Gaseous fuel burner for producing radiant heat

Claim 1

A BURNER ASSEMBLY FOR GASEOUS FUEL COMPRISING, CERAMIC MEANS HAVING A FLAT FACE THROUGHOUT AND IN A SINGLE PLANE CONFRONTING A SPACE TO BE FIRED, SAID CERAMIC MEANS HAVING AN OPENING THERETHROUGH, A CONDUIT OF SMALLER CROSS SECTION THAN SAID OPENING ARRANGED THEREIN, AN END WALL ARRANGED TRANSVERSELY OF AND SPACED FROM THE DOWNSTREAM END OF SAID CONDUIT, THE PERIMETER OF SAID END WALL PROJECTING BEYOND THE PERIMETER OF SAID CONDUIT, AN ANNULAR WALL JOINING THE PERIMETER OF SAID END WALL WITH THE DOWNSTREAM END OF SAID CONDUIT PROVIDING A BURNER HEAD WITH A CHAMBER THEREWITHIN FOR RECEIVING GASEOUS FUEL UNDER PRESSURE FROM SAID CONDUIT, SAID ANNULAR WALL HAVING A SPHERICAL SHAPED OUTER SURFACE AND HAVING A PLURALITY OF ELONGATED SLOTS THEREIN ALL EXTENDING IN THE DIRECTION OF THE AXIS OF THE BURNER HEAD, SAID ANNULAR WALL HAVING A THICKNESS OF SUCH MAGNITUDE WITH RELATION TO THE WIDTH OF SAID SLOTS AS TO PREVENT BACKFLASH, UPSTREAM ENDS OF SAID SLOTS BEING POSITIONED ADJACENT THE FACE OF SAID CERAMIC MEANS AND DOWNSTREAM OF SAID FACE, AND THE DOWNSTREAM ENDS OF SAID SLOTS TERMINATING ADJACENT THE UPSTREAM FACE OF SAID END WALL.