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US-2015354995-A1 · Dec 10, 2015 · US
Rotary electric machine
US8970077B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970077-B2 |
| Application number | US-201213452398-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2012 |
| Priority date | Oct 17, 2011 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goes into contact with the frame when the stator and the ring member thermally expand, whereby the stator and the ring member are efficiently cooled.
First claim
Opening claim text (preview).
What is claimed is: 1. A rotary electric machine comprising: a rotor mounted rotatably about a rotary shaft; a stator having a coil wound to surround said rotor; and a frame disposed on the outside of said stator with a gap created in between; wherein said gap has a distance which is configured to vary as a result of thermal expansion of said stator caused by a temperature change, and an outer surface of said stator comes into contact with said frame and said stator is coole…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
- H02K1/185Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8970077B2 cover?
- A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goe…
- Who is the assignee on this patent?
- Murakami Tadashi, Ojima Kouichi, Inoue Masaya, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H02K1/185. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 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).