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:
May. 15, 2018
Filed:
May. 02, 2012
Applicants:
Lukas Emmenegger, Dübendorf, CH;
Jana Jágerská, Zürich, CH;
Béla Tuzon, Dübendorf, CH;
Inventors:
Assignee:
WILCO AG, Wohlen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 5/02 (2006.01); G01N 21/3504 (2014.01); G01M 3/22 (2006.01); G01M 3/38 (2006.01); G01N 33/00 (2006.01); G01N 21/03 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3504 (2013.01); G01M 3/226 (2013.01); G01M 3/38 (2013.01); G01N 33/0036 (2013.01); G01N 21/031 (2013.01); G01N 2201/0697 (2013.01); G01N 2201/0698 (2013.01); G01N 2201/06113 (2013.01);
Abstract
A method and a system for detecting the presence of propellant gas in a gaseous sample exploit laser light especially in the 3.30-3.5 μm range. The propellant can be propane, n-butane, i-butane, dimethyl ether, methyl ethyl ether, HFA 134a, HFA 227, or any other propellant exhibiting absorption in the requisite wavelength range. The presence of the application of this method in leak testing of propellant-containing containers such as aerosols or fuel canisters, permits high-speed, high accuracy leak detection capable of replacing existing testing methods.