Bearing for vertical axis windmill and vertical axis wind power generator
US9797447B2 · kind B2 · utility
2Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2012 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/74
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball (7), a diameter of the ball and a curvature of a rolling groove of the bearing are set to satisfy a predetermined starting torque and a load rating. For example, the curvature of the rolling groove of the bearing is 54% or more and 100% or less, and the diameter of the ball has a ratio of 20% or less with respect to a vertical shaft (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.