Block puzzles assembly
US6029974A · kind A · utility
Inventor
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F9/1208
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention relates to a new block puzzles assembly that is comprised of four stacks of a plurality of similar, generally rectangular shaped blocks with circular tenon male attachment part on their closed top face and complementary female attachment part enclosed within their open bottom face, allowing blocks to be releasably held together when assembled in vertical stacks. Each of a pair of side faces of a block have a portion of a first image, each of the other pair of side faces of the same block have a portion of a second image. A first image being produced on a vertical plane when stacks are properly arranged in a generally rectangular shaped stack assembly. A second image being produced when all stacks of same properly arranged stack assembly are turned around their vertical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.