发明名称 |
Spirometer calibration device and associated displacement detection system |
摘要 |
A device for calibrating a Spirometer includes a hand driven syringe having magnetic elements displaced along the shaft of the syringe piston at intervals corresponding to designated volumes. A Hall effect transducer senses the passage of the magnetic when the syringe piston is actuated and transmitts pulses to a timer so that average rate of flow delivered by the syringe can be derived.
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申请公布号 |
US4324127(A) |
申请公布日期 |
1982.04.13 |
申请号 |
US19790095484 |
申请日期 |
1979.11.19 |
申请人 |
BIOTRINE CORPORATION |
发明人 |
GAZZARA, PETER;BURKE, JR., JOHN W.;EDWARDS, JR., RODNEY |
分类号 |
G01F25/00;(IPC1-7):G01F25/00 |
主分类号 |
G01F25/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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