Thermally efficient window shade construction
US4398585A · kind A · utility
Inventor
Key dates
| Filing date | Feb 16, 1982 |
| Grant date | Aug 16, 1983 |
| Priority date | — |
| Expiry date | Feb 16, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/80
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to an improved thermal window shade construction characterized in that the same is sufficiently flexible to be installed in windows of a wide variety of sizes with a minimum number of stock parts. The invention is further characterized in that the shade is highly resistant to dislodgement in a lateral inward direction of the shade margins from the side seal components. A further characterizing feature of the invention resides in the novel mechanism which locks the shade in its downward or operative position and at the same time functions to form an effective top seal. Still a further characterizing feature of the invention resides in the ability of the stock parts supplied to form an effective sealing relationship with shades of a wide variety of thicknesses, whereby laminated shade constructions with desired decorative effects may be readily employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.