Respirator having an integrated oronasal mask
US10166417B2 · kind B2 · utility
1Cited by
25References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2015 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jan 14, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator comprising an outer mask in which is defined a main volume and an oronasal mask located within the outer mask and defining a secondary volume. Air for breathing enters the mask via a one-way valve and filter. Exhaled air exits the mask via an exhale conduit fitted with an exhale valve. A conduit is provided for the passage of air from the outer mask to the oronasal mask. The conduit is fitted with a one-way valve and a filter. The filter is such as to filter either particular or vapor challenges, or a mixture of these, as required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.