Pump with twin cylindrical impellers
US5704774A · kind A · utility
Inventor
Key dates
| Filing date | Jan 3, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Jan 3, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump which is easy to manufacture and which has a high efficiency and low vibration includes a pair of identical circular-shaped impellers which are respectively eccentrially and rotatably connected to respective parallel shafts so as to rotate oppositely to one another while keeping a constant spacing therebetween, a pair of identical cylindrical impeller chambers in which the impellers are respectively positioned such that the impellers circumferentially slide along an inner peripheral surface of the impeller chambers, one impeller acting to discharge fluid from the impeller chamber in which it rotates and the other acting to intake fluid into the impeller chamber in which it rotates, and a connecting plate that couples the impellers together and causes them to be spaced a constant distance apart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.