Patents for H01F 27 - Details of transformers or inductances, in general (43,362)
06/1985
06/11/1985US4521955 Method of making a ducted dry type transformer
06/11/1985US4521954 Method for making a dry type transformer
06/11/1985CA1188765A1 Electrical transformer
06/04/1985US4520556 Methods for assembling a transformer core
06/04/1985CA1188378A1 Pressurizable telephone load coil assembly
05/1985
05/29/1985EP0143023A1 Casing for the magnetic circuit of ignition transformers for vehicles and method for manufacturing the same
05/29/1985EP0142972A1 An evaporation cooled gas insulated electrical apparatus
05/28/1985US4520335 Transformer with ferromagnetic circuits of unequal saturation inductions
05/22/1985EP0142175A2 Ignition coil for an internal combustion engine
05/21/1985US4518942 Electric machine, such as transformer choke, constant-voltage regulator or the like
05/21/1985US4518941 Pulse transformer for switching power supplies
05/21/1985US4518114 Dip soldering apparatus and method
05/15/1985EP0141296A1 Circuit arrangement for the wiring of high power transformers
05/14/1985CA1186873A1 Processing amorphous metal into packets by bonding with low melting point material
05/08/1985EP0140269A1 End mounting for an electrical high voltage cable
05/07/1985CA1186759A1 Disk coil winding of interwound single or double coils
04/1985
04/30/1985US4514714 Noise-reduction device for stationary induction apparatus
04/30/1985US4514713 Inductive ballast coated with an insulation layer and method of coating the ballast
04/30/1985CA1186356A1 Resistor insertion fuse
04/24/1985EP0137867A1 Fixing device for wound toroidal cores
04/23/1985US4513274 For use in electrical AC current
04/23/1985US4512387 Power transformer waste heat recovery system
04/23/1985CA1186069A1 Electrical reactor construction
04/16/1985US4511871 Modified deflection yoke coils having shootback windings
04/10/1985EP0136332A1 Wire coil assembly for matrix print head and manufacturing method.
04/09/1985US4510478 Coil body
04/09/1985US4510476 High voltage isolation transformer
04/09/1985US4510475 Disk coil winding of interwound single or double coils
04/02/1985US4509109 Electronically controlled coil assembly
04/02/1985US4509032 Mains transformer
04/02/1985US4509024 For use in an electrified railroad
03/1985
03/28/1985WO1985001387A1 Ferrite choke coil assembly
03/26/1985US4507637 Coil for electric motor
03/26/1985US4507636 Neutral point plate of three-phase transformer for large secondary currents
03/26/1985CA1184621A1 Transformer, and method of manufacture
03/20/1985EP0134556A1 An impedance element
03/20/1985EP0134525A1 Electrical high-tension feed-through for an electrical apparatus enclosed in a housing
03/19/1985US4506248 Stacked amorphous metal core
03/12/1985US4504813 Energy saving wound core transformer
03/12/1985US4504812 Spherical transformer apparatus
03/12/1985US4503605 Method of making a cellulose-free electrical winding
03/06/1985EP0133661A2 Small transformer
03/05/1985US4503413 Spool for transformer in power supply device
03/05/1985US4502320 Method and apparatus for diagnosing oil-filled electric apparatus
02/1985
02/26/1985US4502032 Ebullition cooled transformer
02/26/1985US4501123 Cooling apparatus for machinery
02/20/1985EP0133220A2 Electric conductor
02/19/1985US4500833 Switched mode power supply transformer
02/19/1985US4500832 Electrical transformer
02/19/1985CA1182876A1 Electrical inductive apparatus
02/13/1985EP0132912A1 Ebullition-cooled transformer
02/12/1985US4498992 Heating, adsorption, chilling and centrifuging
02/05/1985US4498067 Small-size inductor
02/05/1985US4497387 Transformer with smooth-walled tank
01/1985
01/29/1985US4496926 Molded coil structure
01/29/1985US4496925 Stepped iron core for static or dynamic electric machines
01/29/1985US4496924 Pulse transformer having conductive shield around magnetic core material
01/29/1985US4496821 Transformer for robot arms
01/29/1985CA1181850A1 Method and apparatus for diagnosing oil-filled electric apparatus
01/23/1985EP0131700A2 Switch mode transformer having a ferrite core
01/22/1985CA1181481A1 Transformer for use in a static inverter
01/15/1985US4494167 Inductor
01/15/1985US4494102 In an electrical transformer
01/15/1985US4494101 Electrical winding on fixed-mount laminated iron core subject to shaking
01/15/1985US4494099 High-frequency coil structure
01/15/1985US4493138 For forming precisely spaced grooves
01/15/1985CA1181013A1 Noise-reduction device for stationary induction apparatus
01/09/1985EP0130902A2 Inductive electronic component for transmission by flat contacts
01/09/1985EP0130276A1 Static induction device
01/08/1985US4492944 Transformer winding
01/08/1985US4492314 For resisting deflections of a tank wall
01/03/1985WO1985000072A1 Inductive element, particularly repeater
01/02/1985EP0130124A1 High voltage isolation transformer
01/02/1985EP0129656A1 Coil bobbin
01/01/1985US4491819 Magnetically biased inductor
01/01/1985US4491818 Pickup coil assembly with coaxial feed
01/01/1985US4491817 Sheet-wound transformer
12/1984
12/27/1984EP0129118A1 Three-phase reactor with an annular yoke member at the lower and upper side
12/27/1984CA1180073A Vapor cooled electrical inductive apparatus
12/25/1984US4490844 Low frequency transformer
12/25/1984US4490706 Electronic parts
12/18/1984US4489298 Insulating structure for magnetic coils
12/18/1984US4489294 Starter solenoid terminal cover
12/11/1984US4488136 Combination transformer with common core portions
12/11/1984US4488135 Transformer for welding gun
12/11/1984US4488134 Transformer with windings completely embedded in cast resin
12/11/1984CA1179423A1 Device and method for utilization of heat due to losses in transformers or choke coils which are internally cooled by a liquid
12/06/1984WO1984004849A1 Active current transformer
12/05/1984EP0127119A1 Electomagnetic appliance for high-frequency power circuits, particularly a transformer or reactive coil
12/05/1984EP0126734A1 Ignition coal for ignition devices of internal combustion engines.
12/04/1984US4486730 Disc coil winding of interwound single or double coils
12/04/1984CA1179028A1 Support device for the horizontal transport of inverted current transformers
11/1984
11/28/1984EP0126451A1 Two-part, three-legged core
11/27/1984US4485368 Electrical shunt reactor coil
11/27/1984US4485367 Cooling apparatus for a gas insulated transformer
11/27/1984US4485289 Welding system
11/20/1984US4484171 Shielded transformer
11/20/1984US4484170 Dot matrix print head solenoid assembly
11/20/1984US4484169 Transformer apparatus with -superimposed insulated switch and transformer units
11/20/1984CA1178349A1 Methods and apparatus for assembling a transformer core