Dowel fastener and method for securely attaching items to an edge of a composite board
US6350092B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/75
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener for securely attaching a board perpendicularly to an edge of a composite board that includes a first portion and a second portion. The first portion includes a dowel that fixedly engages in a blindbore in the edge of the composite board, a washer that removably abuts against the dowel and the edge of the composite board and limits travel of the dowel in the blindbore, glue that is disposed on the dowel and in the blindbore and fixedly engages the dowel in the blindbore, and an installation screw that extends through the washer and threadably into the dowel, and when tightened, holds the first portion together as a unit, while the unit is being installed in the blindbore, and once the unit is installed, the installation screw and the washer are removed, with the glue maintaining the first portion in the blindbore. The outer longitudinal surface of the dowel is etched with 50% HCl to give a thin black coating to improve pullout strength of the dowel, as opposed to at least one of knurls, truncated threads, and roughening which would decrease the pullout strength of the dowel. The second portion includes a fastener screw that replaces the removed installation screw and exte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.