Shutter and blade driving system and transmission device thereof and blade angle control method used in the same
US11047168B2 · kind B2 · utility
2Cited by
3References
11Claims
0Family size
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Key dates
| Filing date | Mar 14, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Aug 5, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H37/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shutter including a frame, a first blade set, a second blade set, a power source and a blade driving system is provided. The frame has a frame body. The first blade set and the second blade set are disposed on the frame body of the frame. The power source is disposed in the frame body. The blade driving system connects the power source, the first blade set and the second blade set for rotating the first blade set and/or the second blade set to rotate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.