Ducted fan
US12025149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2020 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ducted fan that includes a housing with a cylindrical shape, a ring motor in the housing, and fan blades extending radially inward from an inner circumferential surface of the ring motor. The housing includes a first housing that covers a first side in an axial direction of the ring motor and a second housing that covers a second side in the axial direction of the ring motor. The second housing includes through holes penetrating the second housing at a portion on the second side in the axial direction with respect to the ring motor. The housing includes an outer circumferential wall including first and second wall portions located in outer circumferential portions of the first and second housings. The outer circumferential wall includes opening portions defined by a gap between the first and second wall portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.