Guiding means at a joint
US7380383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2004 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jul 10, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/70
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A guiding element at a joint between boards, the joint including groove and tongue preferably intended to be joined by the use of glue. The tongue includes at least one guiding wedge. A fitting clearance between the tongue and the groove includes a first fitting clearance and a second, guiding, fitting clearance. The second, guiding, fitting clearance is obtained through the guiding wedges which are arranged parallel to the extension of the joint. The first fitting clearance comprises the main part of the fit and the second, guiding fitting clearance comprises a smaller part of the fit. The first fitting clearance is in the range 0.1-1 mm, while the second, guiding, fitting clearance is in the range 0.01-0.2 mm. The tongue of the joint is provided with at least one equalizing recess so that at least one equalizing cavity is formed in the joint, which equalizing cavity receives surplus glue used during the joining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.