Respirator assembly
US8276582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator assembly e.g. for NBC protection is formed from two separate sub-assemblies. The first sub-assembly comprises a flexible hood (or other suitable headgear), a rigid mounting ring and a peripheral face seal. The second sub-assembly comprise a face plate with lens, oronasal mask and inlet and outlet valves, and is demountably attachable to the ring. The first sub-assembly can be worn on its own with the user breathing ambient air through the front end, the second sub-assembly being added if and when a hazard is encountered. The positioning of the face seal in the first sub-assembly means that a comfortable and reliable fit can be ensured when the sub-assembly is donned prior to a mission, but the user is relieved of the physiological burden of wearing the complete respirator unless and until protection is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.