Exhaust fan
US5692247A · kind A · utility
0Cited by
4References
10Claims
0Family size
Inventor
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2005/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The disclosure herein describes an apparatus for recovering kinetic energy in a free flowing water stream and converting it into useful energy; it comprises a body (22) immerged in a stream, the body defining a duct having an intake side (26) and a discharge side (27). The discharge side is equipped with a deflector (30) which flares outwardly for obstructing the flow of water around the duct to thereby create a negative pressure drag on water being impelled as it is being discharged from the duct. The deflectors flare outwardly at an angle varying from 75.degree. to 160.degree. as measured from the longitudinal axis of the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.