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. 18, 2009
Filed:
Apr. 25, 2006
Howard Austerlitz, Stony Brook, NY (US);
Lenard Hirshman, Freeport, NY (US);
Ronald Bueter, Cary, NC (US);
Stan Wood, Bushkill, PA (US);
Howard Austerlitz, Stony Brook, NY (US);
Lenard Hirshman, Freeport, NY (US);
Ronald Bueter, Cary, NC (US);
Stan Wood, Bushkill, PA (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A gas measuring method, apparatus and system for measuring a concentration of a gas of interest is disclosed. The gas concentration is based on a propagation delay of a sonic or ultrasonic wave as the wave travels through the gas. The propagation delay is measured such that delay contributions from sources other than the gas itself are canceled. A sensor in accordance with the invention includes an sonic or ultrasonic transmitter and receiver, and a control module for performing calculations. The sensor can be used in various applications, including on-board inert gas generating systems (OBIGGS).