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专利名称：Portable electronic spirometer发明人：David Brawner,Christopher Hegarty申请号：US10193922申请日：20020715
公开号：US20030216659A1公开日：20031120
专利附图：
摘要：A spirometer having a housing with an elongated flow chamber open at oneend, a pressure sensing end opposite the open end and an outlet passageway
intercepting the flow chamber at an angle &agr; and proximate the pressure sensing end.A differential pressure sensor is coupled to the pressure sensing end from a port at an
angle &bgr; to an axis of the flow chamber. The angle &agr; is substantially greater than0° but substantially less than 180° while the angle &bgr; may range from 90° to 180°,such that a significantly increased measured air pressure results over that measuredwhen &agr;=180° and &bgr;=90°.
申请人：BRAWNER DAVID,HEGARTY CHRISTOPHER
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