Ceiling fan blade
US11111930B2 · kind B2 · utility
6Cited by
43References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Sep 24, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/301
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ceiling fan or blade thereof can include a fan motor for rotating the blade. The blade can include an airfoil body having an outer surface extending between a leading edge and a trailing edge, and a root and a tip. The blade can be separated into three distinct cross sections including a first cross section as a lifting cross section, a second cross section as a flat cross section, and a third cross section as a transition section between the first and second cross sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.