Movable glazing and insulation for windows
US4355676A · kind A · utility
Inventor
Key dates
| Filing date | Mar 5, 1981 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Mar 5, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/264
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention comprises a double glazing construction having foldable insulating louvers attached to and located between the glazing panels. The louvers include internal insulating means and dual hingeing means permitting the louvers to be closed and opened as one of the glazing panels is moved relative to the other. The specific configuration of the louvers and the means for attaching the louvers to the glazing permit the louvers, the hingeing means and the glazing to be manufactured from extruded plastic components. The louvers may be coated with a heat and light reflective material to further improve the insulating effectiveness when the louvers are closed and to direct sunlight deeper within a building interior when the louvers are opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.