Double-layer Roman shade folding structure
US10815724B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2458
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A double-layer Roman shade folding structure includes a bracket. The bracket is provided with an outer curtain fabric, a roller tube, and an inner curtain fabric. The outer curtain fabric is provided with a plurality of strip-shaped limiting members that are arranged horizontally and spaced apart at equal intervals. An opening is defined between the limiting members and the outer curtain fabric for the inner curtain fabric to pass therethrough. When the bottom end of the inner curtain fabric drives the bottom end of the outer curtain fabric to be moved up, the plurality of limiting members are pushed and moved up in sequence so that the outer curtain fabric is folded and overlapped continuously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.