Operationally adaptable chemical-biological mask
US7028688B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2005 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Jun 7, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/006
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A chemical-biological protective mask having a weight distribution that imparts a balanced center-of-gravity to the wearer of the mask, and is adaptable for different operational requirements by adjusting or altering the air flow through the mask. The protective mask includes a head covering to fully cover the wearer's head including a hood, a face piece having a visor contoured to the wearer's face, ducting within the mask connected to a filtering system mounted at the rear of the head covering and a purge airflow through the hood. Additional side or front mounted filters can be added to provide either parallel or series filtration with the rear mounted filters. A blower system may also be used to impart an airflow into the mask and improve breathing resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.