Puzzle block
US6241249A · kind A · utility
Inventor
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/046
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A puzzle block, which includes one first square block, which has magnet at each of the six sides thereof, 6 second square blocks, which has a magnet at each of four sides thereof and a metal sheet at one of the other two sides thereof, 12 third square blocks, which has a magnet at each of two opposite sides thereof and two metal sheets respectively provided at two adjacent sides thereof between the two opposite sides which carry a respective recessed hole, and 8 fourth square blocks, which has a plurality of metal sheets respectively provided at three adjacent sides thereof, wherein the square blocks are attached to one another forming a combination block such that the magnets at the first square blocks respectively attract the metal sheet at each of the second square blocks, the metal sheets at the third square blocks are respectively attracted by the magnets at the second square blocks, and the metal sheets at the fourth square blocks are respectively attracted by the magnets at the third square blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.