Muffler constructed to vaporize condensate from inner chambers

Claim 1

A MUFFLER FOR RECEIVING HOT EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE CARRYING CORROSIVE VAPORS WHICH TEND TO CONDENSE AND FORM CORROSIVE CONDENSATE IN THE MUFFLER, SAID MUFFLER BEING OF THE TYPE HAVING A CASING AND INTERNAL SILENCING STRUCTURE DIVIDING THE CASING INTO A PLURALITY OF CHAMBERS, COMPRISING INLET AND OUTLET GAS PASSAGES IN SAID MUFFLER, A BOTTOM WALL PORTION FORMED BY SAID CASING AND BEING LOCATED BELOW SAID OUTLET GAS PASSAGE AND EXTENDING THROUGH SAID CHAMBERS, TRANSVERSE WALL PORTIONS INTERSECTING SAID BOTTOM WALL PORTION, CONDENSATE SUMP MEANS FOR COLLECTING AND HOLDING CONDENSATE ALONG SAID BOTTOM WALL PORTION BETWEEN SAID TRANSVERSE WALL PORTIONS, INTERNAL GAS PASSAGE MEANS CONNECTING SAID INLET AND OUTLET GAS PASSAGES AND BEING POSITIONED AND ARRANGE TO PROVIDE A GAS FLOW PATH THROUGH THE SAID CHAMBERS RESULTING IN SUBSTANTIAL TEMPERATURE VARIATIONS IN DIFFERENT ONES OF SAID CHAMBERS DURING AT LEAST SOME SUBSTANTIAL PERIODS OF USE OF SAID MUFFLER, THE TEMPERATURE OF AT LEAST ONE OF SAID CHAMBERS BEING ABOVE THE VAPORIZATION POINT OF CORROSIVE CONDENSATE COLLECTED IN SAID SUMP MEANS IN SAID MUFFLER AND THE TEMPERATURE OF AT LEAST ONE OTHER OF SAID CHAMBERS BEING BELOW THE VAPORIZATION POINT OF CORROSIVE CONDENSATE COLLECTED IN SAID SUMP MEANS IN SAID MUFFLER, SAID SUMP MEANS IN SAID CHAMBERS BEING CONNECTED TO SAID OUTLET GAS PASSAGE ONLY BY SAID INTERNAL GAS PASSAGE MEANS, AND CORROSIVE CONDENSATE DRAINAGE MEANS EXTENDING ONLY ALONG THE BOTTOM WALL PORTION AND CONNECTING ALL OF THE CHAMBERS AT A TEMPERATURE BELOW THE VAPORIZATION POINT OF THE CORROSIVE CONDENSATE TO CHAMBERS AT A TEMPERATURE ABOVE THE VAPORIZATION POINT OF THE CORROSIVE CONDENSATE WHEREBY CORROSIVE CONDENSATE IN SAID MUFFLER CAN FLOW TO THE CHAMBERS AT THE TEMPERATURE ABOVE THE VAPORIZATION POINT FOR VAPORIZATION THEREIN AND REMOVAL WITH THE EXHAUST GASES PASSING THERETHROUGH.