Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Svend Frederiksen0
Date of Patent
September 12, 2006
0Patent Application Number
102391600
Date Filed
March 21, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A silencer for silencing and also for filtering exhaust gases, contains at least one acoustic resonator chamber (13, 14, 15, 16) (Helmholtz frequency), at least one porous body (7, 8) the porous body (7, 8) occupying at least part of the chamber and at least one connecting passage (17) for leading gas from each one of the acoustic chamber wherein the connecting passage (17) extend along the outher surface of the porous body, so as to lead along a helical flow path (19).
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