Measurement while drilling fluid pressure pulse generator
US-9500075-B2 · Nov 22, 2016 · US
Rotor and rotating electric machine equipped with the rotor
US9239082B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9239082-B2 |
| Application number | US-201013578466-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 23, 2010 |
| Priority date | Feb 16, 2010 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A rotor comprising: a rotating shaft with at least one keyway formed at an outer circumferential surface thereof and ranging along an axial direction; and a rotor core that includes a key that projects out on an inner circumferential side thereof, and is fitted in the keyway; wherein: a recessed portion that widens outward along a radial direction is formed at each of two sides of the key facing opposite each other along a circumferential direction at the rotor core; a planar portion is formed at a bottom area of the recessed portion so as to lessen stress occurring on each of the two sides of the key facing opposite each other along the circumferential direction; the planar portion is a straight contoured portion extending over a predetermined length along a direction perpendicular to a direction in which the key projects out, and a connecting side surface extending to an inner circumference of the rotor core is formed continuously to an end of the straight contoured portion located on a side opposite from a key side where a key is present; a first corner portion, connecting a side surface of the key with a key-side end of the straight contoured portion, is formed as a circular arc contoured portion; a second corner portion, connecting the end of the straight contoured portion, located on the side opposite from the key side, with the connecting side surface, is formed as a circular arc contoured portion; and dimensions and shapes of various portions are determined so as to substantially equalize stress levels in the first corner portion and in the second corner portion.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rotor, comprising: a rotating shaft with at least one keyway formed at an outer circumferential surface thereof and ranging along an axial direction; and a rotor core that includes a key that projects out on an inner circumferential side thereof, and is fitted in the keyway, wherein: a recessed portion that widens outward along a radial direction is formed at each of two sides of the key facing opposite each other along a circumferential directio…
Assignees
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Classifications
- F16D1/0876Primary
Mechanical Engineering · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9239082B2 cover?
- A rotor comprising: a rotating shaft with at least one keyway formed at an outer circumferential surface thereof and ranging along an axial direction; and a rotor core that includes a key that projects out on an inner circumferential side thereof, and is fitted in the keyway; wherein: a recessed portion that widens outward along a radial direction is formed at each of two sides of the key facin…
- Who is the assignee on this patent?
- Kaimori Tomoaki, Nakayama Kenichi, Saito Yasuyuki, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F16D1/0876. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 19 2016 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).