Circuit board and power supply device
US-2024048029-A1 · Feb 8, 2024 · US
Brushless motor and disk drive apparatus
US9209656B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9209656-B2 |
| Application number | US-201313867505-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 22, 2013 |
| Priority date | May 22, 2012 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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 brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet.
First claim
Opening claim text (preview).
What is claimed is: 1. A brushless motor, comprising: a stationary unit; and a rotary unit rotatably supported with respect to the stationary unit, wherein the stationary unit includes a flat armature arranged to extend in a direction orthogonal to a center axis extending in an up-down direction and a base member arranged to support the armature, the rotary unit includes a magnet positioned above the armature, a hub made of a magnetic material and arranged to hold the magnet…
Assignees
Inventors
Classifications
Electricity · mapped topic
- H02K1/2793Primary
Electricity · mapped topic
Electricity · mapped topic
- H02K21/24Primary
Electricity · mapped topic
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9209656B2 cover?
- A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a c…
- Who is the assignee on this patent?
- Nidec Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K1/2793. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 08 2015 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).