Gas-fueled infrared generator

Claim 1

AN INFRA RED GENERATOR COMPRISING A PLENUM CHAMBER HAVING A BOTTOM WALL HAVING A STEP GENERALLY MIDWAY OF THE LENGTH THEREOF, A VENTURI MIXING CHAMBER HAVING AN OUTLET DISPOSED ADJACENT TO THE STEP ON SAID BOTTOM WALL IN THE LOWER PART OF SAID CHAMBER, A BAFFLE CARRIED BY SAID STEP AND HAVING A PORTION EXTENDING TOWARD AND CLOSELY SPACED FROM THE VENTURI OUTLET AND ABOVE THE PATH OF TRAVEL OF GASES FROM THE VENTURI OUTLET AND A PART EXTENDING BEYOND THE STEP OVER THE BOTTOM WALL OF THE CHAMBER IN SPACED RELATION THERETO, A GENERATOR GRID FRAME CARRIED BY SAID CHAMBER AT THE OUTLET THEREOF, A GENERATOR GRID ASSEMBLY SLIDABLY CARRIED BY SAID FRAME AND INCLUDING A FINE MESH SAFETY SCREEN, A FINE MESH GENERATOR SCREEN AND A STRETCHER SCREEN, SAID GENERATOR SCREEN BEING FOLDED ABOUT THE EDGES OF THE STRETCHER AND SAFETY SCREEN AND ALL BEING CLOSELY JUXTAPOSED TO EACH OTHER.