Ambient pressure air/oxygen blender
US5014694A · kind A · utility
37Cited by
17References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Oct 15, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/101
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gas blender for use with home ventilation equipment where pressurized oxygen is mixed with ambient air, in which a double ended poppet cooperates with two valve seats which are configured and orientated so that axial motion of the double ended poppet simultaneously opens both valves to maintain a constant flow ratio, or simultaneously closes both valves to maintain a constant flow ratio. One of the valve seats may be adjustably positioned to determine the initial flow ratio of gases through the valve seats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.