Blower fan
US7214033B2 · kind B2 · utility
4Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Feb 4, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower fan includes a shroud, a hub for guiding airflow being discharged, and a plurality of blades disposed between the shroud and the hub. A first outer diameter of a first portion, which is close to the hub, of the blade is different from a second outer diameter of a second portion, which is close to the shroud, of the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.