Respirator having an integrated oronasal mask
US9132299B2 · kind B2 · utility
4Cited by
23References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2005 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Apr 26, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator includes an outer mask defining a first volume. An oronasal mask defines a second volume. The oronasal mask is positioned within the first volume. A primary filter is affixed to the outer mask and a secondary filter is positioned within the first volume such that the secondary filter filters air traveling from the first volume to the second volume. The secondary filter filters air traveling around a portion of the second volume. The filters are arranged to filter either particles or vapors, or a mixture of these, as required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.