Enhanced chemical/biological respiratory protection system
US8479727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2004 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Jun 7, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention utilizes a chemical/biological hood with a filter-blower system that is attached to the chemical/biological hood. The filter-blower system provides overpressure to the hood only. The hood is fitted to or attached to a chemical/biological mask. Overpressure created by the filter-blower around the mask is created and is independent of the wearer's respiration so that over-breathing of the positive pressure is not possible. Typically this system would be available as a hood capable of providing enhanced protection. However, the filter-blower and hood system could be integrated with the mask. Cinching or sealing the hood at the neck can improve overpressure performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.