Sprinkler-compatible ceiling fans
US8622712B2 · kind B2 · utility
5Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2008 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 14, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the event of a fire, in some examples, a ceiling fan stops its fan blades at a predetermined position so as to avoid obstructing the spray from an overhead sprinkler head. The fan can be stopped by various apparatus including, but not limited to, a spring loaded roller engaging a lobed member to urge the fan to a chosen stop position, an electromechanical brake that grips a rotating member at certain locations, a stationary magnet attracted to one or more iron pads that rotate to certain locations, and a motor controller responsive to a rotational position sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.