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Class Information
Number: 181/203
Name: Acoustics > Sound-modifying means > Housing or enclosure (e.g., sound confining and absorbing) > Machine type enclosure > Reaction engine test chamber
Description: Subject matter wherein a reaction-type engine is completely enclosed while undergoing a testing operation.

Patents under this class:

Patent Number Title Of Patent Date Issued
8689932 On-base enclosure Apr. 8, 2014
8544596 Enclosure for thermal equipment and method of construction Oct. 1, 2013
7918310 Noise attenuation device for reducing jet engine noise during testing Apr. 5, 2011
7717229 Gas turbine exhaust sound suppressor and associated methods May. 18, 2010
7600605 Aircraft ground run-up enclosure Oct. 13, 2009
7484593 Acoustic structure and method of manufacturing thereof Feb. 3, 2009
6772856 Fine jet control-type sound absorption system Aug. 10, 2004
6340068 Use of a material with a high internal damping for a component of a sound-emitting machine Jan. 22, 2002
6244377 Apparatus for absorbing machinery sound Jun. 12, 2001
6119808 Transportable acoustic screening chamber for testing sound emitters Sep. 19, 2000
5377534 Ground test installation for the jet engines of an airliner Jan. 3, 1995
4997058 Sound transducer Mar. 5, 1991
3941205 Method and means for controlling the air pressure in a sound-proofed hangar for testing jet engines Mar. 2, 1976

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