Patent ID: 8955643
Filing Date: 2015-02-17
Classification: F02C,F04D,F05D,G10K

Abstract:
1. An apparatus for attenuating noise and vibration, comprising: a first base plate having first base plate perforations defined therethrough; first and second spacers each extending from the first base plate, being spaced apart from each other, and defining a first channel therebetween; a first insert disposed in the first channel and having first insert perforations defined therethrough, the first base plate, the first and second spacers, and the first insert at least partially defining a first acoustic chamber therebetween, wherein the first base plate perforations and the first insert perforations are in communication with the first acoustic chamber; and a second base plate coupled to the first base plate, wherein a second insert is disposed on the second base plate, and the second insert and the first base plate at least partially define a second acoustic chamber therebetween.