Ceiling fans with low solidity ratio
US8142156B2 · kind B2 · utility
7Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/384
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An overhead fan system of a building comprises a ceiling fan underneath a nearby fire sprinkler head. The ceiling fan has particularly low fan solidity to minimize the fan obstructing the spray of water from the sprinkler head. To further reduce the obstruction, some example fans include fan blades that automatically retract in the event of a fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.