Mixing impeller with spiral leading edge
US7473025B1 · kind B1 · utility
15Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2008 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 31, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49336
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An impeller blade has a flat central disk portion, at least a pair of extensions extending from a central disk portion, and at least two leading edges defined by the outer periphery of the disk portion. Each leading edge spans from one extension to an adjacent extension, and each leading edge has at least a portion at which the radius of the leading edge from the center increases to form a continuous increasing radius curve. Each leading edge forms an increasing radius spiral edge surface in between the extensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.