Muffler

Claim 1

IN A MUFFLER, A CASING HAVING A BODY PORTION OF MAXIMUM WIDTH AND TAPERED END PORTIONS AT OPPOSITE ENDS OF THE BODY PORTION AND AN INLET AND AN OUTLET BUSHING CONNECTED RESPECTIVELY TO THE ENDS OF THE TAPERED PORTIONS, FOUR SPACED PARTITIONS LOCATED IN THE BODY PORTION OF THE CASING AND PROVIDING IN DOWNSTREAM ORDER A TRI-FLOW CHAMBER LOCATED BETWEEN THE FIRST AND SECOND OF THE FOUR PARTITIONS, A SPIT CHAMBER LOCATED BETWEEN THE SECOND AND THIRD OF SAID PARTITIONS, AND A TUNING CHAMBER LOCATED BETWEEN THE THIRD AND FOURTH OF SAID PARTITIONS, AN INLET TUBE SUPPORTED IN THE FIRST PARTITION AND TERMINATING UPSTREAM OF THE SECOND PARTITION AND BEING LOUVERED IN THE TRI-FLOW CHAMBER, AN OUTLET TUBE EXTENDING THROUGH THE LAST THREE PARTITIONS AND EMPTYING INTO THE TAPERED SECTION OF THE CASING ADJACENT THE OUTLET BUSHING, SAID OUTLET TUBE BEING LOUVERED IN THE TRI-FLOW CHAMBER AND IN THE SPIT CHAMBER, A TUNING TUBE SUPPORTED IN THE SECOND AND THIRD PARTITIONS AND EXTENDING INTO THE TUNING CHAMBER AND FORMING THE ONLY INLET AND OUTLET OF THE TUNING CHAMBER, SAID INLET TUBE AND OUTLET TUBE BEING IN ENGAGEMENT WITH EACH OTHER AND SPOTWELDED TOGETHER, SAID INLET TUBE BEING OUT OF ALIGNMENT WITH THE INLET BUSHING, THE INLET OF THE OUTLET TUBE BEING LOCATED IN THE TRIFLOW CHAMBER AND DOWNSTREAM FROM THE FIRST PARTITION, SAID TRI-FLOW CHAMBER COMPRISING MEANS FOR SILENCING MEDIUM AND HIGH FREQUENCIES, SAID SPIT CHAMBER COMPRISING MEANS FOR SILENCING HIGH FREQUENCIES, AND SAID TUNING CHAMBER COMPRISING MEANS FOR SILENCING LOW FREQUENCIES, THE SPACE IN SAID CASING BEING SAID INLET BUSHING AND SAID FIRST PARTITION COMPRISING AN UNOBSTRUCTED INLET CHAMBER HAVING THE INLET TUBE AS ITS OUTLET, AND THE SPACE IN SAID CASING BETWEEN THE FOURTH PARTITION AND THE OUTLET BUSHING COMPRISING AN UNOBSTRUCTED OUTLET CHAMBER HAVING THE OUTLET TUBE AS ITS INLET.