Mobile blocks
US4446649A · kind A · utility
14Cited by
2References
10Claims
0Family size
Inventors
Key dates
| Filing date | Oct 16, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Oct 16, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A unique block construction for forming toy blocks which can be either interconnected to form a train, or stacked on top of each other. A block according to the invention includes a coupling which has a retracted position in which it forms part of the basic block contour when the block is to be stacked, and which can be manipulated into a protracted position for coupling the block to another block to form a train.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.