Exhaust silencer and heat recovery unit

Claim 1

AN EXHAUST SILENCER AND HEAT RECOVERY UNIT COMPRISING: A FIRST CIRCULAR ENDWALL; A CIRCULAR CENTRAL PARTITION MEANS; FIRST FLANGE MEANS EXTENDING INWARDLY FROM SAID FIRST ENDWALL TOWARD SAID CENTRAL PARTITION MEANS; A SECOND FLANGE MEANS EXTENDING FROM SAID CENTRAL PARTITION MEANS; A FIRST CYLINDRICAL SIDEWALL MEANS HAVING A FIRST END PORTION CONNECTED TO SAID FIRST FLANGE MEANS AND A SECOND END PORTION CONNECTED TO SAID SECOND FLANGE MEANS; SAID FIRST ENDWALL, CENTRAL PARTITION MEANS AND FIRST SIDEWALL MEANS DEFINING A CYLINDRICAL INLET CHAMBER MEANS; A SECOND CIRCULAR ENDWALL; A THIRD FLANGE MEANS EXTENDING INWARDLY FROM SAID SECOND ENDWALL TOWARD SAID CENTRAL PARTITION MEANS; A SECOND CYLINDRICAL SIDEWALL MEANS INTERCONNECTING SAID SECOND AND THIRD FLANGE MEANS TO DEFINE AN OUTLET CHAMBER MEANS; EXHAUST GAS INLET TUBE MEANS MOUNTED IN A CENTER PORTION OF SAID FIRST ENDWALL AND EXTENDING INTO SAID INLET CHAMBER MEANS; INTERMEDIATE EXHAUST GAS TUBE MEANS MOUNTED IN SAID CENTRAL PARTITION MEANS IN A POSITION SPACED APART FROM AND SUBSTANTIALLY PARALLEL TO SAID FIRST SIDEWALL MEANS, SAID INTERMEDIATE EXHAUST GAS TUBE MEANS EXTENDING FROM SAID INLET CHAMBER MEANS THROUGH SAID CENTRAL PARTITION MEANS AND INTO SAID OUTLET CHAMBER MEANS; AN EXHAUST GAS OUTLET TUBE MEANS MOUNTED IN A CENTRAL PORTION OF SAID SECOND ENDWALL AND EXTENDING OUTWARDLY FROM SAID OUTLET CHAMBER MEANS; SAID INLET, INTERMEDIATE AND OUTLET EXHAUST GAS TUBE MEANS HAVING LONGITUDINAL AXES GENERALLY PARALLEL TO LONGITUDINAL AXES OF SAID INLET AND OUTLET CHAMBER MEANS; A THIRD SIDEWALL MEANS FASTENED TO AN OUTER SURFACE OF SAID FIRST SIDEWALL MEANS; A PLURALITY OF FLUID PASSAGE MEANS DEFINED BY INNER SURFACES OF A PLURALITY OF ARCUATE OUTWARDLY PROJECTING PORTIONS OF SAID THIRD SIDEWALL MEANS AND OUTER SURFACES OF A PLURALITY OF ARCUATE INWARDLY PROJECTING PORTIONS OF SAID FIRST SIDEWALL MEANS, SAID FLUID PASSAGE MEANS EXTENDING AROUND SAID FIRST SIDEWALL MEANS IN A DIRECTION TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID INLET CHAMBER MEANS; FIRST OUTWARDLY PROTRUDING MANIFOLD MEANS FORMED BY AN OUTWARDLY PROJECTING PORTION OF SAID THIRD SIDEWALL MEANS AND AN INWARDLY PROJECTING PORTION OF SAID FIRST SIDEWALL MEANS, SAID FIRST MANIFOLD MEANS EXTENDING PARALLEL TO THE LONGITUDINAL AXIS OF SAID INLET CHAMBER AND INTERCONNECTING FIRST END PORTION OF SAID PLURALITY OF FLUID PASSAGE MEANS; AND A SECOND OUTWARDLY PROTRUDING MANIFOLD MEANS FORMED BY AN OUTWARDLY PROTRUDING PORTION OF SAID THIRD SIDEWALL MEANS AN INWARDLY PROTRUDING PORTION OF SAID FIRST SIDEWALL MEANS, SAID SECOND MANIFOLD MEANS EXTENDING PARALLEL TO THE LONGITUDINAL AXIS OF SAID INLET CHAMBER MEANS AND INTERCONNECTING SECOND END PORTIONS OF SAID PLURALITY OF FLUID PASSAGE MEANS, WHEREBY A COOLING FLUID FLOWS FROM SAID FIRST MANIFOLD MEANS, THROUGH SAID FLUID PASSAGE MEANS AND INTO SAID SECOND MANIFOLD MEANS IN A DIRECTION TRANSVERSE TO THE GENERAL DIRECTION OF FLOW OF EXHAUST GASES THROUGH SAID INLET, INTERMEDIATE AND OUTLET GAS TUBE MEANS.