Volume expansion system for breathing gas in closed-circuit breathing apparatus
US7810498B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2007 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A volume expansion system increases the storage volume for breathing gas in a closed-circuit breathing gas apparatus. A flow controller is coupled to an inhalation side of the closed-circuit breathing gas apparatus and is also coupled to an expandable reservoir. The flow controller defines a first flow path that allows breathing gas in the inhalation side to automatically flow into the expandable reservoir when pressure in the inhalation side exceeds a threshold. The flow controller can also include the means to define a second flow path that allows on-demand return of the breathing gas in the expandable reservoir to the inhalation side of the breathing gas apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.