| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
|---|
| 10/14/1981 | EP0037796A1 Current transformer having fluid insulant |
| 10/13/1981 | US4295113 Sheet-wound transformer or reactor |
| 10/13/1981 | US4295112 Residual current transformer |
| 10/07/1981 | EP0037367A1 Gas or liquid insulated measuring transformer |
| 10/07/1981 | EP0037366A1 Current transformer with gas or fluid insulation |
| 10/07/1981 | EP0037280A1 Improvements in or relating to dielectric fluid |
| 10/07/1981 | EP0037090A1 High-power transformer with a liquid-cooled case |
| 10/07/1981 | EP0037089A1 High-power transformer with a liquid-cooled case |
| 10/06/1981 | US4293433 Perchloroethylene dielectric fluid containing pyrrole and phenol |
| 10/06/1981 | CA1110336A1 Current transformer |
| 09/30/1981 | EP0036614A1 Ignition coil for combustion engines, particularly for engines with electronic ignition, and process for its manufacture |
| 09/23/1981 | EP0036245A1 Method of winding coils |
| 09/23/1981 | EP0036243A1 Bushing well |
| 09/22/1981 | US4291292 Electric coil lead attachment means and method |
| 09/17/1981 | WO1981002648A1 Low-loss reactor |
| 09/16/1981 | EP0035964A1 Induction disk winding |
| 09/09/1981 | EP0035210A1 Device for insulating and mechanically mounting components in oil filled electrical appliances |
| 09/09/1981 | EP0035180A2 Circuit arrangement for increasing the inductance of a transformer |
| 09/08/1981 | US4288772 Dielectric liquid impregnated with gases for use in transformers |
| 09/01/1981 | US4287545 Differential transformer |
| 09/01/1981 | CA1108253A1 Adjustable transformer |
| 08/18/1981 | US4283842 Method of making an electrical inductive apparatus |
| 08/18/1981 | US4283840 Method for manufacturing a support construction for the winding in an electrical machine |
| 08/18/1981 | CA1107425A1 Porous encapsulating composition for electrical apparatus |
| 08/18/1981 | CA1107359A1 Transformer with a liquid cooled case and a method for making the liquid cooled case |
| 08/18/1981 | CA1107358A1 Encapsulated current transformer |
| 08/12/1981 | EP0033699A2 Method and device for assembling a magnetic circuit by using an adhesive |
| 08/11/1981 | US4283699 Holder for an electromagnetic coil |
| 08/11/1981 | CA1106926A1 Reactor |
| 08/05/1981 | EP0033295A2 Insulating tape for the manufacture of an insulating jacket for electric conductors impregnated with a thermosetting curing mixture of epoxy resin and acid anhydride |
| 08/05/1981 | EP0033142A1 Process for the electrical connection and insulation of an electrical element |
| 08/04/1981 | US4282567 Modified power transformer for self-oscillating converter regulator power supply |
| 07/29/1981 | EP0032571A1 Process for connecting electrical taps to an electrical element |
| 07/28/1981 | US4281214 Ignition coil cover |
| 07/28/1981 | US4280270 Accelerated ageing |
| 07/28/1981 | CA1106007A1 Device for the prestressing of concentric cylinders |
| 07/21/1981 | CA1105603A1 Flameproof, weatherproof enclosures for electrical equipment |
| 07/15/1981 | EP0031920A2 Soldering terminal for securing electrical conducting wires |
| 07/07/1981 | US4277639 High-voltage installation including heavy electrical apparatus suspended by insulator means |
| 07/07/1981 | US4277534 Powdered transformer wire coating |
| 07/07/1981 | US4277530 Instantaneous bonding of two sheets without creating stresses |
| 07/07/1981 | CA1104673A1 Electrical inductive apparatus |
| 07/07/1981 | CA1104671A1 Transient voltage distribution improving line shield for layer wound power transformer |
| 07/01/1981 | EP0031061A2 Blocking filter for appliances with carrier frequency utilisation in low-tension networks |
| 06/30/1981 | US4276530 Vapor-cooled electrical apparatus |
| 06/24/1981 | EP0030738A1 Ballast support for fluorescent lamps |
| 06/24/1981 | EP0030737A1 Ballast for gaseous discharge lamps |
| 06/23/1981 | US4275372 Protected electrical inductive apparatus |
| 06/17/1981 | EP0030338A1 Insulated electric conductor for windings of transformers and reactive coils |
| 06/16/1981 | US4274136 Bobbin structure for high voltage transformers |
| 06/16/1981 | US4273406 Electrical cord adapter |
| 06/16/1981 | CA1103319A1 Current transformer |
| 06/16/1981 | CA1103234A1 Radiator assembly for fluid filled electrical apparatus |
| 06/10/1981 | EP0029888A1 Method of producing a conductive wire |
| 06/09/1981 | US4272749 Reactor core of insulated iron powder |
| 06/02/1981 | US4271343 Gas-tight molded casing for an electrical apparatus |
| 05/28/1981 | WO1981001479A1 The cancelling of vibrations transmitted through a fluid in a containing vessel |
| 05/26/1981 | US4270112 Normal conductive or superconductive magnet coil |
| 05/26/1981 | US4270111 Electrical inductive apparatus |
| 05/26/1981 | CA1101979A1 Lamp ballast attachment device |
| 05/13/1981 | EP0028494A1 Method for forming laminations for transformer cores |
| 05/12/1981 | US4267508 Apparatus for non-contact measurement of distance from a metallic body using a detection coil in the feedback circuit of an amplifier |
| 05/12/1981 | US4267404 Supporting device for toroidal coil having integral terminal housings |
| 05/12/1981 | US4267400 Seismic bushing |
| 05/12/1981 | US4267399 Transformer pad with cable protective sleeve |
| 05/12/1981 | US4266602 Heat exchanger for cooling electrical power apparatus |
| 05/12/1981 | CA1101086A1 Induction voltage transformer |
| 05/06/1981 | EP0028034A1 Coil for electric apparatus or electric machine |
| 05/05/1981 | US4266269 Fly-back transformer |
| 05/05/1981 | CA1100585A1 Polyphase transformer of high mechanical resistance |
| 04/30/1981 | WO1981001219A1 Electric winding for a transformer,a self or similar |
| 04/30/1981 | WO1981001218A1 An inductance coil having a core of magnetic material |
| 04/21/1981 | US4263479 Terminated inductive coil assembly |
| 04/15/1981 | EP0026871A1 Core for electromagnetic induction device |
| 04/14/1981 | US4262272 Ignition coil |
| 04/08/1981 | EP0026375A1 Transformer producing the high tension for an ignition spark |
| 04/08/1981 | EP0026373A1 Winding structure for transformers and inductance coils with one or more windings encapsulated in resin |
| 04/07/1981 | US4260975 Transformer with terminal board support and clamping-mounting structure |
| 04/01/1981 | EP0026104A1 Ferrite core half and devices using such core halves |
| 04/01/1981 | EP0025951A1 Single-phase transformer having windings encapsulated in resin |
| 03/31/1981 | US4259654 Flux control in tape windings |
| 03/25/1981 | EP0025605A1 Inductance device |
| 03/24/1981 | US4258347 Magnet coil |
| 03/24/1981 | CA1098187A1 Vaporization cooled and insulated electrical inductive apparatus |
| 03/17/1981 | US4257027 Transformer bobbin assembly |
| 03/17/1981 | US4257025 Laminated metallic plates for supporting core leg in inductive electrical devices to determine magnetic circuit |
| 03/17/1981 | US4255868 Method and device for optimally stabilizing the windings of transformers and chokes |
| 03/17/1981 | US4255849 Method for constructing a superconducting magnet winding |
| 03/11/1981 | EP0024934A1 Power transformer |
| 03/10/1981 | US4255735 Precision injection-molded coil form |
| 03/04/1981 | EP0024319A1 Process for making E-shaped core laminations and I-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps |
| 03/03/1981 | US4254231 High solids wire coating compositions for transformers |
| 02/24/1981 | CA1096452A1 Vaporization cooled transformer |
| 02/12/1981 | EP0020458A4 Insulation of electrical apparatus with a synthetic transformer oil. |
| 02/10/1981 | US4250479 Transformer bobbin assembly |
| 02/10/1981 | CA1095219A1 Bobbin and method of making terminated bobbin coil |
| 02/03/1981 | US4249229 Transformer having novel multiple winding and support structure and method of making same |
| 02/03/1981 | US4249153 Ring transformer for resistance butt welders |
| 02/03/1981 | US4248201 Molded ignition device |
| 02/03/1981 | CA1095155A1 Miniature multi-impedance transformer module |