Oxygen masks
US5538001A · kind A · utility
168Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1995 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Jan 26, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A pressure breathing mask, particularly an aircrew oxygen mask, includes an exoskeleton (10), a flexible facepiece (11) with an oxygen delivery connection (15), an inflatable bladder (20) positioned between the exoskeleton (10) and a rigid intermediate member (30), the intermediate member (30) bearing on the facepiece (11), and means (21, 23) for automatically inflating the bladder (20) when oxygen is delivered under pressure to the mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.