Self-contained breathing apparatus
US11185650B2 · kind B2 · utility
2Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2013 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/22
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatuses and methods are disclosed for improving the Weight/Duration ratio of Self Contained Breathing Apparatuses (SCBAs) by decreasing the amount of fresh breathing gas required from the system by saving exhaled air that is low in carbon dioxide in a reservoir and reusing it at the subsequent inhalation. Electronic control units (“ECUs”) including conventional oxygen sensors and special types of carbon dioxide sensors are used to monitor and predictably regulate the consumption of breathing gas, further contributing to a significantly lower overall system weight for any given duration of the SCBA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.