Optics: measuring and testing – By light interference
Reexamination Certificate
2007-05-22
2009-06-30
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
By light interference
C600S532000, C073S700000
Reexamination Certificate
active
07554666
ABSTRACT:
An airway adapter that comprises a housing and a pressure transducer. The housing comprises a flow path having a first end and a second end, a first pressure port that communicates with the flow path, and a second pressure port that communicates with the flow path. The first pressure port is spaced apart from the second pressure port. The flow restriction is disposed in the flow path between the first and second pressure ports that creates a pressure differential therebetween. The pressure transducer generates a signal that reflects the differential pressure created by the flow restriction between the first and second pressure ports, wherein the pressure transducer comprises an optical interferometer.
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Chowdhury Tarifur
Hansen Jonathan M
RIC Investments, LLC.
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