Kit for producing fireproof cable ducts
US4798917A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Oct 31, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/0412
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A kit, which is particularly intended for the fireproof laying of cables and ducts, has endwise connectable, self-supporting components made from thermally insulating material and substantially elongated metal reinforcements. The self-supporting components are duct sections (4 to 12), which in each case comprise a trough section (4' to 12') made from thermally insulating material and externally reinforced by longitudinally continuous sheet metal parts (16) and which has a substantially U-shaped cross-section, and a cover (4" to 12") also made from a thermally insulating material. The trough sections (4' to 12') being in each case equipped for the cover-less laying of the duct (1), are connectable with adjacent trough sections (4' to 12'); and the associated covers (4" to 12") are detachably fixable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.