Patent ID: 6968922

Claim:
An exhaust apparatus for a vehicle wherein a spark arrester includes a tubular spark arrester body with a front end and a rear end, said rear end of said spark arrester being mounted adjacent to a rear portion in a muffler connected to an exhaust pipe and a tail pipe inserted in said spark arrester body, said tail pipe being mounted on said spark arrester wherein exhaust gas flowing through said muffler is discharged into the atmospheric air from said tail pipe through said spark arrester comprising: a first separator being disposed between the muffler and the spark arrester body with the front end of the spark arrester body, the spark arrester body extending beyond the first separator for forming a first expansion chamber; said first separator including an annular plate portion positioned adjacent to an inner face of said spark arrester body for forming a throttle path therebetween, said annular plate portion being securely mounted on said muffler; a plurality of expansion chambers for communicating with each other through said throttle path, said plurality of expansion chambers being formed between said tail pipe and said spark arrester body with said annular plate portion disposed; and a cap attached to the front end of said spark arrester body for closing an opening at the front end of said spark arrester body, said cap extending beyond the first separator, said spark arrester body having an opening extending in an outer peripheral surface thereof for providing communication between at least a first expansion chamber and a second expansion chamber, and said tail pipe extending within said spark arrester body with front end of said tail pipe extending beyond said first separator.