Grid tee for suspension ceilings or the like
US4520609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1982 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Sep 27, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C2003/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Grid tees for suspension ceilings are disclosed in which a cross section is provided concentrating material at the two extremities of the grid tees. Such grid tee sections are also formed to provide a shear center which is centrally located substantially along the web section of the tee. In some embodiments, a single strip is formed to provide three laterally extending layers adjacent to the upper extremity of the bulb, and in another embodiment a single strip of material is formed to concentrate material on one side of the web at the bulb extremity and on the other side of the web at the flange extremity so as to balance the section and locate the shear center along the web plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.