Ceiling suspension structure adapted for unopposed intersections
US5044138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Oct 13, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B9/122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A suspended ceiling structure adapted for unopposed intersections wherein the webs of the main grid runners adjacent the cross runner slots are provided with embossments which strengthen the web and contain the cross runner end connector against withdrawal. It is preferred that the embossments are placed at each side of the cross runner slots. The cross runner end connectors have tabs bent laterally from the longitudinal axis of the cross runners with the rearward edge of the tab bearing against the face of the main runner web, whereby upon the application of a pull out force, the tab edge bends outwardly until it presses against the ends of the embossments. This unopposed intersection structure is commonly referred to in the art as an "ashlar" condition or configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.