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Patent Searching and Data


Matches 151 - 200 out of 2,820

Document Document Title
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
WO2000002006A3
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...  
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 ...  
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...  
WO2000014732A3
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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,...  
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 (...  
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...  
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...  
WO1997014935A3  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO/1990/003653A1
A method and apparatus for manufacturing magnets from a magnetizable material under the influence of a magnetic field. A magnetizable material is injected into at least one mold chamber within a frame. An electromagnetic field is generat...  
WO/1989/009901A1
A magnetic shaft seal comprises a packing ring (1) made of a permanently magnetized plastic, surrounding a rotatably mounted shaft (5) and having on the face nearer the shaft (15) a circular recess (2). The regions of the packing ring ad...  
WO/1988/001791A1
A transformer apparatus including a magnetic core (2) and a main winding (N1) is characterized in that an auxiliary winding (N2) is added in operative relation to the magnetic core (2), whereby a predetermined amount of demagnetizing cur...  
WO/1987/005435A1
A device for treatment of ferromagnetic materials comprising means (16, 21, 125, 127, 133, 150, 160, 165, 182, 193, 194, 196, 200, 206, 211, 232) for developing a magnetic field of a selected intensity, duration, and cycle, which field i...  
WO/1986/005313A1
A device for demagnetization of parts after they have been influenced with the magnetic field comprises coils (1, 2) connected to a source of alternating current and placed one inside the other at an equal angle to a tray (3) passing thr...  
WO/1985/004512A1
In order to form, on opposite plane surfaces of a magnetizable plate portion of a part (62), a series of magnetized areas, the device comprises a frame (68) wherein two support parts (64, 65) made of a material having a high magnetic per...  
WO/1985/003801A1
The magnetization device comprises an electric power source, at least two current pulse generator devices connected to said source and a plurality of elongated electric conductor parts (21 to 28) connected and arranged so that the magnet...  
WO/1985/000335A1
Magnet assembly consisting of a plurality of permanent magnets (1) each of which is wound around by a solenoid winding (4) which in use produces a field to force the permanent magnet (1) into positive or negative saturation in dependence...  
WO/1983/000944A1
Apparatus for uniformly premagnetizing magnetic media, such as wide magnetic tapes and/or for substantially uniformly orienting the magnetic particles in the slurry of the magnetizable layer of magnetic media during their formation. Prem...  
WO/1982/004160A1
A switching apparatus (1) for changing the polarity or intensity of the magnetic field of ferromagnetic bodies, for example the magnetic field of tensioning devices with permanent magnets, has a series arrangement. Said arrangement conta...  
WO/1981/001769A1
Prior art magnetic chuck control systems do not utilize state of the art components and do not sufficiently isolate the power output from control circuits. The instant invention discloses a magnetic chuck control system employing solid s...  
WO/1980/000196A1
A method of producing a roll-type magnet adapted to be used in electrophotographic reproducing machines etc., in which several notches (13) are formed on one side of a laminate (9) composed of two or more kinds of composite magnet sheets...  
WO/1979/000639A1
After assembly of a key, magnetic poles are imprinted on a magnetisable body (1) of the key by passing an electric current through a pair of parallel electrical conductors (22) which are spaced apart in a direction transverse to their le...  
JP6453510B1
[Subject] A manufacturing method of a sheet-shaped polymer material and a sheet-shaped polymer material manufactured by this which can be used also to a polymer material system currently generally used as what is called a packing materia...  

Matches 151 - 200 out of 2,820