Locking systems for floorboards
US6918220B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 7, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2201/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a locking system for mechanical joining of floorboards (1, 1′), a floorboard having such a locking system and a flooring made of such floorboards. The locking system has mechanical cooperating means (36, 38; 6, 8, 14) for vertical and horizontal joining of adjoining floorboards. The means for horizontal joining about a vertical plane (F) comprise a locking groove (14) and a locking strip (16) which is located at opposite joint edge portions (4a, 4b) of the floorboard (4). The locking strip (6) projects from the joint plane (F) and has an upwards projecting locking element (8) at its free end. The locking groove (14) is formed in the opposite joint edge portion (4a) of the floorboard at a distance from the joint plane (F). The locking groove (14) and the locking element (8) have operative locking surfaces (10, 11). The locking surfaces are essentially plane and spaced from the upper side of the projecting strip and inside the locking groove and make a locking angle (A) of at least 50° to the upper side of the board. Moreover the locking groove has a guiding part (12) for cooperation with a corresponding guiding part (6) on the locking element (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.