Insulative roll-up shade system
US4458739A · kind A · utility
Inventors
Key dates
| Filing date | Aug 26, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Aug 26, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/582
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An insulative window shade assembly of the roll-up type for windows or like openings comprises a flexible sheet of shade material essentially of the size in area of the window or other opening to be insulated. The flexible sheet of material in its inoperative position is contained in a header or casing mounted at the top of the opening and extending across the width of the opening. The casing contains a spring-actuated roller upon which the sheet of shade material is wound with the leading edge protruding through a longitudinal slot or opening in the casing. The system further provides two side guides or channels mounted at the sides of the window or opening, and in which the channels contain a pile fabric to seal the sides of the flexible sheet when unrolled to the operative or insulative position. The leading edge of the sheet of flexible material is provided with a bar or rigid member constructed with means for securing it in a co-acting gripping device at the base of the window or opening whereby the shade is secured and sealed at the base or bottom of the window. The gripping means is desirably adjustable so that it can be secured on a horizontal or vertical supporting surface…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.