Class 336/211 - CONCENTRIC OR NESTED CORE ELEMENTS

Subclass of Class 336 - Inductor devices
Definition: Inductor devices comprising inductor core structure formed
No. of patents: 24
Last issue date: 06/10/2008

Number	Title	Issue Date
7385466	Differential transmission circuit and common mode choke coil A first transmission line for transmitting a first signal and a second transmission line for transmitting a second signal, which has the reverse phase of the first signal, are connected in series with a common mode choke coil. A third transmission line and fourth tr...	06/10/2008
7375610	Transformer and assembling process thereof A transformer includes a magnetic core assembly, a circuit board, a plurality of pins and at least an interface layer. The magnetic core assembly includes a first magnetic part and a second magnetic part. The circuit board is arranged between the first magnetic part...	05/20/2008
7071807	Laminated windings for matrix transformers and terminations therefor Laminated primary winding for matrix transformers may be assembled from stacked layers of metal foil or stampings having ends of the metal foil or stampings extended successively to make stepped contact areas having as large a contact area as necessary for the appli...	07/04/2006
6907872	Ignition coil apparatus for internal combustion engine An ignition coil apparatus for an internal combustion engine does not generate a discharge between a high-voltage terminal and an iron core even if a high-voltage cable falls off from a high-voltage side connector, and the overall height thereof can be reduced. An i...	06/21/2005
6594166	Step-up transformer A step up transformer has an inert core, primary windings concentrically surrounding the inert core, and secondary windings concentrically surrounding the primary windings, the ratio of secondary windings to primary windings of up to 1,000,000:1. The step...	07/15/2003
6474322	Ignition device for internal combustion engine The invention provides an ignition device of a cylindrical shape for an internal combustion engine, in which device it is possible to improves a productivity of a side core and a center core and to improve the efficiency of converting a magnetic flux toge...	11/05/2002
6168696	Non-knurled induction coil for ionized metal deposition, sputtering apparatus including same, and method of constructing the apparatus An RF induction coil for inductively coupled ionized sputtering applications having at least one extremely smooth surface, on the order of about 30 μm or less, which faces, substantially resides within, or is immediately proximate a plasma field in a spu...	01/02/2001
6018239	Self-powered axial current sensor A self-powered axial current sensor for generating a signal which accurately represents current in a power line includes, in one embodiment, a housing having a bus bar opening of substantially rectangular shape extending longitudinally therethrough. The h...	01/25/2000
5747981	Inductor for an electrical system In one embodiment of the present invention, an inductor comprises a core defining a first electromagnetic path, a second electromagnetic path and a third electromagnetic path, the third electromagnetic path substantially closing the first and second elect...	05/05/1998
5422620	Transformer The so-called delta-phi transformer makes use of the effects of various core materials and air gap sections in the cores on the magnetization curves of core materials. It consists of at least two magnetically separated cores, designated source core SK and...	06/06/1995
5341281	Harmonic compensator using low leakage reactance transformer A harmonic compensator comprises a transformer having low leakage reactance connected between a utility and a load and a signal generator which injects into the transformer a signal having a frequency which cancels undesirable higher order harmonics induc...	08/23/1994
5241293	Flyback transformer including a plated metal coil and having reduced leakage flux A flyback transformer includes at least one primary coil and at least one secondary coil formed thereon. Each primary and secondary coil may be a metal plating coil with an insulating bobbin and a conductor formed thereon. Secondary coils may be formed of...	08/31/1993
5138545	Hybrid high voltage transformer A hybrid high voltage transformer includes three nesting cylindrical coil forms. The inner coil form supports a primary winding and the two outer coil forms support secondary windings that substantially overlie the primary winding. Each of the secondary w...	08/11/1992
5075150	Pack of laminations with projections and depressions in torsionally flexible contact In one embodiment, the pack is torsionally flexible. Pack of laminations comprises laminations which are connected one to another by only a single connection. The single connection is provided by a projection which projects into a depression. The projecti...	12/24/1991
5012179	Flyback transformer with integrally formed resonance capacitor A flyback transformer includes a film wound unit which is composed of a first and second film sheets on which a first and second conductors are formed. A primary coil is formed by the first conductor, and a resonance capacitor which is connected to the pr...	04/30/1991
4967121	Isolating high voltage transformer for video apparatus A high voltage transformer for a video apparatus provides electrical isolation between the primary and secondary windings. The primary winding is wound on a first bobbin while the secondary windings are wound on a second separate bobbin that surrounds the...	10/30/1990
4835497	AC line filter An ac line filter comprises two main cores, at least one auxiliary core disposed between the two main cores, and a pair of windings provided on the main and the auxiliary core. The main cores form shell type closed magnetic paths and enclose the auxiliary...	05/30/1989
4794360	Inductive device having a core of an amorphous material An inductive device comprising a ferromagnetic core which has two approximately U-shaped core halves (9, 11) connected together with their limbs (9', 11'; 9", 11") facing each other so that they enclose a core window (17). Each core half (9, 11) is constr...	12/27/1988
4656449	Field modifying elements for an electromagnet having a substantially C-shaped yoke An electromagnet having a ferromagnetic core comprising at least one substantially C-shaped yoke terminating in pole pieces (1,2) with opposed pole faces (7) separated by an air gap in which a magnetic field suitable for an NMR imaging process is, in use,...	04/07/1987
4471333	Current transformer with a ring-shaped core for use in a high voltage switching device enclosed in a metallic casing A current transformer having at least one ring-shaped core with a secondary winding mounted thereon, and a primary conductor, located within its casing. An inner tube is provided between the ring-shaped core and the primary conductor, one end of the tube ...	09/11/1984
4338657	High-voltage transformer-rectifier device A high-voltage transformer-rectifier device comprising a step-up three-phase transformer with a spatial magnetic circuit made up of three vertical stacks (7) of closed cores (9) insulated from one another and secured in an insulating frame (8), having a c...	07/06/1982
4288773	Amorphous metal ballasts and reactors A lamp ballast has a pair of adjacent gapped "O" magnetic cores made of nested, almost complete loops of amorphous metal strip with the gaps in the loops shaped and arranged under the secondary coil to simulate any type of restricted cross section for sha...	09/08/1981
4031449	Electromagnetically coupled battery charger A solid state electronic battery charger which is electromagnetically coupled to one or more batteries. A charging circuit energizes a drive winding to produce an alternating field received by an associated coupler and operative to convey charging current...	06/21/1977
4024486	Outer locking turn for precut core A precut nested magnetic core having a locking outer turn. The locking turn is formed of magnetic core steel and has a pair of locking slots in one end and a single locking tab in the opposite end. The precut annular core is locked by using the second or ...	05/17/1977

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Class 336/211 - CONCENTRIC OR NESTED CORE ELEMENTS