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Class Information
Number: 336/5
Name: Inductor devices > Polyphase
Description: Inductor devices comprising plural inductor means arranged structurally and/or by internal connection for use in a two or more phase electrical system.










Sub-classes under this class:

Class Number Class Name Patents
336/10 Adjustable inductor 28
336/12 Interconnected windings 50


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8659382 Non-encapsulated-winding stereo wound-core dry-type amorphous alloy transformer Feb. 25, 2014
8653929 Stereo-triangular wound-core power transformer with a voltage class more than or equal to 110kV Feb. 18, 2014
8614614 Submersible dry distribution transformer Dec. 24, 2013
8502631 Three-phase line reactor with skew yoke core design Aug. 6, 2013
8497755 Hybrid transformer with transformation and improved harmonics functions, unbalanced current, and a power supply system thereof Jul. 30, 2013
8395469 Multi-phase transformer Mar. 12, 2013
8390414 Multi-phase transformer Mar. 5, 2013
8384371 Various methods and apparatuses for an integrated zig-zag transformer Feb. 26, 2013
8373529 Amorphous metal continuous flux path transformer and method of manufacture Feb. 12, 2013
8154369 Method and device for controlling of a magnetic flux Apr. 10, 2012
8058958 Device and method for eliminating transformer excitation losses Nov. 15, 2011
8013702 Versatile distribution transformer Sep. 6, 2011
8013703 Multi-parallel magnetic-field cancellation type transformer Sep. 6, 2011
7990242 Transient voltage and harmonic currents quashing (THQ) transformers, transformer winding topology, and method of making the same Aug. 2, 2011
7969264 Choke device for frequency converter Jun. 28, 2011
7969265 Zigzag autotransformer apparatus and methods Jun. 28, 2011
7948340 Three-phase multi-winding device May. 24, 2011
7880575 Coil bus for a transformer Feb. 1, 2011
7859376 Zigzag autotransformer apparatus and methods Dec. 28, 2010
7834736 Dry type pole-mounted transformer Nov. 16, 2010
7796003 Multi-parallel magnetic-field cancellation type transformer Sep. 14, 2010
7772954 Symmetrical auto transformer wye topologies Aug. 10, 2010
7772953 Symmetrical auto transformer delta topologies Aug. 10, 2010
7692523 Multi-voltage power transformer for the high-voltage electricity transmission network Apr. 6, 2010
7646275 Device and method for eliminating transformer excitation losses Jan. 12, 2010
7633262 Power supply for underground and pad mounted power distribution systems Dec. 15, 2009
7436277 Power transformer Oct. 14, 2008
7369024 Compact dry transformer May. 6, 2008
7330095 Cooled multiphase choke assembly Feb. 12, 2008
7307361 Medium voltage power converter formed using low voltage drives Dec. 11, 2007
7274280 Nine-phase step-up/step-down autotransformer Sep. 25, 2007
7176779 Inductor arrangement Feb. 13, 2007
7112946 Transformer with selectable input to output phase angle relationship Sep. 26, 2006
7049921 Auto-transformer for use with multiple pulse rectifiers May. 23, 2006
7034647 Integrated magnetics for a DC-DC converter with flexible output inductor Apr. 25, 2006
7023311 Overlapped superconducting inductive device Apr. 4, 2006
6930578 Field adjustable phase shifting transformer Aug. 16, 2005
6924438 Epoxy sight bowls for use in power transformers Aug. 2, 2005
6844802 Parallel core electromagnetic device Jan. 18, 2005
6831545 E-I or E-E transformer Dec. 14, 2004
6809620 Transformer core Oct. 26, 2004
6806803 Transformer winding Oct. 19, 2004
6456184 Reduced-cost core for an electrical-power transformer Sep. 24, 2002
6326877 Transformer coil support structure Dec. 4, 2001
6208230 Transformer for cycloconverter Mar. 27, 2001
6169674 Transformer, system and method to control harmonic distortion Jan. 2, 2001
6166531 Three phase to single phase power protection system with multiple primaries and UPS capability Dec. 26, 2000
6147480 Detection of metal disturbance Nov. 14, 2000
6087738 Variable output three-phase transformer Jul. 11, 2000
5982262 Phase shifting transformer with low zero phase sequence impedance Nov. 9, 1999

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