Patent ID: 7527125

Claim:
A muffler for an exhaust system of an internal combustion engine, comprising: a housing containing at least one absorption chamber which is filled with an absorbent material having an absorbent effect for airborne sound; a straight-through pipe carrying exhaust gas during operation of the muffler, said straight-through pipe passing through said housing; and at least one blind pipe connected at a first end laterally to said straight-through pipe, said at least one blind pipe being closed at a second end; wherein said blind pipe has a wall that is acoustically transmissive for airborne sound in an area running in said at least one absorption chamber, wherein said straight-through pipe passes through said housing without interruptions apart from a connection point through which said blind pipe is connected to said straight-through pipe, and wherein said straight-through pipe further comprises a wall that is not acoustically transmissive for airborne sound.