Proportional oxygen conserving device with flow sensing
US10583265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2012 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4541
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and system for concentrating oxygen include providing a portable apparatus having a plurality of sieve beds, each sieve bed in the plurality of sieve beds including a first end and a second end, a reservoir storing oxygen-enriched gas exiting from the second ends of the plurality of sieve beds, a compressor, an oxygen delivery valve communicating with the reservoir via a delivery line, a flow sensor associated with the delivery line, and control electronics adapted to control operation of the oxygen delivery valve; measuring, via the flow sensor, a flow of the oxygen-enriched gas through the sensor and outputting a signal indicative thereof; and controlling, using the control electronics, the opening and closing the oxygen delivery valve to deliver the oxygen-enriched gas from the reservoir to a user based on the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.