Fan
US8186958B2 · kind B2 · utility
2Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2007 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 28, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/666
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan includes a main plate and at least one or more blades connected to the main plate. At least a portion of a boundary portion between the main plate and a pressure surface of the blade is provided as a curved boundary portion such that the blade and the main plate are connected to each other at a curvature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.