Ceiling fan having a rotatable inner housing
US6022189A · kind A · utility
29Cited by
8References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/088
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ceiling fan includes an outer housing and a cap secured on top of the outer housing. A motor is disposed in the outer housing for driving a number of fan blades. An inner housing is rotatably disposed in the outer housing and is coupled to the motor by a gear transmission mechanism for allowing the inner housing to be rotated by the motor. An additional motor may be secured on the outer housing and coupled to the inner housing for rotating the inner housing. One or more light bulbs may be disposed in the inner housing for lighting the pattern on the inner housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.