Ceiling fan having rotary inner housing
US5975848A · kind A · utility
5Cited by
8References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ceiling fan includes an outer housing and a cap secured on top of the outer housing. A shaft is secured to the cap and a motor is disposed in the outer housing and secured to the shaft for driving a number of fan blades. An inner housing is rotatably disposed in the outer housing and includes a center sleeve rotatably engaged on the shaft for allowing the inner housing to be rotated about the shaft and includes a number of blade members. The fan blades may generate a circulating wind through the inner housing in order to actuate the blade members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.