Drive system driving a screen, and apparatus comprising such a system
US11230884B2 · kind B2 · utility
2Cited by
10References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2019 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Jul 10, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/60
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a drive system for driving a screen, that includes an actuator designed to drive in rotation a winding tube acting on the screen, and a compensation spring which is mounted around the actuator and has several turns formed by winding a wire. The drive system includes at least one ring made of plastic material that is placed between two adjacent turns of the compensation spring, and an external radius of the ring is larger than a maximum external radius of the compensation spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.