System for joining building boards
USRE39439E1 · kind E1 · reissue
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1994 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Apr 29, 2014 |
Classification
- Technology area (CPC —)General
Abstract
The invention relates to a system for laying and mechanically joining building panels, especially thin, hard, floating floors. Adjacent joint edges (3, 4) of two panels (1, 2) engage each other to provide a first mechanical connection locking the joint edges (3, 4) in a first direction (D1) perpendicular to the principal plane of the panels. In each joint, there is further provided a strip (6) which is integrated with one joint edge (3) and which projects behind the other joint edge (4). The strip (6) has an upwardly protruding locking element (8) engaging in a locking groove (14) in the rear side (16) of the other joint edge (4) to form a second mechanical connection locking the panels (1, 2) in a second direction (D2) parallel to the principal plane of the panels and at right angles to the joint. Both the first and the second mechanical connections allow mutual displacement of joined panels (1, 2) in the direction of the joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.