| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
|---|
| 03/28/1978 | US4081776 Transformer with heat conducting laminate |
| 03/28/1978 | US4080725 Ferromagnetic core with variable shunt air gap and method of making it |
| 03/21/1978 | US4080585 Flat coil transformer for electronic circuit boards |
| 03/14/1978 | US4079324 Pulse transformer, particularly for low-impedance modulators |
| 03/14/1978 | US4079295 Power supply arrangement with minimum interaction between plural loads |
| 03/07/1978 | US4078149 Vapor lift pump for vapor-cooled transformers |
| 02/21/1978 | US4075591 Printed circuit coils |
| 02/21/1978 | US4075590 Bobbin construction for electrical coils |
| 12/27/1977 | US4065740 Electrical coil assembly |
| 12/20/1977 | US4064473 Transformer with windings in helical slots of core |
| 11/29/1977 | US4060784 Electrical inductive apparatus |
| 11/22/1977 | US4059329 Double bushing well with cantilever load supporting legs |
| 11/22/1977 | US4059326 Dry-type instrument transformer with potential tap and connector therefor |
| 11/15/1977 | US4058761 Saturated reactors |
| 11/15/1977 | US4058373 Combustible gas-in-oil detector |
| 11/08/1977 | US4056883 Heated roll inductive heater construction |
| 10/25/1977 | US4055826 Resiliently supported windings in an electrical reactor |
| 10/25/1977 | US4055825 Voltage transformer for high voltage |
| 10/18/1977 | US4054856 Current transformer assembly for dynamoelectric machines |
| 10/18/1977 | US4054351 Connection between a device in a metallic sheath and a transformer |
| 10/04/1977 | US4052685 Current transformer |
| 09/13/1977 | US4048606 Inductive device with bobbin |
| 09/13/1977 | US4048605 Split core current transformer having an interleaved joint and hinge structure |
| 09/13/1977 | US4048604 Magnetic core |
| 09/13/1977 | US4048603 Vaporization cooled transformer |
| 09/13/1977 | US4048460 Method of welding a cover to a container |
| 09/06/1977 | US4047139 Transformers of large capacity for ultra-high voltages |
| 09/06/1977 | US4047138 Power inductor and transformer with low acoustic noise air gap |
| 08/30/1977 | US4045756 Segmented expansion absorber for lifting magnet |
| 08/30/1977 | US4044458 Method of making a power-pack assembly |
| 08/16/1977 | US4042900 Electrostatic shielding of disc windings |
| 08/16/1977 | US4042872 Static converter having partially gapped transformer |
| 08/09/1977 | US4041430 Coil bobbin and matching cover for solenoid assembly |
| 08/09/1977 | US4041364 Electromagnetically shielded electrical converter and an improved electromagnetic shield therefor |
| 08/02/1977 | US4039990 Sheet-wound, high-voltage coils |
| 07/19/1977 | US4036058 Hot spot thermometer |
| 07/12/1977 | US4035751 Device for inducing an electrical voltage |
| 07/12/1977 | US4035717 Electrical transformer utilizing a no load tap changer |
| 07/05/1977 | US4033506 Electrostatic coating guns |
| 06/28/1977 | US4032959 Shielded superconducting inductor device |
| 06/28/1977 | US4032874 Reactor core |
| 06/28/1977 | US4032873 Flow directing means for air-cooled transformers |
| 06/28/1977 | US4032837 Current transformer |
| 06/21/1977 | US4031540 Impedance matching device |
| 06/21/1977 | US4031459 Inductive voltage transformer for a high-voltage metal-clad switch-gear installation |
| 06/14/1977 | US4030057 Inductive voltage transformer |
| 06/07/1977 | US4028654 Battery charger |
| 06/07/1977 | US4028653 Electrical equipment having radial cooling channels with means for guiding cooling fluid through the channels |
| 05/31/1977 | US4027279 Device for attaching leads to a transformer or the like |
| 05/31/1977 | US4027235 Direct current compensation circuit with current threshold detection |
| 05/24/1977 | US4025379 Method of making laminated magnetic material |
| 05/24/1977 | US4024978 Tank for use with electric equipment |
| 05/17/1977 | US4024486 Outer locking turn for precut core |
| 05/17/1977 | US4024449 Intrinsically safe power source with plural conversions |
| 05/10/1977 | US4023091 Apparatus for detecting axial displacements in power windings of electric induction machines |
| 05/10/1977 | US4022635 Modified asphaltite potting composition |
| 05/03/1977 | US4021764 Sheet-wound transformer coils with reduced edge heating |
| 04/26/1977 | US4020375 Dynamoelectric machine coil |
| 04/26/1977 | US4019996 Containing monocyano-phenoxybenzene, -diphenyl or -terphenyl in a liquid |
| 04/26/1977 | US4019572 Radiator assembly for fluid filled electrical apparatus |
| 04/19/1977 | US4019167 Encapsulated transformer |
| 04/12/1977 | US4017815 Impulse voltage distribution improving partial-turn electrostatic shields for disc windings |
| 04/12/1977 | US4017701 Induction heating unit with combined tank circuit and heating coil |
| 04/05/1977 | US4016519 Printed circuit coils |
| 04/05/1977 | US4016478 High-voltage transformer |
| 03/15/1977 | US4012708 Oil immersible current limiting fuse assembly |
| 03/15/1977 | US4012706 Sheet-wound transformer coils |
| 03/08/1977 | US4011535 Vaporization cooled transformer |
| 03/08/1977 | US4010536 Method of adjusting two concentric windings in electrical induction devices |
| 03/01/1977 | US4010437 Fuse holders for transformers |
| 03/01/1977 | US4010436 Electrical inductive apparatus |
| 03/01/1977 | US4010435 Terminals for coil bobbin |
| 02/22/1977 | US4009461 Externally actuated clamping system for transformer windings incorporating a mechanical follow-up device |
| 02/22/1977 | US4009459 Resin-empotted dry-type electromagnet for dusty and gassey locations |
| 02/22/1977 | US4009418 Attachment of heat pipes to electrical apparatus |
| 02/22/1977 | US4009417 Electrical apparatus with heat pipe cooling |
| 02/22/1977 | US4009306 Encapsulation method |
| 02/08/1977 | US4007416 Voltage regulating transformer |
| 01/25/1977 | US4005341 Casing construction for pole type dielectric containing transformer |
| 01/25/1977 | US4005253 Grade-level enclosure for electrical apparatus |
| 01/11/1977 | US4002920 Underground electrical reticulation systems and transformers therefor |
| 01/04/1977 | US4001746 Direct-cooled tape layer winding |
| 01/04/1977 | US4001644 Sudden pressure relay having seismic protection |
| 12/28/1976 | US4000483 Low voltage power transformer |
| 12/28/1976 | US4000482 Transformer with improved natural circulation for cooling disc coils |
| 12/14/1976 | USRE29080 Compensated transformer circuit utilizing negative capacitance simulating circuit |
| 12/07/1976 | US3996544 Cylindrical winding for induction electrical apparatus |
| 12/07/1976 | US3996543 Current transformer |
| 12/07/1976 | US3996444 Apparatus for welding rolled seams |
| 11/23/1976 | US3993937 Circuit for increasing the impedance of a winding wound around two cores made of soft magnetic material |
| 11/16/1976 | US3992691 Electronic circuit board flat coil inductor |
| 11/16/1976 | US3992690 Composite electromagnetic coil |
| 11/02/1976 | US3990031 Electrical bushing containing a full-range current-limiting fuse |
| 11/02/1976 | US3989342 Chambered arc snuffing tube for bushing assembly |
| 10/26/1976 | US3988764 Deep diode solid state inductor coil |
| 10/26/1976 | US3988684 Voltage transformer for an insulated high-voltage switching installation containing several conductors |
| 10/19/1976 | US3987387 Transformer having an insulating body for a winding |
| 10/12/1976 | US3986080 Oil-immersed type flyback transformer device |
| 10/05/1976 | US3984756 Power source for supplying stabilized current to electrical installations |
| 10/05/1976 | US3984490 Phenylcyclohexane formed by cracking dicyclohexylbenzene |