Yo-yo including adjustable weight system
US6196891A · kind A · utility
12Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 19, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H1/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A yo-yo includes first and second side members, an axle extending between the side members, a string interconnected with the axle, and at least one weight releasably mounted to one of the side members in a first location, and moveable to a second location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.