Multi-use personal ventilation/filtration system
US8333816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2010 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Apr 3, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2221/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A ventilation device uses a cross-flow fan and one or more filters, where the filter preferably has a J-shape that at least partially surrounds the rotor of the cross-flow fan. In one embodiment, the filter includes a plurality of pleats, preferably along a bottom surface of the filter. The filters preferably remove particles, undesired gases, and micro-organisms. A filtration and ventilation system with at least one first ventilation device and at least one second ventilation device larger than the first ventilation device, as well as a method of filtering contaminants out of air using a personal ventilation device, are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.