Gas Blending Apparatus and Gas Delivery System with such a Gas Blending Apparatus
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United States of America Patent
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Issued Date -
Mar 21, 2024
app pub date -
Sep 21, 2023
filing date -
Sep 21, 2022
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Abstract
A gas blending apparatus and an ambient pressure gas delivery and conservation system with such a gas blending apparatus for delivering gas at ambient pressure from a donor reservoir to a recipient. A main conduit body has a first port in fluidic communication with the donor reservoir and a second port for supplying gas to the recipient through ambient pressure tubing. A one-way inspiratory valve between the first port and the second port permits gas to be drawn from the reservoir but not to be received through the second port, through the first port, and into the donor reservoir. An air-input orifice permits ambient air to be blended with gas drawn from the reservoir. An orifice adjustment member is selectively repositionable relative to the air-input orifice to adjust the effective size of the aperture thereby to adjust the ratio of ambient air to gas drawn from the reservoir.
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