Patent ID: 6024189
Filing Date: 2000-02-15
Classification: F01M,F01N,F01P,F02B,F02F

Abstract:
A noise attenuating device for attenuating sound levels comprising:an elongate housing which defines a hollow interior chamber and includes an inlet and an outlet in communication with said interior chamber;an inner cone assembly which includes support means for supporting said inner cone assembly in said interior chamber, said inner cone assembly comprising a plurality of inner cones which taper radially inwardly from a base end to a tip end thereof, said inner cones being arranged in end-to-end relation such that said inner cones taper radially inwardly toward said outlet and define an elongate stack of said inner cones which extends longitudinally through said housing, said inner cones being axially spaced apart to define a deflector space between each adjacent pair of said inner cones, said housing being spaced radially outwardly away from said inner cones to define a longitudinal passage defined outwardly of said inner cone assembly, said longitudinal passage being in communication with said inlet and said outlet to define a flow path extending through said housing; anddiverter means disposed proximate said inlet which defines a deflector passage in communication with said inlet and said longitudinal passage for deflecting sound waves into said longitudinal passage and toward said inner cone assembly.