Methods for tuning magnetic properties of electrical steel cores for electrical devices
US-2018233996-A1 · Aug 16, 2018 · US
Electric machine with locally-tuned properties
US11065857B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11065857-B2 |
| Application number | US-201816123323-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 6, 2018 |
| Priority date | Sep 6, 2018 |
| Publication date | Jul 20, 2021 |
| Grant date | Jul 20, 2021 |
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 method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along the deposit material to form a bound material within the cavity and on the compressed region.
First claim
Opening claim text (preview).
What is claimed is: 1. An electric machine lamination comprising: a sheet formed of an iron alloy and at least partially defining adjacent magnet pockets, wherein the sheet includes a tapered compressed region extending between and at an oblique angle to upper and lower surfaces of the sheet and wherein the tapered compressed region includes a plurality of opposing tapered compressed regions; and a composition different than the iron alloy disposed at the plurality of opposing tapered compressed regions, extending between the adjacent magnet pockets, and forming a center bridge having a lower magnetic permeability than the sheet. 2. The electric machine lamination of claim 1 wherein a cross-section of the sheet has a first thickness adjacent the tapered compressed regions, and a second thickness at the tapered compressed regions that is greater than zero and less than the first thickness. 3. The electric machine lamination of claim 1 wherein an upper surface of the composition is substantially flush with the upper surface of the sheet at the tapered compressed regions, and wherein a lower surface of the composition is substantially flush with the lower surface of the sheet. 4. The electric machine lamination of claim 1 wherein the tapered compressed regions and the composition at the tapered compressed regions define a combined thickness that generally corresponds to a thickness of the sheet adjacent the tapered compressed regions. 5. The electric machine lamination of claim 1 wherein the composition disposed between the plurality of opposing tapered compressed regions has a thickness that generally corresponds to a thickness of the sheet adjacent the tapered compressed regions.
Assignees
Inventors
Classifications
Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38) · CPC title
- H02K1/22Primary
Rotating parts of the magnetic circuit · CPC title
Punching · CPC title
- B32B38/04Primary
Punching, slitting or perforating · CPC title
Means to assemble electrical device · CPC title
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 US11065857B2 cover?
- A method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification H02K1/22. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 20 2021 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).