Patents
Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550)
01/1994
01/12/1994EP0577611A1 Inductive power distribution system
01/05/1994EP0577334A2 Partial gap magnetic core apparatus
01/05/1994EP0576493A1 Ignition system without distributor.
01/03/1994CA2096358A1 Partial gap magnetic core apparatus
12/1993
12/23/1993WO1993026062A1 Magnetic circuits for communicating data
12/23/1993WO1993026020A1 Non-contact power transmission apparatus, non-contact signal transmitter, separation type machine using them and control method thereof
12/23/1993DE4215900C1 Difference current detection system for DC fault current - has three or more current conductors arranged symmetrical to centre of sum current transducer core
12/21/1993US5272460 Current and voltage transformer for a metal-encapsulated, gas-insulated high-voltage installation
12/21/1993US5272381 Common mode filtered magnetic connector
12/21/1993US5272350 Rotary coupler effecting power and information exchange
12/16/1993DE4219392A1 Orthopaedic support bandage for knee joint healing process - includes temp-regulated electric heating and/or cooling element and current regulator coupled to programmable microprocessor
12/15/1993EP0238524B2 Current transformer for a static electricity counter
12/09/1993DE4318657A1 Car IC engine ignition system - has diodes for ionisation currents embedded in distributor cap between peripheral and central terminals
12/08/1993EP0573350A1 Rogowski coil
12/07/1993US5268663 Ignition coil assembly directly applied to ignition plug for internal combustion engine
11/1993
11/25/1993DE4215899C1 Difference current detection system - uses annular core with two opposing gaps each with magnetic field sensor enclosing symmetrical current leads
11/24/1993EP0571319A2 Bar core current transformer
11/24/1993EP0570790A2 Box for a transformer for a ground fault current interrupter and transformer
11/23/1993US5264776 Electric vehicle inductive coupling charge port
11/16/1993US5261381 Ignition coil unit for internal combustion engine
11/09/1993US5260678 Fluorescent-lamp leadless ballast with improved connector
11/02/1993US5257611 Ignition coil assembly and method of manufacture thereof
10/1993
10/28/1993WO1993021585A1 Non-contact data and power connector for computer based modules
10/20/1993EP0565964A2 High voltage coil for an ignition transformer
10/20/1993EP0565655A1 Ignition coil for ignition systems of internal combustion engines.
10/20/1993CN1077567A Instrument current transformer for power cables
10/07/1993DE4309214A1 UV light system e.g. for drying paints using adjustable output
10/06/1993EP0563716A1 Device with UV-lamp
10/05/1993CA1322671C Inductive coil structure
10/04/1993CA2093288A1 Rod-core current transformer
09/1993
09/29/1993EP0562921A1 Connecting device without electrical contact
09/29/1993EP0562380A2 Current transformer for sensing current in an electrical conductor
09/23/1993DE4208706A1 Ignition coil for IC engine - has circular inner core on which primary and secondary windings are wound
09/22/1993EP0561717A1 Measuring combination with current sensor and power supply transformer
09/16/1993WO1993018529A1 A high-tension current transformer, with storage production by means of the automatization of the insulation thereof
09/15/1993CN1076151A Hanging spot-welder with transformer
09/08/1993EP0558702A1 Current sensor having a magnetic circuit with an air gap.
09/07/1993US5241941 Ignition coil
09/02/1993DE4305684A1 Electrical cabling e.g. for IC engine ignition coil and fuel injection valve - includes cylinder-head mounted coil or injectors with socket units mating with distribution network on cylinder head cover
09/01/1993EP0558316A1 An inductive loop power transmission system
09/01/1993EP0557378A1 A power supply circuit with integrated magnetic components.
08/1993
08/31/1993US5241293 Flyback transformer including a plated metal coil and having reduced leakage flux
08/25/1993EP0556633A1 Line transformer for television receivers
08/24/1993CA1321616C Ignition system dwell control
08/19/1993WO1993016479A1 Wire wound core
08/18/1993EP0555560A1 Low leakage transformer
08/17/1993US5237140 Transformer
08/10/1993US5235488 Wire wound core
08/03/1993US5233324 Current transformer for sensing current in an electrical conductor
07/1993
07/28/1993EP0552738A1 Separable inductive coupler
07/28/1993EP0552737A1 Weatherized curb-side charger
07/28/1993EP0552736A1 Wall/ceiling mounted inductive charger
07/28/1993CN1074732A A ignition coil assembly
07/22/1993WO1993014509A1 Method for mounting an electrical coil on a magnetic circuit having an air gap
07/22/1993WO1993014508A1 Transformer mounted on vehicle
07/21/1993EP0551555A1 Transformer for mouting in a vehicle
07/20/1993US5229652 Non-contact data and power connector for computer based modules
07/08/1993WO1993013588A1 Five-leg core type three-fold frequency multiplier
07/08/1993WO1993013534A1 Ignition coil for internal combustion engines
07/08/1993WO1993013533A1 Ignition coil assembly and method of manufacture thereof
07/06/1993US5225803 High voltage transformer, notably for an x-ray apparatus
07/06/1993US5225801 Ignition coil device for engine
06/1993
06/29/1993US5223790 Current sensor using current transformer with sintered primary
06/24/1993DE4142522A1 Winding process for HV transformer for TV receiver - winding formed in grooves in former with support for diodes on outer surface.
06/23/1993EP0547563A1 Printed circuit board antenna
06/23/1993EP0453518B1 Current transformer arrangement for three-wire three-phase systems, especially to detect the actual current for controlled dc consumers powered via current rectifiers
06/16/1993CN1073309A High energy dissipation harmonic reactor
06/09/1993CN1073037A Non-linear inductor with magnetic field reduction
06/01/1993US5216402 Separable inductive coupler
05/1993
05/26/1993EP0406277B1 Automatically guided push-pull inverter
05/25/1993US5214392 Multilayered ceramic type electromagnetic coupler apparatus
05/19/1993CN1020783C Ignition coil
05/19/1993CN1020782C 点火线圈 Ignition coils
05/18/1993CA1317998C Electromagnetic contactor with lightweight wide range current transducer
05/17/1993EP0598727A4 Protective snap-together enclosure for current transformers.
05/13/1993WO1993009345A1 Ignition coil for ignition systems of internal combustion engines
05/12/1993EP0540750A1 Apparatus for feeding power in non-contact way
05/08/1993CA2055109A1 Explosion resistant, oil insulated, current transformer
04/1993
04/29/1993DE4134941A1 TV receiver line deflector with drive transformer - has E=shaped or cup-shaped core with legs longer than width of coils wound on legs
04/28/1993EP0470958B1 A contactless travel measuring system
04/14/1993EP0536811A2 Ignition coil-incorporated distributor for internal combustion engines
04/13/1993US5202621 Current transformer arrangement for three-wire three-phase systems to detect the actual current value for controlled dc loads powered via power converters
04/13/1993US5202584 High energy dissipation harmonic filter reactor
04/08/1993DE4132700A1 Manufacture of multiple ignition coil units - producing common housing with inset power rail receiving preassembled coil units
04/08/1993DE4132699A1 Multiple ignition coil unit - has coil units with primary and secondary parts mounted on single body
04/07/1993CN1070764A Current sensor comprising magnetic circuit with air gap
04/01/1993WO1993006491A1 Current sensor having a magnetic circuit with an air gap
03/1993
03/31/1993CN1070528A Diode split high voltage transformer for television receiver
03/17/1993EP0531554A1 Transformer, for instance symmation transformer
03/16/1993US5193514 Induction discharge type ignition device for an internal combustion engine
03/11/1993DE4129678A1 Divide split high voltage transformer for high-scan TV receiver with HV of 35kV
03/10/1993EP0530612A1 Side register and overload control in a sheet printing machine
03/10/1993EP0530542A1 Circuit for inductive energy transmission
03/10/1993EP0530347A1 Shunt coil controlled transformer
03/09/1993US5192832 Electromagnet insert for data current coupler
03/09/1993US5191872 Ignition coil unit for an internal combustion engine
03/04/1993WO1993004557A1 Split-configuration high-voltage diode transformer for a tv receiver
03/04/1993DE4129252A1 High frequency control signal transfer arrangement along hollow earth boring rods - has signal transfer transformer windings on each end of pipe sections making up rod, with tuning capacitances in connecting leads of each pipe section
03/03/1993EP0529905A1 High energy dissipation harmonic filter reactor
03/03/1993EP0529418A1 Diode split high voltage transformer for a television receiver