Breathing apparatus
US4016876A · kind A · utility
12Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1975 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Jul 30, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B7/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Breathing apparatus which incorporates a sensing device operable to adjust the amount of breather's exhaled gas captured in a gas collector section as a direct function of the carbon dioxide content of the exhalation. The amount of exhaled gas captured is sufficiently low in carbon dioxide (CO.sub.2) content to permit rebreathing on the next inhalation, at which time the sensor again adjusts the volume of exhaled gas to be captured. In the one embodiment, a fire fighter's breathing system is described wherein the gas collector section is integral with the breathing mask worn by the fire fighter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.