Construction blocks for extended support structures
US5683283A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention involves a toy construction block which includes a main outer structure having a top, four sidewalls and an open bottom. The top has a plurality of symmetrically arranged elongated projections for interlocking with Other, similar blocks and the open bottom has an underside to the top which itself has an elongated friction post extending therefrom. The friction post is hollow and is centrally and symmetrically located on the underside. The critical features are that the top has thereon a top recess in alignment with the friction post, a bottom recess within the friction post of the block, and at least one of the four sidewalls has a side recess therein adapted to receive an interblock connector. In preferred embodiments, a plurality of the four sidewalls has a side recess therein, and the top recess and bottom recess are formed by a continuous and complete orifice or hole directly through the block vertically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.