Ventilation fan
US6435964B1 · kind B1 · utility
39Cited by
1References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F7/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A ventilation fan includes a case-like frame having an opening and a rib in the opening, a motor fastened to the rib inside the case-like frame, a face cover detachably covered on the case-like frame, the face cover having air inlets in communication with the opening of the case-like frame, a centrifugal fan fastened to. the motor shaft of the motor and disposed outside the case-like frame, and a wind box detachably covered on the outside of the case-like frame over the centrifugal fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.