Breathing mask with oxygen reduced consumption
US8857431B2 · kind B2 · utility
3Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Nov 9, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B9/022
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Embodiments of the invention provide a breathing mask for aircraft crewmember. The breathing mask includes an on-demand regulator with an inlet connected to a source of breathing gas and an outlet to exhaust the breathing gas. The outlet has an aperture controlled by a movable valve having an open position when the crewmember breathes out and a closed position when the crewmember breathes in. The breathing mask also has a latch member operable by a crewmember to latch the valve in the open position, the latch member including an unlocking member to release the valve when the cabin pressure is below a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.