Air filtration and positive pressurization system for vehicles in environmentally adverse conditions
US7294181B1 · kind B1 · utility
13Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/265
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method for providing filtered and pressurized air into a vehicle cab, enclosure or other interior enclosed environment is described, in which a filtered positive pressure air unit comprises a sealed box, a HEPA filter, a blower, a magnahelic, power source and ductwork. Dirty air is drawn by the blower through the hose and ductwork to the HEPA filter where a certain percentage of impurities of a certain size or larger are removed. Clean air is discharged at a sufficiently high rate to create a positive pressure inside the interior enclosed environment, keeping clean air in, and dirty air out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.