Toric pump
US5302081A · kind A · utility
10Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Nov 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2250/29
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A regenerative toric pump in which undesirable noise generation and leakage through clearance gaps between the impeller and housing is minimized includes an impeller having vanes lying in general planes radiating from the impeller axis disposed at variable spacings from each other in a geometrically balanced pattern. Recesses in one of opposed side surfaces on the impeller and housing are arranged in a pattern such as to minimize leakage through the clearance gap between those surfaces from points in the pump chamber which are at different pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.