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:
Jun. 07, 2005
Filed:
Jun. 12, 2003
Joseph Lomask, Wilmington, NC (US);
Joseph Lomask, Wilmington, NC (US);
Buxco Electronics, Inc., Sharon, CT (US);
Abstract
The accuracy of measurements of changes in air volumes within a plethysmograph is improved by addition of a manifold to provide a common source of exterior air to the plethysmograph test and reference chamber. The preferred plethysmograph includes test and reference chambers divided by a common separator wall, pneumotachs in communication with the chambers, and a differential pressure transducer having a first inlet in communication with the test chamber and a second inlet in communication with the reference chamber. The manifold includes an exterior air inlet and a passageway extending between the two pneumotachs and the air inlet. The passageway may be in the form of separate tubes or conduits, or a common housing covering the pneumotachs. Preferably, the distances from the exterior air inlets to the two pneumotachs are approximately the same.