Electric Transformer Component
US-2015380150-A1 · Dec 31, 2015 · US
Coupled inductor
US9799440B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9799440-B2 |
| Application number | US-201414213178-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2014 |
| Priority date | Mar 29, 2013 |
| Publication date | Oct 24, 2017 |
| Grant date | Oct 24, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A coupled inductor comprises an annular core 1 and coils 2 a, 2 b wound around the core. The annular core 1 includes a sendust core having a maximum differential permeability that is equal to or greater than 30.
First claim
Opening claim text (preview).
What is claimed is: 1. A coupled inductor comprising: an annular core including a sendust core having a maximum differential permeability that is equal to or greater than 30 wherein the sendust core is formed from a binder of silicon resin and a lubricant with an aqueous atomized powder having an average particle diameter of 40 um; and a coil wound around the core, wherein the coil includes two coils wound around the core such that magnetic fluxes generated from the two coils are oriented in opposite direction to each other, wherein a coupling coefficient of the coupled inductor formed by the two coils is equal to or smaller than 0.8. 2. The coupled inductor according to claim 1 , wherein the annular core is formed by combining a plurality of cores. 3. The coupled inductor according to claim 2 , wherein the annular core comprises two U-shaped core members abutting end faces thereof with each other. 4. The coupled inductor according to claim 2 , wherein the annular core comprises a gap formed between opposing end faces of respective cores. 5. The coupled inductor according to claim 4 , wherein the gap is formed by disposing a spacer made of ceramic plate between the opposing end faces of the respective cores. 6. The coupled inductor according to claim 1 , wherein the coil comprises an edgewise winding. 7. A coupled inductor comprising: an annular core including a sendust core having a maximum differential permeability that is equal to or greater than 30; and a coil wound around the core, wherein the coil includes two coils wound around the core such that magnetic fluxes generated from the two coils are oriented in opposite direction to each other, wherein the sendust core is formed from a binder of silicon resin and a lubricant with an aqueous atomized powder having an average particle diameter of 40 um. 8. A coupled inductor according to claim 1 , wherein the two coils are disposed in parallel to each other in the same axis direction.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9799440B2 cover?
- A coupled inductor comprises an annular core 1 and coils 2 a, 2 b wound around the core. The annular core 1 includes a sendust core having a maximum differential permeability that is equal to or greater than 30.
- Who is the assignee on this patent?
- Tamura Seisakusho Kk
- What technology area does this patent fall under?
- Primary CPC classification H01F3/10. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 24 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).