Beam for drywall ceiling
US6722098B2 · kind B2 · utility
21Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B9/245
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A beam for a grid in a ceiling that has drywall affixed to the grid by self-tapping screws.The beam has a hem rolled downwardly and inwardly along the edge of both flanges of the beam. The hem prevents the flange from bending upward and sliding off the screw tip. The screw tip enters one of many indentations in the flange and is captured. The captured screw tip penetrates the flange and secures the drywall to the beam.The beam does not have a face cap over the flanges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.