Streamlined monolithic internal combustion engine muffler

A monolithic muffler mounted in fluid communication with an exhaust stack of an internal combustion engine for damping the noise generated during combustion within the engine, said muffler comprising in combination:

• a. a one piece body having a butt end in engagement with the outlet of the exhaust stack for minimizing reverberation and vibration induced by the exhaust gases expelled from the exhaust stack;
• b. a plurality of cavities collectively having a transverse cross-sectional area no greater than the cross-sectional area of the exhaust stack outlet and extending from the butt end into said body for receiving the exhaust gases flowing through the exhaust stack outlet,
• c. each cavity of said plurality of cavities having curved surfaces for reflecting the pressure and audible frequency wave forms generated by the combustion within the engine;
• d. each adjacent cavity being separated one from another by a solid separation;
• e. at least one passageway extending from each said cavity for conveying the exhaust gases within the corresponding one of said cavities into the atmosphere;
• f. whereby, said plurality of cavities attenuate the pressure and audible frequency wave forms of the exhaust gases expelled from the engine and said plurality of passageways diffusingly convey the exhaust gases into the atmosphere.