Compact scroll fan assembly
US9127691B2 · kind B2 · utility
17Cited by
31References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Feb 4, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A radial fan assembly for use in a powered air purifying respirator includes at least an impeller, a printed circuit board and a scroll casing. The scroll casing has a first and a second scroll casing element. The second scroll casing element includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.