Double-layer drape
US6792994B2 · kind B2 · utility
64Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Oct 23, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2622
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A double-layer drape includes an upper beam and a window curtain connected to the upper beam. The window curtain includes an inner layer and an outward layer. Both layers are formed with different shade cloths. The outward layer is a pervious-to-light curtain. The inner layer includes a plurality of opaque curtains. The inner layer curtains are connected to the pervious-to-light curtain by up-and-down overlapping. In addition, the opaque curtains are simultaneously folded upwards or hung over downwards through pulling operating cords by a user to achieve the indoor anti-dazzling or semi-opaque effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.