Spray nozzle with improved asymmetrical fluid discharge distribution

A spray nozzle for producing an asymmetrically distributed fluid discharge pattern wherein the location of the maximum fluid discharge is offset from the center of the fluid discharge pattern, the spray nozzle comprising:

• a body portion having a longitudinally extending internal fluid passageway which terminates in a substantially hemispherical dome shaped end wall, the fluid passageway having a longitudinal axis, and
• a discharge orifice formed in said end wall with edges of the discharge orifice being in intersecting relation to an inner side of said dome-shaped end wall, said discharge orifice being defined by first and second openings interposed upon each other, said first opening being relatively rounder than said second opening, said second opening being more elongated than said first opening and extending partially beyond a perimeter of the first opening such that at least a portion the fluid discharge pattern produced by the discharge orifice has a continuous non-linear taper in the amount of fluid discharged from the location of maximum discharge to a point of minimum flow at one end of the discharge pattern so as to form a curve which for a substantial portion thereof is below a line connecting the point of maximum discharge with the point of minimum flow at the one end of the discharge pattern,
• said relatively rounder first opening being formed by a first elongated slot which extends through said end wall, said first elongated slot having angled sides which define an included angle, said second more elongated opening being defined by a second elongated slot which extends through said end wall having angled sides that define an included angle that is less than the included angle defined by the angled sides of the first elongated slot, said first elongated slot being oriented such that a line extending longitudinally along a bottom of said first elongated slot and through the axis of said longitudinal fluid passageway lies in a first plane, said second elongated slot being oriented that such a line extending longitudinally alone the bottom of the second elongated slot and through the axis of said longitudinal internal fluid passageway lies in a second plane, and said first plane extending at an angle closer to a perpendicular relative to the longitudinal axis of the internal fluid passageway than the second plane.