ring.

Abstract: A magnetic coupling member, method, and system including a housing and a first arrangement of a plurality of magnets housed within the housing is disclosed. The first arrangement of magnets is selectively arranged and disposed to provide alignment and detachable engagement with a second arrangement of a plurality of magnets.

Abstract: An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Abstract: A propulsion mechanism that relies on magnets and the geometric property of a hole in a magnet in the direction of the polarity that always involves the addition of a directional component in the magnetic field. This additional direction component is benign in terms of pure geometry and non-ferrous materials without an interacting field of force, but when such a hole involves two or more magnets, the magnet not fixed experiences a net thrust away from the other.

Abstract: A vibration device includes a casing having an operating chamber formed therein, a vibration plate having an extended plate shape with one end fixed to the casing and an opposite end freely disposed in a space within the operating chamber, and a first magnet attached to the free end of the vibration plate. The vibration device further includes a second magnet fixed to an upper portion of the casing at a position above the first magnet to have a repulsive force against the top surface of the first magnet, and a third magnet fixed to a lower portion of the casing at a position below the first magnet to have a repulsive force against the underside surface of the first magnet, such that the free end of the vibration plate to which the first magnet is fixed is easily vibrated between the second magnet and the third magnet in response to external impact on the vibration device.

Abstract: A permanent magnet apparatus has a first ferromagnetic member and a second ferromagnetic member movable in working direction relative to the first ferromagnetic member. A controller displaces a permanent magnet between an engaged position adjacent to the ferromagnetic members with the flux being perpendicular to the working direction and a disengaged position spaced from the first and second ferromagnetic members. The second ferromagnetic member is biased from the first position to the second position relative to the first ferromagnetic member when the driving magnet is in the engaged position so as to be arranged to selectively drive an output movement in response to an input to the controller which displaces the ferromagnetic members and the driving magnet relative to one another to store potential energy by placement of the driving magnet in the engaged position subsequent to locating the ferromagnetic members in the first position.

Abstract: Numerous arrangements for permanent magnets are disclosed that can focus the flux produced by the magnets. Depending on the particular application in which the disclosed designs and techniques are used, efficiency and reliability may be increased by minimizing flux leakage, increasing peak flux density, and shaping the flux fields to improve the effective coercivity of the flux focusing permanent magnet arrangement when loaded, and to achieve customized voltage and current waveforms. The disclosed magnet assemblies may be incorporated into a machine, such as a motor/generator, having windings and may be disposed for movement relative to the windings. The magnet assembly may be mounted on a support formed of one or more ferromagnetic materials, such as a back iron. The disclosed flux focusing magnet assemblies may be formed using a variety of manufacturing methods.

Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.

Abstract: A medical examination or treatment device including a C-arm that is guided movably along an arc path on a bracket via a mechanical guidance device is provided. Magnet elements are provided on the C-arm. Magnetic field generation elements on the bracket interact together to create a magnetic field that moves the C-arm along the arc path.

Abstract: A method is described herein for detachment of two objects. The method comprising the steps of: (a) associating a bias field source with a first magnetic structure associated with a first object, the first magnetic structure comprising one or more magnetic field sources, the first magnetic structure being magnetically attached to a second magnetic structure associated with a second object, the second magnetic structure comprising one or more magnetic field sources; and (b) using the bias field source to produce a repel force large enough to cause detachment of the first magnetic structure from the second magnetic structure thereby causing detachment of the first object from the second object.

Abstract: Provided is a field pole magnet to be installed in a rotor or a stator of a permanent magnet rotary machine, the field pole magnet including: multiple magnet pieces (31 to 34) formed by breaking and dividing a single permanent magnet; and at least one magnet-piece holding member (40) configured to hold these magnet pieces (31 to 34).

Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.

Abstract: A magnetic attachment mechanism and method is described. The magnetic attachment mechanism can be used to releasably attach at least two objects together in a preferred configuration without fasteners and without external intervention. The magnetic attachment mechanism can be used to releasably attach an accessory device to an electronic device. The accessory device can be used to augment the functionality of usefulness of the electronic device.

Abstract: There are disclosed pole piece designs. In embodiments a pole piece comprises a rear face, the rear face comprising at least one channel. In embodiments the pole piece comprises at least one hole for accepting a cooperating shimming rod. There are also disclosed magnet arrays and magnetic resonance apparatuses comprising the pole pieces as well as uses of the pole pieces with magnet arrays according to embodiments.

Abstract: An improved field emission system and method. The invention pertains to field emission structures comprising electric or magnetic field sources having magnitudes, polarities, and positions corresponding to a desired spatial force function where a spatial force is created based upon the relative alignment of the field emission structures and the spatial force function. The spatial force function may be based on one or more codes. In various embodiments, the code may be modified or varied. The code may be combined with another code. One or more aspects of the code, including spacing and amplitude, may be modulated or dithered according to a predefined pattern. Multiple magnet arrays may be combined, each based on a different code or portion of a code, resulting in a combination spatial force function. Magnet structures having differing field patterns may be used to generate a desired spatial force function related to a cross correlation of the two field patterns.

Abstract: An apparatus may comprise a permanent magnet unit, an end effector, and an electromagnetic clamping device. The end effector may be capable of performing workpiece operations. The electromagnetic clamping device may have an activated state and a deactivated state.

Abstract: A method for plating magnets with metal is disclosed. In one embodiment, the metal is aluminum and the aluminum plating provides a number of aesthetic and structural advantages, over brittle magnetic materials, which are only plated with a thin, anti-corrosive metallic layer. More specifically, methods for creating multi-pole bar magnets and structural elements primarily with aluminum coated magnetic material are disclosed.

Abstract: A spherical magnet is formed as a hollow sphere having a fluid tight outer surface of a first magnetic pole and an inner surface having a second magnetic pole that is magnetically opposite the first pole. A plurality of individual thin flexible rectangular plate magnets are arranged as a continuous outer layer of the spherical magnet. Each individual plate magnet has four sides, an inner magnetic portion and an outer non-magnetic portion that extends around all four sides of the magnetic portion. Each inner magnetic portion includes a first face disposed on the outer surface and having the first pole and a second face opposite the first face, disposed on the inner surface and having the second pole.

Abstract: Methods and systems for transportation using a rail structure are disclosed. In one aspect, a track for use with at least one of a magnetic levitation vehicle and a rolling vehicle having one or more wheels is disclosed. The track includes a first head having a maximum lateral dimension, a second head having a maximum lateral dimension, and a connection portion extending between the first head and the second head. The first connection portion may have a maximum lateral dimension that is less than the maximum lateral dimension of the first head. The track may also include a base and a support extending between the second head and the base.

Abstract: An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Abstract: An improved system and method for focusing magnetic fields involves two aligned correlated magnetic structures each comprising an inner portion and an outer portion surrounding the inner portion where the inner portion and the outer portion have an opposite polarity relationship. The focused field magnetic structures produce composite magnetic fields where surface fields have substantially greater field strength than side fields.

Abstract: A periodic magnetic field generation device is provided with a field pole of a Halbach array structure in which main pole permanent magnets magnetized in a direction of a generated field and sub pole permanent magnets magnetized in a direction opposite to the direction of magnetic poles of the main pole permanent magnets are alternately disposed linearly or circularly so as to be adjacent to each other. A part of each of the main pole permanent magnets on a side on which the magnetic field is generated is replaced by a soft magnetic member, and a relation between a length A of the soft magnetic member on the side of the generated field along a moving direction and a length B of each main pole permanent magnet on a side of a back yoke along the moving direction is A<B.

Abstract: Various embodiments for magnetic detent assemblies provide for detent devices with improved performance and manufacturability. In one embodiment, magnetic detent assemblies provide for custom detent positions and custom force profiles by including a pair of unitary magnetic components each having a special geometry. In an embodiment, the changing area of overlap (and hence magnetic flux) between the magnetic components can give rise to the custom detent positions and custom force profiles. In a specific embodiment, the magnetic components can comprise an N-point star shaped geometry, where the number and distribution of the start wings can be varied to define customized detent positions and the contour of the star wings can be varied to create customized force profiles. In other embodiments, devices such as laptop computers and docking stations for handheld electronic devices can implement multi-position detent hinges with the magnetic detent assemblies.

Abstract: A sliding mechanism (20) used in a portable electronic device is described. The magnetic forces created between facing similar poles of a first magnetic component (24) and a second magnetic component (25) drives the cover section (22) to the open or closed position. Two third magnetic components (26) are received and secured in the sliding slot (214) and stably secure the cover section (22) in the open or closed position.

Abstract: A sucker-rod pumping system includes diametrically charged rare earth magnets having significant monopolar character mounted on the rod string and, optionally, within a magnet barrel below the pump barrel. The magnets are jacketed to preclude contact with crude petroleum. The magnets subject the petroleum to a significant magnetic flux to substantially preclude precipitation of paraffins and asphaltenes with a minimum of retrofit to existing equipment and without substantially altering the operation of the rod string.

Abstract: An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Abstract: The invention relates to the field of permanent magnet materials, and discloses a composite permanent magnet material. The material is formed by splicing at least one permanent magnet material, with binding agent in between. The novel composite permanent magnet material that is formed by splicing different magnets greatly enriches the existing permanent magnet system and can completely replace the expensive rare metallic magnetic material. The composite permanent magnet material disclosed by the invention has high performances. The magnetic performance of the magnet can be regulated and controlled by adjusting the type and length of the magnets. In particular, the magnetic blank between the bonded NdFeB and the sintered NdFeB provides the designer and user of permanent magnetic motors with broader and flexible in material selection space and cost selection space.

Abstract: A gravity-assisted self-rotating device includes a support unit, a magnet unit located over the support unit, and a rotating unit pivotally turnably mounted on the support unit. The support unit has a bottom and a top extended in a direction opposite to the bottom. The magnet unit and the support unit together define a rotation space for the rotating unit to rotate therein. The gravity-assisted self-rotating device can be applied to a power generating module with a coil unit of the latter mounted on the rotating unit. With these arrangements, the gravity-assisted self-rotating device and the power generating module using same are able to automatically generate electric power output to achieve the purpose of energy saving and environmental protection.

Abstract: A magnet structure is provided that includes a first layer of magnets including a first pole magnet and a plurality of first magnets that are positioned about the first pole magnet. The plurality of first magnets are oriented to have respective magnetic fields directed inward relative to the first pole magnet. The magnet structure may also include a second layer of magnets including a second pole magnet and a plurality of second magnets positioned about the second pole magnet and oriented such that the plurality of second magnets have respective magnetic fields directed outward relative to the second pole magnet. The magnet structure may also include a planar magnet positioned between the first and second layers of magnets and oriented such that the planar magnet repels each of the first and second layers of magnets. A magnet assembly and an associated method are also provided.

Abstract: A medical instrument for use on a patient. The medical instrument includes a housing having a proximal end and a distal end, an electric motor mounted to the housing having a drive shaft rotatable about a drive axis, a drive magnet fixed to the drive shaft of said motor which rotates with the drive shaft about the drive axis, and a tool assembly coupled to the housing via a tool mount. The tool mount orients the tool assembly relative to the housing whereby guided rotational, translational, and/or oscillary motion of a tool within the tool assembly is achieved via the structure of the tool mount in conjunction with a magnetic coupling between magnets attached to both the motor and the tool.

Abstract: This invention relates to methods and devices for propulsion through a fluid, in particular at low Reynolds number. We describe a method of propelling one of a magnetic device and a fluid relative to the other, the magnetic device comprising a pair of magnetic moments linked by an elastic coupling element, one of said moments having a greater resistance to a change in orientation due to an external applied magnetic field than the other, the method comprising applying an elliptical or ellipsoidal rotating magnetic field to the device to cause a change in mutual attraction or repulsion between said magnetic moments to thereby change a physical configuration of said device, propelling said device relative to said fluid.

Abstract: A magnetic attachment system is described. The magnetic attachment system has a first plurality of magnetic sources arranged in accordance with a first pattern and a second polarity of magnetic sources arranged in accordance with a second pattern. The first pattern and second pattern are self-complementary, where the magnetic attachment system will correlate and align with a duplicate magnetic attachment system.

Abstract: A magnetic attachment mechanism and method is described. The magnetic attachment mechanism can be used to releasably attach at least two objects together in a preferred configuration without fasteners and without external intervention. The magnetic attachment mechanism can be used to releasably attach an accessory device to an electronic device. The accessory device can be used to augment the functionality of usefulness of the electronic device.

Abstract: A magnetic field generation system includes first (28a) and second (28b) magnetic flux concentrators spaced apart to form a sample volume (30). A first set of auxiliary permanent magnets (10a, 10b) can be symmetrically oriented about and in contact with a portion of the first magnetic flux concentrator (28a). Similarly, a second set of auxiliary permanent magnets (10c, 10d) can be symmetrically oriented about and in contact with a portion of the second magnetic flux concentrator (28b). The first(10a, 10b) and second (10c, 10d) sets of auxiliary magnets can be magnetically associated via the first (28a) and second (28b) magnetic flux concentrators. Magnetically soft shunts (38) can be movably oriented to allow variation of the magnetic field strength across the sample volume by disrupting the field flux across the magnetic flux concentrators.