Arrangement in connection with a gas mixer
US5722449A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1997 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jun 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2531
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An arrangement in connection with a gas mixer, which is arranged to form a mixed gas of oxygen and another gas to be mixed with it. To provide a simple and reliable arrangement, before the mixed gas is formed the oxygen is arranged to be supplied through both a mechanical adjusting means, and a mechanical and electronic flow-measuring means. The other gas to be mixed with oxygen is arranged to flow through an electronic flow-measuring device. The flow of the other gas is arranged to be regulated by means of an electronically controlled regulating valve, whereupon the electronic flow-measuring means, the electronic flow-measuring device, and the electronically controlled regulating valve are arranged to be operated by means of a control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.