Advanced chemical/biological crew mask
US7007690B1 · kind B1 · utility
6Cited by
30References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved crew mask for protection of a user against chemical and biological hazards is provided. The novel crew mask includes the following features: a facepiece that includes a hybrid face seal with both intern and flat seals, and at least one transparent lens positioned at the level of the eyes of the person; at least one inlet hose for delivery of filtered air operably connected to the facepiece; at least one exhaust one-way exhaust port for venting air from the crew mask; and a compact filter unit with a reduced airflow resistance relative to currently employed filter units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.