Uniflow exhaust muffler

Claim 1

AN EXHAUST MUFFLER COMPRISING AN ELONGATED TUBULAR MEMBER HAVING OPPOSITE OPEN INLET AND OUTLET END PORTIONS, INLET AND OUTLET CLOSURE END WALLS SECURED TO THE INLET AND OUTLET ENDS OF SAID TUBULAR MEMBER RESPECTIVELY AND EACH END WALL INCLUDING AN OPENING HAVING AN OUTWARDLY PROJECTING FITTING OPERATIVELY ASSOCIATED THEREWITH ADAPTED TO BE SECURED TO A PIPE SECTION OF AN EXHAUST SYSTEM, TRANSVERSELY EXTENDING AND LONGITUDINALLY SPACAED BAFFLE PLATES SECURD IN SAID TUBULAR MEMBER AND EACH SECURED ABOUT SUBSTANTIALLY ITS ENTIRE PERIPHERY TO THE CORRESPONDING INNER SURFACES OF SAID TUBULAR MEMBER, SAID TUBULAR MEMBER INCLUDING UPPER AND LOWER WALLS INTERCONNECTED BY MEANS OF OPPOSITE SIDE WALLS, SAID BAFFLE PLATES EACH ON ONE SIDE OF SAID TUBULAR MEMBER BEING PROVIDED WITH A PLURALITY OF SMALL DIAMETER APERTURES, THE APERTURES PORTIONS OF SAID ADJACENT PLATES BEING DISPOSED ON OPPOSITE SIDES OF SAID TUBULAR MEMBER WHEREBY A REVERSELY CURVING PATH EXTENDING LONGITUDINALLY THROUGH