Chemical/biological special operations mask
US6763835B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Apr 12, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B17/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respiratory mask assembly for filtering airborne biological and/or chemical agents from air for breathing, comprises an outer hood adapted to seal with and encompass at least the head and neck of a wearer from ambient atmosphere, at least one transparent lens attached to the outer hood for providing visual sight to the wearer, at least one filter assembly attached to the outer hood, the filter assembly adapted for filtering airborne biological and/or chemical agents from air passing therethrough, an airflow regulator located in the outer hood, the airflow regulator including an outlet adapted for expelling exhaled air to ambient, and an inlet adapted for drawing air thereinto, and air conveying means located in the outer hood for conveying air filtered through the filter assembly from ambient to the inside surface of the transparent lens for drawing into the airflow regulator inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.