Oxygen enriched reciprocating piston respirator
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United States of America Patent
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-
May 13, 1986
Grant Date -
N/A
app pub date -
Jul 9, 1985
filing date -
Jul 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A variable flow reciprocating piston respirator system which is capable of providing a substantially constant oxygen enrichment over an entire inspiration stroke of a variable flow respirator output. A proportional control valve is used to deliver oxygen from an oxygen supply tank to the output of a reciprocation piston pump. A microprocessor controls the magnitude of opening of the proportional valve to insure that a proper overall volume of the output is produced with the proper percentage of enrichment of oxygen.
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