Patent ID: 6612506
Filing Date: 2003-09-02
Classification: B05B

Abstract:
A spray gun head comprising a diverter bushing, a nozzle body, an air cap and a locking ring;the spray gun head including (a) a ring bearing, (b); a threaded section provided on an outer periphery of the ring bearing, (c); a first vent hole provided in an inner base of the ring bearing, the first vent hole being connected through a low pressure air inlet, and (d); a nozzle carrying tube protruding from the center of the ring bearing, the nozzle carrying tube having a threaded section provided on an inner wall thereof, the nozzle body being screwed to the nozzle carrying tube, the nozzle carrying tube having a circular groove formed around an outer circumference thereof, a second vent hole being provided at the base of the circular groove, both of the first and second vent holes being connected through the low pressure air inlet; the nozzle body including (a) a spreader hole penetrating a center of the nozzle body, (b); a pillar provided at a rear of the nozzle body, the pillar having a threaded section formed on a terminal end thereof and being screwed to the threaded section of the nozzle carrying tube, (c); a nozzle provided at a front end of the nozzle body, (d); an airflow guide ring provided at an outer diameter of the pillar and having a circular surface, and (e); a plurality of airflow guide holes provided on the circular surface of the airflow guide ring; the air cap including (a) a circular hole provided at a center of the air cap,(b); a plurality of first jets and second jets separately provided on an outer circular surface of the air cap, the first and second jets being connected through the low pressure air inlet; and (c) a flange protruded from an inner side of the air cap; the locking ring being a hollow ring cover provided with a threaded section on the inner wall; and, the diverter bushing having a circular shape and; including a first outer diameter and a second outer diameter, the first outer diameter having; a vertical circular surface provided with a plurality of jets, and the first outer diameter being inserted into the ring bearing of the spray gun head, the second outer diameter of the diverter bushing being engaged to the circular groove of the nozzle carrying tube, a first air port being formed between the diverter bushing and the ring bearing, the pillar of the nozzle body penetrating through the diverter bushing with the threaded section of the pillar engaging the threaded section of the nozzle carrying tube, the airflow guide ring of the nozzle body being inserted through the diverter bushing, a second air port being formed between the diverter bushing and the pillar, the nozzle body being guarded by the air cap and the nozzle being exposed from the circular hole at the center of the air cap, the locking ring secures the diverter bushing, the nozzle body and the air cap by pressing against the flange of the air cap and being screwed to the ring bearing of the spray gun head, and the space respectively in the first air port and the second air port being adjusted by turning the locking ring clockwise or counter-clockwise to change the pressure of the air ejected from the first jets and the second jets.