Breathing equipment for high altitude flights
US4172455A · kind A · utility
79Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Sep 2, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A breathing equipment for high altitude flights comprises a breathing mask provided with a breathing gas regulator capable of supplying breathing gas under pressure and a helmet. The helmet is provided with means which, if the pressure of the breathing gas supplied to the mask is higher than the ambient pressure by an amount exceeding a predetermined threshold, subject those organs of the head which are particularly sensitive to the pressure differential to a gas over-pressure sufficient to avoid physiological troubles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.