Patent ID: 7578454
Filing Date: 2009-08-25
Classification: A62C,B05B,Y10S

Abstract:
1. A spray device for fire fighting, comprising: an upper body, comprising: a lower body removably coupled to the upper body, and comprising: a plurality of nozzle tips removably inserted into the nozzle tip holes, and comprising: an interposition unit comprising an O-ring seated in the first and second annular grooves of the upper and lower bodies, wherein the spray device further comprises a hemispherical mesh having a convex shape, constituting the interposition unit and placed in a chamber, the chamber being defined at a center position between the upper body and the lower body; the upper body further comprises a second inclined surface with an enlarged diameter extending from a lower end of the through hole of the upper body to a lower part of the upper body and a tightening contact surface provided on an outer surface of a circular head part which comprises the upper part of the upper body; and the lower body further comprises a working groove provided on the inner surface of the lower body under the second internal thread of the lower body to allow the second internal thread to be formed on the inner surface of the lower body.