Insulating and fluidtight roof covering
US4558550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1983 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Aug 29, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D7/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The covering is constructed on the site and adheres to a corrugated support 1 and to spaced-apart projections 2. It comprises a reinforcing element of metal or of a glass cloth 4, 6 having meshes which are small enough to retain a foaming product which is still in the liquid state but sufficiently rigid (for example ribbed) so as to be planar and have great strength. The reinforcing element is embedded in the foaming material in the course of the solidification of the latter and imparts thereto a planar outer surface. Air pockets are formed between the corrugation roots 10 and the solidified and reinforced foaming product. This reinforcing element may include two successive layers, namely a layer 4 having small meshes and a layer 6 having large meshes, the latter providing the desired strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.