US 11,655,038 B2
Aircraft air supply and contaminant detection system
Jagadeswara Reddy Karra, Ellington, CT (US); Zissis A. Dardas, Worcester, MA (US); and Peter R. Harris, West Hartford, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Feb. 19, 2021, as Appl. No. 17/179,520.
Application 17/179,520 is a division of application No. 16/028,999, filed on Jul. 6, 2018, granted, now 10,967,977.
Prior Publication US 2021/0188447 A1, Jun. 24, 2021
Int. Cl. B01D 53/02 (2006.01); B64D 13/06 (2006.01); B01D 53/04 (2006.01); B01D 53/30 (2006.01); B64D 13/02 (2006.01); G01N 31/22 (2006.01); G01N 33/00 (2006.01)
CPC B64D 13/06 (2013.01) [B01D 53/04 (2013.01); B01D 53/30 (2013.01); B64D 13/02 (2013.01); G01N 31/224 (2013.01); G01N 33/0004 (2013.01); B01D 2253/204 (2013.01); B01D 2257/556 (2013.01); B01D 2259/4009 (2013.01); B01D 2259/4575 (2013.01); B64D 2013/0651 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of testing for tricresyl phosphate, comprising:
directing light from a light source to a light detector;
contacting a test gas with a metal organic framework on an exterior surface of an optical guide in communication with the light between the light source and the light detector; and
detecting a change in light intensity or spectral properties of light received by the light detector caused by adsorption of tricresyl phosphate by the metal organic framework.