The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2004
Filed:
Dec. 23, 2002
Un Jong Cha, CheongJu-city, Cungcheongbuk-Do, KR;
Hyun Sik Kim, Daejeon metropolitan city, KR;
Kyoung A Kim, CheongJu-city, Cungcheongbuk-Do, KR;
Other;
Abstract
The present invention relates to a system ( ) for obtaining measuring characteristic correction factors for a respiratory flow measuring device ( ) using a differential pressure difference. The system ( ) has a 3 L syringe ( ), a detecting unit ( ), an A/D converter ( ) and a computer ( ). The 3 L syringe ( ) is connected to a respiratory tube of the respiratory flow measuring device ( ) through a duct line. The detecting unit ( ) detects volume variation within the syringe ( ) and outputs the detected result as a voltage signal. The A/D converter ( ) converts a volume variation signal, detected as the voltage signal by the detecting unit ( ), and a differential pressure variation signal, detected as a voltage signal by a differential pressure sensor ( ) through a signal extracting circuit ( ) into digital signals. The computer ( ) calculates measuring characteristic correction factors using the digital signals.
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