Apparatus and method for applying fusible organic particulate in a coalesced film condition to a surface

Claim 1

AN APPLICATOR FOR APPLING FUSIBLE ORGANIC PARTICULATE MATERIAL TO A SURFACE TO FORM A COALESCED FILM OF SAID MATERIAL ON SAID SURFACE, SAID APPLICATOR COMPRISING: MEANS DEFINING A GAS MIXING CHAMBER, CONDUIT MEANS CONNECTED TO ONE END OF SAID MIXING CHAMBER AND ADAPTED FOR CONNECTION TO A SOURCE OF GASEOUS FUEL AND GASEOUS OXIDIZING MEDIUM, ASPIRATOR MEANS HAVING AN INLET SIDE, OUTLET SIDE AND AN ASPIRATION ORIFICE CONNECTED AT SAID INLET SIDE TO THE OTHER END OF SAID CHAMBER, A HOPPER FOR PARTICULATE MATERIAL, PASSAGE MEANS COMMUNICATING WITH THE AMBIENT AIR AND WITH SAID HOPPER BY VALVE MEANS FOR THE INTRODUCTION OF PARTICULATE MATERIAL AND AIR TO SAID ASPIRATOR MEANS, PIPE DISCHARGE MEANS CONNECTED AT ONE END TO THE OUTLET SIDE OF SAID ASPIRATOR MEANS, AND FLAME HOLDING MEANS POSITIONED AT THE OTHER END OF SAID DISCHARGE MEANS FOR FORMING THE FLAME PLASMA IN SPACED RELATION TO SAID OTHER END.