Ventilating paint booths

Claim 1

IN COMBINATION, A SPRAY PAINTING BOOTH HAVING SPACED, LONGITUDINALLY EXTENDING SIDE WALLS WITH MEANS DEFINING VENTILATING AIR INLETS CONNECTED TO THE UPPER PORTION OF SAID SIDE WALLS TO DIRECT A VENTILATING AIR STREAM DOWNWARDLY THEREBETWEEN, EACH OF SAID SIDE WALLS HAVING A DOWNWARDLY DEPENDING BOTTOM WALL, SAID BOTTOM WALLS CONVERGING SO AS TO BE SUBSTANTIALLY V-SHAPED IN CROSS SECTION AND TERMINATING IN AN ELONGATED SLOT HAVING INWARDLY PROJECTING FLANGES FORMING A THROAT SECTION, AND MEANS TO CAUSE SAID VENTILATING AIR TO MOVE THROUGH SAID SLOT FROM SAID VENTILATING AIR INLETS; A DROP SEPARATOR CHAMBER FOR THE VENTILATING AIR UNDERLYING SAID SLOT, AND HAVING AN AIR EXHAUST MEANS AT THE UPPER PORTION OF SAID CHAMBER AND A LIQUID REMOVING MEANS AT THE LOWER PORTION OF SAID CHAMBER, HAVING AN INLET CHANNEL, SAID INLET CHANNEL HAVING A PAIR OF SPACED DIVERGING SIDE WALLS DEPENDING FROM OPPOSITE SIDES OF SAID SLOT; AND LIQUID SUPPLY MEANS HAVING MEANS DEFINING A LIQUID INLET EXTENDING LONGITUDINALLY ALONG BOTH OF SAID DEPENDING BOTTOM WALLS ALONG THE UPPER EDGES THEREOF AND ADAPTED TO SUPPLY A CONTINUOUS THIN FILM OF LIQUID ON SAID V-SHAPED BOTTOM WALLS FLOWING DOWNWARDLY TOWARD SAID SLOT, SAID INLET CHANNEL AND SAID V-SHAPED WALLS FORMING A VENTURI PASSAGE, FLANGES PROJECTING INTO THE THROAT OF SAID VENTURI PASSAGE SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF FLOW OF SAID ENTERING AIR STREAM SO THAT THE CONTINUOUS FILM OF LIQUID FLOWING DOWNWARDLY TOWARD SAID SLOT IS INJECTED INTO SAID ENTERING AIR SUBSTANTIALLY PERPENDICULAR TO SAID ENTERING AIR THEREBY ALLOWING ATOMIZATION OF SAID LIQUID, SAID LIQUID SUPPLY MEANS ADAPTED TO FORM A CONTINUOUS FILM ON THE SIDE WALLS OF SAID INLET CHANNEL FLOWING DOWNWARDLY INTO SAID DROP SEPARATOR TO THEREBY PROTECT SAID BOOTH BOTTOM WALLS AND SAID INLET SIDE WALLS FROM THE DEPOSIT OF PAINT SPRAY ENTRAINED IN SAID VENTILATING AIR.