Rolling curtain and assembling method thereof
US12270252B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Sep 29, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/90
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present application relates to a rolling curtain and an assembling method thereof. The rolling curtain includes a roller, a curtain cloth, a lower rod, a motor, a spiral spring device, a first fixed bracket and a second fixed bracket. The spiral spring device further includes a fixed shaft, an outer rotatable frame, a spiral spring and an inserting pin. Pin holes corresponding to each other are provided on the fixed shaft and the outer rotatable frame respectively. The spiral spring is tightened and mounted in the outer rotatable frame. The inserting pin is inserted in the pin holes of the fixed shaft and the outer rotatable frame to fixedly connect the fixed shaft tot the outer rotatable frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.