Venting and air intake system for heaters

Claim 1

IN FLUE MEANS FOR COMBUSTION DEVICES, THE COMBINATION INCLUDING, AN EXIT PIPE FOR COMBUSTION PRODUCTS, AN AIR INLET PIPE SURROUNDING AND RADIALLY SPACED AROUND ITS ENTIRE INNER PERIPHERY FROM SAID EXIT PIPE, SAID EXIT PIPE TERMINATING AXIALLY BEYOND SAID INLET PIPE, OUTLET CHAMBER MEANS FOR SAID EXIT PIPE HAVING AT LEAST ONE WALL AND HAVING A PERIPHERAL RADIALLY DIRECTED OUTLET OPENING, SAID OUTLET OPENING HAVING RADIAL DIMENSIONS SUBSTANTAILLY GREATER THAN THE DIAMETER OF THE EXIT PIPE, INLET CHAMBER MEANS FOR SAID INLET PIPE HAVING AT LEAST ONE WALL AND HAVING A PERIPHERAL RADIALLY DIRECTED INLET OPENING, SAID INLET OPENING HAVING RADIAL DIMENSIONS SUBSTANTIALLY LARGER THAN THE DIAMETER OF THE INLET PIPE, ONE WALL OF SAID OUTLET CHAMBER MEANS COMPRISING A BAFFLE PLATE DISPOSED INWARDLY IN AIRTIGHT ENGAGEMENT WITH AND PROJECTING RADIALLY OUTWARDLY FROM THE ENTIRE PERIPHERY OF SAID EXIT PIPE, ONE WALL OF SAID INLET CHAMBER MEANS COMPRISING A SECOND BAFFLE PLATE DISPOSED INWARDLY IN AIRTIGHT ENGAGEMENT WITH AND PROJECTING RADIALLY OUTWARDLY FROM THE ENTIRE PERIPHERY OF SAID EXIT PIPE AND SPACED AXIALLY FROM SAID FIRST BAFFLE PLATE TO PROVIDE A ZONE OF INSULATING ATMOSPHERIC AIR BETWEEN SAID OUTLET AND INLET CHAMBER MEANS.