Patent · US Expired

Insulated one-piece roof

US4453358A · kind A · utility

7Cited by

11References

4Claims

0Family size

Assignees

BAYER HEALTHCARE LLC · DE
Correcta GmbH · DE

Inventors

Hermann Gruber · Leverkusen, DE
Wolfgang Wellner · Bensberg, DE
Hermann Diehl · Grünwald, DE
Dieter Monig · Odenthal, DE

Key dates

Filing date	Aug 24, 1981
Grant date	Jun 12, 1984
Priority date	—
Expiry date	Aug 24, 2001

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04D3/358
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The present invention relates to an insulated one-piece roof for use over heatable rooms comprising at least three layers, the first layer being a solid or other load-bearing construction, the second layer being an insulating board and the third layer being a prepared roofing, said one-piece roof further characterized in that the characteristics value .mu..multidot.s where .mu. is the diffusion resistance index and s is the layer thickness of the constituent material of the vertically adjacent layers, decreases outwardly, said prepared roofing being firmly joined to the underlying insulating board and having a characteristic value .mu..multidot.s of less than 4 m.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.