Puzzle assembly with adjustable the degree of difficulty
US8302967B2 · kind B2 · utility
5Cited by
8References
6Claims
0Family size
Inventors
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Aug 2, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2009/0815
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A puzzle assembly which can be adjust the degree of difficulty is disclosed. The disclosed puzzle assembly comprises a rotation shaft, a plurality of rotation plate members having slide grooves on the outer circumference and inserted into the rotation shaft, a plurality of puzzle pieces engaged with the slide grooves movably, wherein at least two of the rotation plate members are coupled together and rotate simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.