Patents
Patents for H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
03/1982
03/23/1982US4320645 Apparatus for fabricating electrical equipment
03/23/1982CA1120219A1 Process for producing electric windings
03/16/1982US4320427 Wear-resistant magnetic heads
03/16/1982US4320373 Power transformer with high coupling coefficient
03/10/1982EP0046934A1 Finishing machine for ferrite pot cores
03/02/1982US4317700 Method of fabrication of planar bubble domain device structures
02/1982
02/24/1982EP0046310A1 Axial air gap motor
02/24/1982EP0046279A2 Method of manufacturing annular tape cores for protective interrupters of fault currents
02/24/1982EP0046165A2 Method of fabrication of planar bubble domain device structures
02/23/1982US4317006 Load coil
02/23/1982US4316923 Precision dielectric filled ferrite toroid for use in microwave devices
02/23/1982CA1118666A1 Method for forming a liquid phase epitaxial film on a wafer
02/18/1982WO1982000541A1 Modified resonant tag circuit constructions and fabrication processes therefor
02/17/1982EP0046090A1 Process fpr producing a magnetic recording medium
02/16/1982CA1118326A1 Magnetic core comprised of low-retentivity amorphous alloy
02/09/1982US4314894 Method of making a magnetic memory layer
02/04/1982WO1982000286A1 Body positioning and driving apparatus
02/03/1982EP0045055A1 Apparatus for forming an axial parallel adhesive seam in insulating cylinders for large transformers
02/03/1982EP0045035A1 Device for assembling transformer and choke cores
02/02/1982CA1117260A1 Coating solution for electrical steels
01/1982
01/27/1982EP0044620A1 Winding apparatus
01/26/1982US4312683 Suppression of induced magnetic anisotropy
01/19/1982US4311979 Layered transformer winding
01/13/1982EP0043644A2 Method of making a magnetic recording medium and a ceramic crucible for such a method
01/13/1982EP0043558A1 Method of manufacturing a miniature adjustable inductance and inductance made by this method
01/05/1982US4309519 Process for producing flyback transformer
12/1981
12/29/1981US4308592 Patterned kill of magnetoresistive layer in bubble domain chip
12/29/1981US4308513 Etched magnetic coil
12/29/1981US4308512 Modular air core coil inductance assembly
12/29/1981US4308003 Device for adjusting the inductance of a coil
12/23/1981EP0042118A1 Method of wrapping a conductor curved in three dimensions
12/22/1981CA1114951A1 Pedestal bubble domain chip and processes for making same
12/15/1981US4305435 Winding and cutting device
12/01/1981CA1113577A1 Switchable magnetic device and method of manufacturing same
11/1981
11/25/1981EP0040437A2 Method of manufacturing magnetic recording medium
11/25/1981EP0040197A1 A winding machine for winding elongate members or cores and an exchangeable cassette for the wire magazine for such a machine.
11/24/1981US4301975 Device for supplying a pair of wires to a rotating wire guide in a coil winding machine
11/18/1981EP0039901A1 Electric shunt reactor and automatic machine for cutting laminations
11/11/1981EP0039463A1 Magnetic garnet film and manufacturing method therefor
11/10/1981US4299680 Method of fabricating magnetic bubble memory device having planar overlay pattern of magnetically soft material
11/10/1981US4299678 Magnetic target plate for use in magnetron sputtering of magnetic films
11/04/1981EP0038957A1 Rolled core
11/04/1981EP0038883A1 Covered coil, process for manufacturing the same, and device for manufacturing the same
11/03/1981US4298436 Multilayer embedded conductor structure
10/1981
10/27/1981US4297388 Process of making permanent magnets
10/27/1981US4297190 By using a thermoconductive pipe
10/27/1981US4296545 Casing hook used to impregnate choke or transformer
10/21/1981EP0037816A1 A wire magazine for winding wire for use in a winding machine for the winding of elongate, preferably endless annular members or cores.
10/20/1981US4295988 Magneto-optic Bi1 Lu2 Fe5 O12 crystals
10/14/1981EP0037531A2 Method of manufacturing an electrical winding
10/06/1981US4293371 Method of making magnetic film-substrate composites
09/1981
09/29/1981US4291840 Device for the winding of coils
09/29/1981CA1109778A1 Method for the continuous spiral winding of a tape onto an elongated body and apparatus for performing same
09/23/1981EP0036245A1 Method of winding coils
09/22/1981US4291292 Electric coil lead attachment means and method
09/22/1981US4291091 Bubble memory optimization by adjusting properties of quartz film
09/22/1981US4290843 Epitaxial growth of magnetic memory film on implanted substrate
09/22/1981US4290827 Annealing, tempering in magnetic cross-field
09/16/1981EP0035894A1 Process for producing a magnetic recording medium
09/16/1981EP0035870A1 Method of producing a magnetic recording medium
09/09/1981EP0035210A1 Device for insulating and mechanically mounting components in oil filled electrical appliances
09/08/1981US4288041 Shuttleless toroidal core winder
09/08/1981CA1108757A1 Method of manufacturing a magnetic device
09/01/1981US4287573 Method and means for coupling an elongated magnetic device
09/01/1981US4287225 By vapor deposition of a layer of an alloy of samarium and cobalt
09/01/1981CA1108253A1 Adjustable transformer
08/1981
08/26/1981EP0034552A1 Method and device for multipole magnetization of a sheet material
08/18/1981US4283840 Method for manufacturing a support construction for the winding in an electrical machine
08/18/1981CA1107425A1 Porous encapsulating composition for electrical apparatus
08/18/1981CA1107358A1 Encapsulated current transformer
08/18/1981CA1107057A1 Water based selectable charge magnetic inks
08/12/1981EP0033699A2 Method and device for assembling a magnetic circuit by using an adhesive
08/12/1981EP0033602A1 A flywinder
08/11/1981US4283247 Liquid phase epitaxial process for magnetic garnet
08/05/1981EP0033295A2 Insulating tape for the manufacture of an insulating jacket for electric conductors impregnated with a thermosetting curing mixture of epoxy resin and acid anhydride
08/05/1981EP0033196A1 Winding apparatus
08/05/1981EP0033142A1 Process for the electrical connection and insulation of an electrical element
07/1981
07/29/1981EP0032571A1 Process for connecting electrical taps to an electrical element
07/28/1981US4280270 Accelerated ageing
07/28/1981CA1106076A1 Inductive circuits fabrication process
07/28/1981CA1105743A1 Alloy for magnetoresistive element and method of manufacturing the same
07/23/1981WO1981002000A1 Shuttle drive assembly
07/21/1981US4280195 Planar and near planar magnetic bubble circuits
07/21/1981US4279707 Electroplating of nickel-iron alloys for uniformity of nickel/iron ratio using a low density plating current
07/21/1981US4279102 Method of manufacturing narrow track ferrite head cores
07/08/1981EP0031576A1 Method of casting-in an electrical appliance
07/07/1981US4277534 Powdered transformer wire coating
07/07/1981US4277530 Instantaneous bonding of two sheets without creating stresses
06/1981
06/30/1981US4276102 Heat shrinkage of polymeric wrapping
06/24/1981EP0030901A1 Machine for making flat or conical disk-shaped windings for electric motors
06/24/1981EP0030634A1 Nickel-X/gold/nickel-X conductors for solid state devices
06/23/1981US4274935 Magnetic memory layer
06/23/1981US4274603 Machine for winding wire coils
06/23/1981US4274476 Method and apparatus for removing heat from a workpiece during processing in a vacuum chamber
06/16/1981US4273610 Method for controlling the resonance frequency of yttrium iron garnet films
06/16/1981US4273609 Rinse melt for LPE crystals
06/09/1981US4272348 Acrylonitrile copolymer crosslinked on surface
06/09/1981US4272347 Vacuum deposition
06/09/1981US4272310 Method of making a bonded structure of magnet wire
06/09/1981US4272033 Device for forming taps when winding electrical coils