Set of paving stones
US6168347A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2201/162
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A set of paving blocks wherein each block is a prism having side and end walls that are irregular in outline but are contained only within a respective virtual rectangular perimeter. The rectangular perimeter has a length L in a X axis and a width W in a Y axis at right angle to the X axis. At least two spaced apart parallel sections of the prism extend between the side walls, parallel to the Y axis and terminate at the virtual rectangular perimeter, such that each section has a width equal to W and the prism has at least one section bisecting the virtual rectangle parallel to the X axis and terminating at a rectangular perimeter and having a length equal to L.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.