An accessory fastener device including front and back magnets for securing an accessory to a fabric item or other surface. The front and back magnets may include fabric shields covering a portion of the magnets and are configured to interface with the front and back sides of a fabric item. The accessory fastener may also include an accessory coupling configured to removably couple with the accessory. The device is used to add a plurality of accessories to fashion items, and also as a decorative means for holding and securing items in place.

An adjustable magnetic counterbalance assembly wherein a counterbalance force of the adjustable magnetic counterbalance is adjustable. The adjustable magnetic counterbalance assembly includes at least one ferromagnetic tube; a magnet disposed in the at least one ferromagnetic tube and configured to be axially movable and wherein the magnet is configured to be rotationally movable relative to the respective at least one ferromagnetic tube; wherein the counterbalance force is configured to be adjustable by adjusting the rotational position between the magnet and a respective ferromagnetic tube to change the polar alignment of the magnet. Alternatively, the adjustable magnetic counterbalance assembly changes the counterbalance force based on the relative alignment of the poles of one magnet to an adjacent one.

A tank support assembly for a vehicle includes a vehicle structure and a storage tank assembly. The storage tank assembly is held in place relative to the vehicle structure via a magnetic support system. The magnetic support system includes tank magnets affixed to the storage tank assembly and structure magnets affixed to the vehicle structure. The tank magnets interact with the structure magnets to passively provide repulsive magnetic forces that constrain movement of the storage tank assembly relative to the vehicle structure without the tank magnets mechanically engaging the structure magnets.

There is described a securing device (10) for releasably securing a first object to a second objection. The device comprises a casing (12) and a coupling magnet (22) housed in the casing. The casing is configured for being inserted in a passageway formed by aligned openings (54, 60) of the first and second objects when assembled together, for blocking separation of the first object and the second object from one another. The coupling magnet (22) is moveable from an initial position to a working position to form a magnetic coupling for holding the casing in the passageway. The first and second objects can respectively be a tooth (50) of a mining or excavation bucket and an adaptor (52) of the bucket for the tooth (50). A fixed magnet (28) can be provided in the casing (12), the fixed magnet (28) being oppositely poled with respect to the coupling magnet (22) for damping the movement of the coupling magnet to its working position. There is also provided a removal tool (178) for removal of the securing device from its securing position. The removal tool includes a coupling magnet (180) for being moved from a retracted position to a coupling position for magnetically coupling with the securing device (10) for releasing the coupling magnet (22) of the securing device from its working position and withdrawal of the securing device.

A method, apparatus and system for decreasing random motions of a levitated diamagnetic cylinder is provided. Embodiments of the present invention utilizes a parallel dipole line (PDL) trap system to trap a diamagnetic object. The trap consists of a magnetic parallel dipole line system made of a pair of transversely magnetized (or diametric) cylindrical magnets. A diamagnetic object such as graphite rod can be trapped at the center. The system includes a differential photodetector pair, a differential amplifier, a differentiator, a proportional integral differential (PID) feedback controller and electrode voltage drive system. The feedback control system will minimize the speed of the trapped rod thus lowering its effective temperature. The system can be used to minimize intrinsic noise and enhance the precision in various sensing applications using a parallel dipole line trap.

There is described a securing device for releasably securing a first object to a second objection. The device comprises a casing and a coupling magnet housed in the casing. The casing is configured for being inserted in a passageway formed by aligned openings of the first and second objects when assembled together, for blocking separation of the first object and the second object from one another. The coupling magnet is moveable from an initial position to a working position to form a magnetic coupling for holding the casing in the passageway. The first and second objects can respectively be a tooth of a mining or excavation bucket and an adaptor of the bucket for the tooth. A fixed magnet can be provided in the casing, the fixed magnet being oppositely poled with respect to the coupling magnet for damping the movement of the coupling magnet to its working position. There is also provided a removal tool for removal of the securing device from its securing position. The removal tool includes a coupling magnet for being moved from a retracted position to a coupling position for magnetically coupling with the securing device for releasing the coupling magnet of the securing device from its working position and withdrawal of the securing device.

An apparatus for assembling a repelling magnet combination, comprising a first and second magnet, a first and second holding magnet, a first holding base with a first holding base first end, and a second holding base with a second holding base first end. The first and second holding magnets are positioned at the first and second holding base first ends, and the first and second magnets are magnetically attached to the first and second holding magnets respectively, with outward faces exhibiting like magnetic polarities. The first and second magnets are brought into contact by moving the first and second holding base first ends into close proximity, whereby the first and second holding magnets exert holding forces on the first and second magnets which overcome a repelling force generated therebetween, allowing a repelling force countering means, such as an adhesive, to bond the magnets together into a repelling magnet combination.

The magnetic bearings make use of magnet assemblies with a high magnetic field gradient. The magnet assemblies use two permanent magnets with opposite polarization in a Kittel open domain structure. The basic factor of magnetic separation is the magnetic force, which acts on a particle of the substance and which is proportional to the magnetic susceptibility of the substance, the value of the magnetic induction B and the value of the gradient B of the applied magnetic field. Therefore, increasing the sensitivity and selectivity of magnetic separation will require use of the highest possible values of magnetic induction B and magnetic field gradient B, or their united factorthe product BB. The magnetic assembly have repulsive magnetic systems each having two juxtaposed permanent magnets 2, 4 with opposite magnetization in the form of a Kittel open domain structure. In such an system, near the edges of the faces of the joining magnets, a strong magnetic stray field appears and the value of the product BB reaches 10.sup.11 mT.sup.2/m. To concentrate the magnetic stray field shields 6 are provided on top of the two magnets 2,4 with a gap 8 between the shields at the joint of the two magnets 2, 4 forming zones of high magnetic field gradient 14 with increased magnitude for the product BB.

A magnetic roll having a rotation axis, the magnetic roll including an axial series of segmented rings, each of the rings' segments incorporating a permanent having an outer end, an inner end, an axial end, an oppositely axial end, a circumferential end, a counter-circumferential end, a north pole positioned at the inner or outer end, and a south pole positioned oppositely from the north pole; a bonding matrix rigidly interconnecting the rings; and a magnetic armature operatively spanning between the permanent magnets' inner ends.

The invention relates to a starter for a motor vehicle heat engine. The starter includes a rotary electric machine provided with a stator (3). The stator (3) includes a magnetic pole assembly wherein a permanent magnet (5) forms at least two poles of the magnetic pole assembly. The permanent magnet may have a cylindrical shape and be molded from a combination of magnetic particles embedded within a non-magnetic binder. Using this structure, the number of magnets used to create the stator may be limited in number, thereby limiting the necessary assembly steps to create the stator.