Gas burner

Claim 1

A NON-GLOWING PRESSURE-TYPE HIGH TEMPERATURE COMBUSTION BURNER COMPRISING: A HOUSING; CONDUIT INLET MEANS INTO SAID HOUSING ADAPTED TO INTRODUCE PRESSURIZED COMBUSTIBLE GASEOUS MIXTURE; AN OPENING MEANS IN THE WALL OF SAID HOUSING; A RELATIVELY COARSE METAL SCREEN MESH IN SAID HOUSING COVERING SAID OPENING AND OVERLAPPING THE PERIPHERAL EDGE THEREOF; AN INTEGRAL FELT LAYER OF COMPRESSIBLE, FIBROUS, REFRACTORY INSULATING MATERIAL IN SAID HOUSING SUBSTANTIALLY COEXTENSIVE WITH SAID OPENING MEANS, SAID MATERIAL BEING FREE OF ANY CATALYST; SAID LAYER HAVING A UNIFORM POROSITY AND A SURFACE OF MYRIADS OF ADJACENT MINUTE ORIFICES FREE FROM ANY PINHOLES; THE FIBERS OF SAID LAYER BEING COMPACTED TO AN INTERENGAGED AND INTEGRATED STATE CAPABLE OF WITHSTANDING PRESSURES EQUIVALENT TO SEVERAL INCHES OF WATER PER SQUARE INCH WITHOUT SHIFTING OF SAID FIBERS; SAID FELT LAYER HAVING UNIFORMITY OF POROSITY COMPLETELY THERETHROUGH TO ITS OUTER SURFACE; A SHEET OF RELATIVELY FINE MESH SCREEN COEXTENSIVE WITH AND OVER SAID FELT LAYER TO RETAIN THE ININDIVIDUAL FIBERS ON THE SURFACE OF SAID LAYER FROM PROJECTING UP AND BLOWING OFF; A RELATIVELY COARSE MESH, RIGID METAL SCREEN WRAPPED OVER SAID FINE MESH SCREEN AND FASTENED AROUND PORTIONS OF THE OUTSIDE OF SAID HOUSING TO HOLD SAID FINE MESH SCREEN IN PLACE AND PREVENT IT FROM BLOWING OUTWARDLY UNDER OPERATIONAL HEAT; AND SAID FELT LAYER FITTING INTO ENGAGEMENT ON ITS PERIPHERY AGAINST SAID HOUSING, AND BEING INITIALLY SLIGHTLY LARGER IN DIAMETER THAN SAID OPENING IN SAID HOUSING, TO SEAL AGAINST SAID HOUSING AND PREVENT EDGE LEAKAGE.