Patents
Patents for H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
03/1992
03/24/1992US5098276 Apparatus for making a superconducting magnet for particle accelerators
03/19/1992WO1992004484A1 Electroplating bath using organic solvent for plating permanent magnet of r2t14b intermetallic compound
03/18/1992CN2099368U Wire laying device for winding machine
03/17/1992US5097373 Laminated magnetic core
03/17/1992US5096882 Process for controlling oxygen content of superconductive oxide, superconductive device and process for production thereof
03/17/1992US5096741 Corrosionproof coating material and method for formation of coating therewith
03/17/1992US5096513 Very thin soft magnetic alloy strips and magnetic core and electromagnetic apparatus made therefrom
03/15/1992WO1992005023A1 A method and an apparatus for manufacturing an article of a composite material, an article, disc brake, a commutator and a commutator brush made by the method
03/15/1992CA2091334A1 Method and an apparatus for manufacturing an article of a composite material, an article, disc brake, a commutator and a commutator brush made by the method
03/12/1992CA2039864A1 Search coil assembly with low resistance coils and method for making same
03/11/1992EP0474371A2 Fabrication method for transformers with an amorphous core
03/11/1992CN1059422A Technological process for manufacturing permanent-magnetic oxyferrite magnetic ring
03/11/1992CN1059421A Insulating press ring of large-size transformer and its manufacturing method
03/10/1992US5094393 Apparatus and process for making a superconducting magnet for particle accelerators
03/10/1992US5093981 Method for making a transformer core comprising amorphous metal strips surrounding the core window
03/04/1992CN1059230A Rare earths-iron-nitrogen permanent magnet material
03/03/1992US5093076 Hot pressed magnets in open air presses
03/03/1992US5093038 Ultraviolet curable ink composition
03/03/1992US5092534 Tensioning apparatus
03/03/1992US5092530 Coil winding installation and method for automatic wire changeover
03/03/1992CA1296780C Stationary induction electric apparatus and manufacturing method therefor
03/03/1992CA1296511C Toroidal transformer and machines and methods for making same
02/1992
02/26/1992EP0471946A2 High magnetic moment materials and process for fabrication of thin film heads
02/25/1992US5091286 Laser-formed electrical component and method for making same
02/25/1992US5091253 Alternating concentric rings; annealing in magnetic field
02/25/1992US5090112 Method and apparatus for manufacturing coils
02/18/1992US5089334 Flux spreading thin film magnetic devices
02/18/1992US5089066 Rare earth-boron-iron alloy with protective coating of metals, carbides, nitrides; slot peening, impregnation with resin
02/18/1992US5088186 Method of making a high efficiency encapsulated power transformer
02/18/1992US5088184 Process for making a superconducting magnet for particle accelerators
02/13/1992DE4025278A1 Anisotropic samarium-iron-nitrogen magnetic article prodn. - by nitriding hot compacted and shaped precursor powder body
02/12/1992EP0470475A2 Method for the preparation of a body from anisotropic magnetic material based on the Sm-Fe-N substance system
02/11/1992US5086554 Method of manufacturing a magnetic core
02/06/1992DE4024080A1 Automatic winder for ring cores - has rotary unit with pairs of roller guides
02/05/1992EP0469530A1 Ignition coil assembly directly coupled to ignition plug for internal combustion engine
02/04/1992US5085935 Flux spreading thin film magnetic devices
02/04/1992US5084955 Method for manufacturing a superconducting magnet
01/1992
01/30/1992DE4023141A1 Encapsulating prismatic inductance - has fixing contact ends in off=centre split plane of mould and injecting resin asymmetrically to inductance
01/29/1992EP0468228A1 Method of producing amorphous magnetic film
01/29/1992CN1058287A Low loss ferrite material and making method
01/28/1992US5083366 Thin ribbon of magnetic iron alloy; heat resistant layer of silica, silanol oligomer and ceramic particles; heat treatment
01/28/1992US5083360 Method of making a repairable amorphous metal transformer joint
01/22/1992EP0467451A1 Method and apparatus for piercing at least one pin in a coil bobbin
01/22/1992CN2094106U Automation device of pole coil pancake winding machine
01/21/1992US5082745 Boron, neodymium, and iron alloy; protective coating
01/21/1992CA1294677C Composite magnetic material and its production process
01/16/1992DE4122383A1 Ferromagnetic nitrogen-contg. cobalt-iron alloy film - used in magnetic recording heads
01/15/1992EP0465760A1 Method of and apparatus for assembling a transformer core
01/14/1992US5080731 Highly oriented permanent magnet and process for producing the same
01/14/1992US5080295 Wire tensioner for a wire handling machine
01/09/1992WO1992000596A1 High coercivity magnetic inks
01/08/1992EP0464474A2 Delible magnetic ink and process for making the same
01/08/1992CN2092807U Adjusting deviation device of foil winding equipment
01/07/1992US5079222 Copper Oxide Ceramics
01/02/1992EP0380532B1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording
01/02/1992DE4020887A1 Device for winding coils on esp. toroidal cores - grasps both ends of needle by means of two independently driven grippers on carriage-mounted slider
12/1991
12/31/1991US5077325 Adhesive for bonding ferrite magnet to motor
12/31/1991US5076861 Rare earth-iron alloy having columnar macrostructure; casting, hot working
12/25/1991CN2091488U Printed circuit type transformer
12/24/1991US5075150 Pack of laminations with projections and depressions in torsionally flexible contact
12/24/1991US5075034 Induction curable two-component structural adhesive with improved process ability
12/24/1991US5074929 Method of making a permanent magnet sensor element with a soft magnetic layer
12/24/1991US5074687 Armature of an electromagnet-coil/armature system for dot matrix print heads, and method of manufacturing same
12/19/1991DE4019140A1 Wire tension control - has brake wheel on drive shaft with hysteresis coupling while winding electrical coils
12/19/1991DE4019139A1 Wire guide unit for coil winding - uses belts as controlled braking unit to maintain constant speed
12/18/1991EP0461829A1 Method of making a transformer core
12/18/1991EP0461562A1 Deflection coil and manufacturing method therefor
12/17/1991US5072761 Skeining device
12/17/1991US5072516 Assembling collar packs for a superconducting magnet
12/17/1991US5072508 Method of making an inductive-resistive circuit element
12/12/1991WO1991019306A1 Automated method for the manufacture of small implantable transponder devices
12/12/1991WO1991019303A1 High frequency coil and method of manufacturing the same
12/12/1991WO1991019302A1 Automated method for the manufacture of transponder devices
12/12/1991DE4117878A1 Miniature planar magnetic element e.g. induction coil or transformer - is formed by layers of insulating and magnetic material on either side of coil
12/11/1991EP0460506A2 Electric coil device for use as a transformer or the like
12/11/1991EP0460218A1 Construction of armature of electromagnetic brake
12/11/1991EP0459994A1 Process for continuous coating of wires and use of the wires obtained
12/10/1991US5072205 Wound magnetic core
12/10/1991US5071509 Forming electroconductive film, etching, then forming dielectric film, etching; miniaturization
12/04/1991EP0370067B1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording
12/04/1991EP0215003B1 Outside-in winding apparatus
12/03/1991US5068959 Method of manufacturing a thin film head
11/1991
11/28/1991WO1991018405A1 Method of producing permanent magnets by polar anisotropic orientation molding
11/27/1991EP0457933A1 Coil bobbin
11/26/1991US5068147 Soft magnetic thin film comprising alternate layers of iron carbide with either iron, iron nitride or iron carbon-nitride
11/26/1991US5068022 Process for sputtering multilayers for magneto-optical recording
11/26/1991US5067990 Iron, rare earth element boride substrate with phosphate coatings
11/20/1991CN1056370A Dies for extrusion moulding
11/20/1991CN1056369A Resin bound type magnet and its production process
11/19/1991WO1991018404A1 Magnetic cores utilizing metallic glass ribbons and mica paper interlaminar insulation
11/19/1991US5066552 Low noise thin film metal alloy magnetic recording disk
11/19/1991US5065497 Apparatus for making a superconducting magnet for particle accelerators
11/19/1991US5065496 Process for making a superconducting magnet coil assembly for particle accelerators
11/12/1991US5065128 Hermetically sealed high-pressure solenoid coil and method
11/12/1991US5063654 Method for making packets of amorphous metal strip for transformer-core manufacture
11/12/1991CA1291868C Permanent magnet and process for producing the same
11/06/1991EP0455113A2 Fe based soft magnetic alloy, magnetic material containing same, and magnetic apparatus using the magnetic materials
11/06/1991CN1056015A Prescription and manufacture of permanent-magnetic cd rare-earth alloy
11/05/1991US5063011 Doubly-coated iron particles
11/05/1991US5063004 Fabrication of permanent magnet toroidal rings