High performance roller bearing yo-yo
US6565408B1 · kind B1 · utility
13Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Sep 1, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H1/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A yo-yo includes a first yo-yo half defining a first starburst, a second yo-yo half defining a second starburst, and an axle fixedly mounted between said yo-yo halves. The yo-yo also includes a roller bearing fixedly attached to the axle, and a spool fixedly attached to the roller bearing, the spool having a circumferential outer rim with a groove therein. A bearing pocket defines an annular radial gap between each yo-yo half and the outer rim, the gap sufficiently small that a string cannot wedge in the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.