Patent ID: 7793758

Claim:
An exhaust muffler having a triangular cross section muffler chamber wherein; said exhaust muffler having a triangular cross section muffler chamber consists of: a triangular cross section muffler chamber having a first, a second and, a third side; a pair of end plates; said end plates each interposed with entrance/exhaust ports wherein said entrance/exhaust ports are interchangeable as one of an entrance port and one of an exhaust port; a central baffle having two surfaces angularly disposed wherein said central baffle is located on a central plane within the triangular cross section muffler chamber and having its base edges coincident with said first and said second sides; at least one pair of end baffles each located between said central baffle and each end plate wherein said pair of end plates are symmetrically disposed about said central plane; said central baffle and said end baffles overlapping to form an acoustically obstructing and reflecting means and non flow restricting path; and said exhaust muffler having a triangular cross section muffler chamber being reversible end for end wherein back pressure is the same in both directions.