Compact fuel burner with electric ignition means

Claim 1

A FUEL BURNER HEATING UNIT COMPRISING AN OUTER TUBE WITH A PERFORATED REAR WALL FOR THE ADMISSION OF AIR THERETHROUG, AN INNER TUBE SECURED CO-AXIALLY IN SAID OUTER TUBE, AN ASSEMBLY FOR INTIMATELY MIXING THE FUEL AND THE AIR BEING LOCATED BETWEEN SAID OUTER AND INNER TUBES, A CHAMBER SITUATED BETWEEN SAID ASSEMBLY AND REAR WALL, A FUEL SUPPLY PIPE COMMUNICATING WITH SAID CHAMBER FOR SUPPLYING FUEL THERETO, CONDUCTIVE MEANS IN SAID INNER TUBE HAVING A SPARK IGNITION ELECTRODE THEREON WHICH IS LOCATED BEYOND THE END OF SAID INNER TUBE REMOTE FROM THE REAR WALL OF SAID OUTER TUBE, MEANS IN SAID HEATING UNIT WHEREBY AIR IS CONDUCTED DIRECTLY TO THE CENTER OF COMBUSTION OF SAID HEATING UNIT, A NOZZLE OF A POROUS REFRACTORY MATERIAL CAPABLE OF BEING SUBSTANTIALLY SATURATED BY SAID FUEL AND NONDESTRUCTIBLE BY FIRE AFFIXED TO THE FRONT OF SAID OUTER TUBE IN A MANNER WHEREBY THE ELECTRIC SPARKS FROM THE IGNITION ELECTRODE ARE CONDUCTED TO THE OUTER TUBE THROUGH A PORTION OF SAID NOZZLE, THE FUEL SUPPLIED TO SAID CHAMBER BEING COMBINED WITH SAID AIR, SAID FUEL-AIR COMBINATION BEING INTIMATELY MIXED IN SAID ASSEMBLY, AND MEANS PROPELLING SAID FUEL-AIR COMBINATION INTO THE FRONT OF SAID FUEL BURNER HEATING UNIT AND SUBSTANTIALLY SATURATING SAID NOZZLE WHEREBY SAID ELECTRIC SPARKS IGNITE SAID FUEL-AIR COMBINATION IN SAID NOZZLE IN THE VICINITY OF SAID IGNITION ELECTRODE.