Ambient pressure air/oxygen blender
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United States of America Patent
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-
May 14, 1991
Grant Date -
N/A
app pub date -
Oct 15, 1990
filing date -
Oct 15, 1990
priority date (Note) -
Expired
status (Latency Note)
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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.
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