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WO/2004/055837A1 |
A superconducting magnet comprising a bulk body or a sheet body of type II superconducting material in which distribution of flux density component normal to the surface of the bulk body or the sheet body directly above the surface has (...
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WO/2004/044930A2 |
A method of making a compound magnet (20) that comprises a plurality of regions at least some of which have different magnetization directions. The method comprises assembling a plurality of sections (22, 24, 26, 28 and 30) of magnetizab...
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WO/2004/034553A1 |
An apparatus and its method of use enable magnetizing the permanent magnets of an electric motor rotor using the winding coils of the motor stator when the circumferential width of each rotor permanent magnet pole is larger than the circ...
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WO/2004/032310A1 |
A tubular permanent magnet which is used in a micro DC brushless motor used in a miniature hard disc, and employs an Sm-Co based magnetic material. The permanent magnet has radially magnetized domains formed in the circumferential direct...
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WO/2004/012212A1 |
A new type of frequencied magnetizing device and its magnetization process in which the two poles of the magnetized element are encoded by a micro-processor or a differential phase controlled magnetizing charger such that various combina...
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WO/2003/077237A1 |
A recorded data deleting device (1) comprising a recess part (2) where a hard disk device (20) is placed, a coil (4) for generating a magnetic field having a ring shape and enclosing the recess part (2) so as to enclose the hard disk dev...
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WO/2003/019587A1 |
The invention relates to a magnetically hard object and to a method for adjusting a magnetic vector of a magnetically hard object. The aim of the invention is to provide a magnetically hard object and a method for producing the same, sai...
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WO/2003/012806A1 |
A method of magnetizing a rare−earth magnet, comprising a step for preparing a rare−earth magnet (22) disposed so as to form a cylinder (22a), a first magnetizing step for forming a first area (R1) magnetized from the inside to the o...
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WO/2002/103722A1 |
The present invention relates to an apparatus for combined electrophysical treatment of ferromagnetic materials and especially to an apparatus for simultaneous magnetic and ultrasound treatment of ferromagnetic materials. The apparatus c...
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WO/2002/066784A1 |
The method of providing for well tubular member (12) magnetization, the steps include providing a magnetizing structure (40) comprising an electrical coil (43) defining an axis, relatively displacing the member (12) and the structure (40...
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WO/2002/041334A1 |
A method of magnetising members of magnetisable material (210) including presenting a magnetiser head to a circular array of the members (210) mounted on a rotor plate (200) of an electrical machine. The magnetiser head includes a circul...
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WO/2002/037512A1 |
A varying voltage is applied to a conductive winding (61) that magnetically interacts with a magnetic body (60). The varying voltage causes the voltage induced in the winding to have such waveform and magnitude that the integral over tim...
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WO/2002/026468A2 |
A process and apparatus for magnetizing plastic pipe in which a plastic pipe material, plastic pipe coating, rectangular strips or solids rods are doped with a magnetizable material, the doped plastic material is extruded to form a plast...
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WO/2002/005359A1 |
The invention relates to a method enabling an HTS magnet to be magnetized by external exposure only through an arrangement consisting of high-temperature-superconductor rings, or with additional support from an external magnetic field ap...
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WO/2002/003402A1 |
The invention relates to the production of magnetic anistropy during the manufacture of magnetic layers.Said anistropy results in a set distribution both inside and along the layer. A magnet system is provided with at least three electro...
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WO/2001/093287A1 |
The present invention disclosed a new type of magnetization device. In the magnetization device, external baffles and internal baffles both made of diamagnetic material are arranged between a pipe wall and a coupling shaft both made of m...
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WO/2001/061829A1 |
The advent of powerful rare earth permanent magnets has led to a resurgence of permanent magnet electrical machines, but the assembly of the magnets into the machine, conventionally by hand, has caused difficulties. To meet these, am met...
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WO/2001/020621A2 |
An apparatus for demagnetising the magnetic state of a component comprises a coil and means for supplying an AC magnetic field through the coil and means for generating and applying a decaying magnetic field, an exponentially decaying fi...
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WO/2001/020754A1 |
A permanent magnet field-type compact DC motor having a high output and a low cogging torque is made by fixing a pair of rare earth magnets (1) mainly composed of rare earth-iron-based rapidly quenched and solidified flakes to a soft mag...
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WO/2001/013383A1 |
A high energy magnetizer/demagnetizer (26) on a non-operative portion of a tool holder (20) includes a magnetizer/demagnetizer body (22) on the non-operative portion of the tool holder (20) and defining a mounting axis. At least one perm...
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WO/2000/077776A1 |
A scheme for ultrafast magnetization reversal in an in-plane magnetized layer (3) is disclosed. For that, an external magnetic field H¿ex? is applied such that the magnetization M precesses around the external magnetic field H¿ex? and ...
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WO/2000/069052A2 |
The present invention relates to a method for generating a magnetostatic field, wherein said method involves supplying a direct electric current into a closed electric circuit made of serially connected conductive sections. The circuit i...
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WO/2000/063927A1 |
Ferromagnetic material of an elongated object, such as a fiber optic cable (12), is permanently magnetized in a manner that results in a substantially cylindrically symmetric radial external magnetic field around the object. The radial e...
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WO/2000/060618A1 |
The present invention relates to magnet having inclined magnetic force lines and the power plant such as motor using it. The power plant according to the present invention has simultaneously magnetic force by repulsive power between the ...
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WO/2000/054293A1 |
The invention relates to a system for pulse magnetizing high-precision magnetic scales. Said system consists of a shaped current conductor (1) and a pulse current source (2) which is composed of a capacitor bank (3), a transfer switch (4...
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WO/2000/030029A1 |
The inventive marking device (1) for applying to objects has a magnetic coding with areas of different magnetisation. According to the invention, the coding has at least one magnetic base layer (3) and at least one magnetic coding layer ...
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WO/2000/022587A1 |
A demagnetization apparatus for use with magnetically based electronic article surveillance systems having a dual status anti-theft marker containing at least one demagnetizable control element which when demagnetized allows the marker t...
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WO/2000/014732A2 |
The invention relates to a method for modifying the magnetizing direction (M) of a thin film. An electric field (H) with a field component that is perpendicular to the surface of the field is produced.A magnetizing direction is produced ...
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WO/2000/002006A2 |
The invention relates to a method for regulating the magnetization of at least one bias layer of a magnetoresistive sensor element, whereby the bias layer is part of an AAF (artificial antiferromagnetic) system consisting of at least one...
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WO/1999/040552A1 |
A bias element (10) for use in a magnetomechanical EAS marker is magnetized to saturation (14). Then the magnetic charge in the bias element is redistributed (16) by applying to the bias element a magnetic field having an AC ringdown cha...
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WO/1999/010900A1 |
The present invention relates to techniques for demagnetising objects in a fusion cake, objects used in vehicle construction, turbines, diesel engines as well as other equipment. The purpose of this invention is to provide a standardised...
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WO/1999/008294A1 |
An element of an apparatus is magnetized so as to generate a magnetic field pattern around the element. To achieve this, use is made of a magnetizing coil, and the element and the magnetizing coil are moved relative to each other, the ma...
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WO/1998/029883A1 |
An apparatus (10) for altering the magnetic state of a permanent magnet comprises a coil inductor (26) for generating and applying an induced magnetic field to the permanent magnet. The coil inductor (26) is provided in circuit between t...
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WO/1998/021700A1 |
A two-dimensional array of magnetomechanical markers (20) is adhered to a continuous web (62). A magnetizer element (70) is scanned (74) across the web (62) to magnetize the bias elements in a group of markers (20) with a first polarity,...
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WO/1998/014963A1 |
A method and apparatus for treating an object includes generating a magnetic field (10) wherein at least some of the magnetic field (10) is characterized by changes in amplitude of the magnetic field (10) from an average non-zero value (...
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WO/1997/037362A1 |
In a method of magnetising a cylindrical body comprising a substantially isotropically distributed material according to the present invention, the method comprises the steps of: applying a magnetic field to the body; and varying the mag...
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WO/1997/035328A1 |
A small-sized highly precise superconducting magnet device such that the magnetic flux changes little with the time and quenching hardly occurs. A magnetization adjusting method for uniformly magnetizing such a magnet device is also disc...
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WO/1997/014935A2 |
A position encoder is provided for indicating the relative position between first and second relatively movable members. One of the members carries a multi-pole magnetic scale (7) which generates a magnetic field whose magnitude and dire...
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WO/1996/038738A1 |
The invention concerns an arrangement (7) for setting the magnetization distribution of the bias layer part (3) of a sensor element (E). This element has a thin-film structure (S) on a substrate (2) and displays an increased magneto-resi...
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WO/1995/008177A1 |
Devices and methods are provided for deactivating magnetic security strips. Helmholtz coils (3) are provided in a quantity and orientation such that the security strips can be deactivated without regard to their orientation simply by exp...
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WO/1994/014175A1 |
A method for the fabrication of a cylindrical permanent magnet in which the direction of magnetisation varies around the circumference of the cylinder in which a flexible sheet of a magnetic material is formed into a cylinder, magnetised...
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WO/1993/023859A1 |
Disclosed is an apparatus (10) and process for magnetizing permanently magnetizable strip and sheet material (50) to form a pattern of band-like poles on the material. Two parallel stacks (14, 16) of permanent magnets (18) are used, each...
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WO/1993/021643A1 |
A process and apparatus for permitting the magnetization of flexible hard magnetic materials in the form of sheets or strips, such as magnetic rubber, wherein opposing arrays (10) formed from alternating magnetic disks and flux conductin...
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WO/1993/015484A1 |
A device for activating or deactivating an antitheft device and comprising a strip (1) with a layer of magnetic, soft material and a layer of magnetic, hard material, whereby a characteristic magnetizing pattern is provided by an activat...
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WO/1993/004441A1 |
The present invention relates to a premagnetizing head for charging the magnetizable pigment of characters printed on a document. The head includes a permanent magnet (10) whose one pole is connected to a magnetically conductive metal pl...
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WO/1993/000257A1 |
A method for automatically monitoring and controlling, by means of a modelling system, the degaussing of a naval vessel having degaussing circuits. The method comprises the steps of: determining a danger zone in relation to which a magne...
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WO/1992/022916A1 |
The present invention relates to a means for reducing or eliminating a remanent magnetic field around for example a joint that is to be welded. The means is characterized in that it includes a permanent magnet (5) which is displaceably m...
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WO/1992/004695A1 |
A method and apparatus for producing complex magnetization patterns in a sheet of magnetic material. A fixture having top and bottom plates with a matching conductor pattern embedded in one surface of each plate. The conductor pattern co...
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WO/1991/016717A1 |
High energy rare earth magnets are formed by injection molding and magnetizing (14, 20) in the mold (12) at a temperature sufficient to substantially reduce the coercivity of the magnetic material, whereby high energy fully magnetized ra...
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WO/1991/010173A1 |
An improved bar magnet (130) and method of construction, and an improved magnetic core (170) comprising an assembly of such magnets (130), for use in a processing station of an electrostatographic printing machine. The improved bar magne...
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