Floor covering
US6772568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/17
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention concerns a floor covering formed of hard panels (2) which are provided, at least on two opposite edges (3-4, 5-6), with coupling devices (7) made in one piece with the panels (2), whereby these coupling devices (7) provide for an interlocking in a direction (R1) perpendicular to the plane of the floor covering (1), as well as in a direction (R2) perpendicular to the edges (3-4, 5-6) concerned and parallel to the plane of the floor covering (1). These coupling devices (7) comprise a tongue (8) and a groove (9). The lip (11) which is situated on the bottom side of the groove (9) is longer than the lip (10) on the top side. The edge (5) which is provided with the tongue (8) is made elastically flexible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.