Marion F Burzynski

US Patent:

20040093948, May 20, 2004

Filed:

Apr 3, 2003

Appl. No.:

10/406518

Inventors:

Eric Kelner - San Antonio TX, US
Ali Minachi - San Antonio TX, US
Thomas Owen - Helotes TX, US
Marion Burzynski - Converse TX, US
Steven Petullo - Fairfax VA, US

International Classification:

G01H005/00
G01N029/18
G01N029/02

US Classification:

073/597000

Abstract:

A sensor for measuring the speed of sound in a gas. The sensor has a helical coil, through which the gas flows before entering an inner chamber. Flow through the coil brings the gas into thermal equilibrium with the test chamber body. After the gas enters the chamber, a transducer produces an ultrasonic pulse, which is reflected from each of two faces of a target. The time difference between the two reflected signals is used to determine the speed of sound in the gas.