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Class Information
Number: 336/12
Name: Inductor devices > Polyphase > Interconnected windings
Description: Subject matter wherein the claimed subject matter sets forth specific electrical connections between plural inductor devices which devices comprise a structural unit, so that the devices may be incorporated in a plural phase system as an operating unit.










Patents under this class:

Patent Number Title Of Patent Date Issued
8497755 Hybrid transformer with transformation and improved harmonics functions, unbalanced current, and a power supply system thereof Jul. 30, 2013
8274349 Voltage regulation system Sep. 25, 2012
8013702 Versatile distribution transformer Sep. 6, 2011
8013703 Multi-parallel magnetic-field cancellation type transformer Sep. 6, 2011
8009003 Method for powering a magnetic coupler and device for powering an electric dipole Aug. 30, 2011
7990242 Transient voltage and harmonic currents quashing (THQ) transformers, transformer winding topology, and method of making the same Aug. 2, 2011
7880575 Coil bus for a transformer Feb. 1, 2011
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
7752735 Coil bus transformer and a method of manufacturing the same Jul. 13, 2010
7750782 Nine-phase autotransformer Jul. 6, 2010
6912921 Torque detecting device Jul. 5, 2005
6879232 Wide ratio autotransformer-type current ranging Apr. 12, 2005
6841847 3-D spiral stacked inductor on semiconductor material Jan. 11, 2005
6806803 Transformer winding Oct. 19, 2004
6326877 Transformer coil support structure Dec. 4, 2001
6323602 Combination equalizing transformer and ballast choke Nov. 27, 2001
6208230 Transformer for cycloconverter Mar. 27, 2001
6169674 Transformer, system and method to control harmonic distortion Jan. 2, 2001
5982262 Phase shifting transformer with low zero phase sequence impedance Nov. 9, 1999
5929738 Triple core toroidal transformer Jul. 27, 1999
5801610 Phase shifting transformer with low zero phase sequence impedance Sep. 1, 1998
5557249 Load balancing transformer Sep. 17, 1996
5543771 Phase shifting transformer or autotransformer Aug. 6, 1996
5537089 Three phase transformer with reduced harmonic currents Jul. 16, 1996
5534837 Orthogonal-field electrically variable magnetic device Jul. 9, 1996
5446311 High-Q inductors in silicon technology without expensive metalization Aug. 29, 1995
5416458 Power distribution transformer for non-linear loads May. 16, 1995
5331303 Power transformer for cycloconverters Jul. 19, 1994
5182535 Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding Jan. 26, 1993
5177460 Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings Jan. 5, 1993
5057808 Transformer with voltage balancing tertiary winding Oct. 15, 1991
5003277 Phase-shifting transformer with a six-phase core Mar. 26, 1991
4853664 Three-phase transformer for cycloconverter Aug. 1, 1989
4837497 Variable transformer, reactor and method of their control Jun. 6, 1989
4831352 Rectifier transformer May. 16, 1989
4639610 Rotating flux transformer Jan. 27, 1987
4638177 Rotating flux transformer Jan. 20, 1987
4513243 Core form transformer for selective cancellation of subsynchronous resonance Apr. 23, 1985
4507636 Neutral point plate of three-phase transformer for large secondary currents Mar. 26, 1985
4326181 High voltage winding for dry type transformer Apr. 20, 1982
4274071 Three-phase ferroresonant transformer structure embodied in one unitary transformer construction Jun. 16, 1981
4174509 Furnace transformer having a low-voltage internally-connected delta winding Nov. 13, 1979
4158123 Series reactor Jun. 12, 1979
4156897 Apparatus for supplying direct current from a three-phase alternating-current source May. 29, 1979
4129820 Variable reactance transformer Dec. 12, 1978
4112403 Saturated reactor arrangements Sep. 5, 1978
4106089 Alternating current power dividing or combining system Aug. 8, 1978
3996444 Apparatus for welding rolled seams Dec. 7, 1976











 
 
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