High efficiency mixer-impeller
US8220986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 11, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2215/0431
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mixer impeller having high efficiency blades. The impeller may include a central hub and a plurality of blades attached to and extending radially outwardly from the hub such that leading edges thereof are inclined upwardly from trailing edges thereof. Each of the blades may include a root attached to the hub, a tip, a first crease extending along substantially an entire length of the blade dividing the blade into a leading portion and a trailing portion, the leading and trailing portions meeting at the first crease such that the leading portion is angled downwardly from the trailing portion, and a second crease extending from a portion of the leading edge of the leading portion between the root and the tip diagonally along the leading portion to the tip, the second crease intersecting the tip at a point spaced from a point where the first crease intersects the tip, the second crease forming a tip portion of the leading portion that needs a remainder of the leading portion such that the tip portion is angled downwardly from the leading portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.