Ball
US8684870B2 · kind B2 · utility
17Cited by
18References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2008 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | May 17, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B43/002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A ball includes a ball body having a spherical surface, and at least one projection extending from the surface of the ball body. The projection extends in such a manner that the projection forcibly separates a laminar boundary layer generated on the surface of the ball body, and transitions the laminar boundary layer to a turbulent boundary layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.