Rolling bearing having a sensor and drive unit
US-2021088076-A1 · Mar 25, 2021 · US
Electrical machine having a conductive layer
US11936254B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11936254-B2 |
| Application number | US-202217712304-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2022 |
| Priority date | Apr 12, 2021 |
| Publication date | Mar 19, 2024 |
| Grant date | Mar 19, 2024 |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
An electrical machine includes a non-rotating part, a rotating part, at least one bearing that includes a rotating ring and a non-rotating ring and supports the rotating part, a grounding brush fixed and secured to the non-rotating part, and having a free end extending towards the rotating ring of the bearing, and a conductive layer covering a portion of a surface of the rotating ring of the bearing such that the free end of the grounding brush is in contact with the conductive layer.
First claim
Opening claim text (preview).
We claim: 1. An electrical machine, comprising: a non-rotating part; a rotating part; at least one bearing supporting said rotating part, the bearing comprising a rotating outer ring and a non-rotating inner ring; a grounding brush fixed to the non-rotating part and having a free end extending towards the rotating outer ring of the bearing; and a conductive layer covering at least partially a surface of the rotating outer ring of the bearing, wherein the free end of the grounding brush is in contact with the conductive layer. 2. The electrical machine according to claim 1 , wherein the rotating outer ring further comprises an axial portion extending axially beyond a lateral face of the non-rotating inner ring, the conductive layer covering at least a cylindrical surface of the axial portion. 3. The electrical machine according to claim 2 , wherein the free end of the fiber grounding brush is in radial contact with the conductive layer. 4. The electrical machine according to claim 3 , wherein the conductive layer covers a lateral face of the rotating outer ring of the bearing. 5. The electrical machine according to claim 4 , wherein the grounding brush extends at an incline with respect to an axis of symmetry (X) of the bearing towards the lateral face of the rotating outer ring of the bearing and is in axial contact with the conductive layer. 6. The electrical machine according to claim 1 , wherein the conductive layer covers an entire axially outer surface of the rotating outer ring. 7. The electrical machine according to claim 1 , wherein the conductive layer is applied by electroplating on the rotating outer ring of the bearing. 8. The electrical machine according to claim 1 , wherein the conductive layer is made of a metallic material. 9. The electrical machine according to claim 8 , wherein the metallic material is a noble metal. 10. The electrical machine according to claim 9 , wherein the noble metal is selected from a group consisting of gold, silver, and platinum. 11. The electrical machine according to claim 8 , wherein the conductive layer is made of a metallic material is an ignoble metal. 12. The electrical machine according to claim 11 , wherein the ignoble metal is selected from a group consisting of tin and nickel. 13. The electrical machine according to claim 1 , wherein the conductive layer is applied by electroless plating on the rotating inner ring of the bearing.
Assignees
Inventors
Classifications
- H02K11/40Primary
Structural association with grounding devices · CPC title
using bearings with rolling contact, e.g. ball bearings · CPC title
Structural association with bearings · CPC title
- F16C19/06Primary
with a single row or balls · CPC title
Conductive elements, e.g. to prevent static electricity · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11936254B2 cover?
- An electrical machine includes a non-rotating part, a rotating part, at least one bearing that includes a rotating ring and a non-rotating ring and supports the rotating part, a grounding brush fixed and secured to the non-rotating part, and having a free end extending towards the rotating ring of the bearing, and a conductive layer covering a portion of a surface of the rotating ring of the be…
- Who is the assignee on this patent?
- Skf Ab
- What technology area does this patent fall under?
- Primary CPC classification H02K11/40. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 19 2024 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).