Nozzle tip for agricultural sprayers

• US 6,712,293 B2
• Filed: 06/20/2002
• Issued: 03/30/2004
• Est. Priority Date: 06/20/2002
• Status: Expired due to Term

• Current Assignee: Sta-Rite Industries LLC (Pentair Plc (Ireland))
• Original Assignee: HY-PRO Corporation (Donaldson Company Incorporated)
• Inventors: Swan, Trevor William Bartlett
• Primary Examiner(s): Nguyen, Dinh Q.
• Application Number:
  US10/175,938
• Publication Number:
  US 20030234301A1
• Time in Patent Office: 649 Days
• Field of Search: 239/419.5, 239/424.5, 239/425.5, 239/428.5, 239/434.5, 239/429, 239/270, 239/335, 239/552, 239/554, 239/568, 239/597, 239/600, 239/601, 239/550
• US Class Current: 239/429
• CPC Class Codes: B05B 1/046 Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
• CPC Class Codes: B05B 1/267 the liquid or other fluent material being deflected in determined directions
• CPC Class Codes: B05B 7/0425 without any source of compressed gas, e.g. the air being sucked by the pressurised liquid

Abstract

Nozzle attached to the boom of agricultural sprayers each include an improved air eduction system and discharge slot eliminating the need to change the angle of the boom and nozzle to ensure a comprehensive spray pattern irrespective of boom height and improved penetration of the material sprayed into and under the crop canopy.

Claims

1. A nozzle for agricultural sprayers comprising:

(a) an outer member having a flange, a central section, a cylindrical extension terminating in a semi-spherical tip, a lumen extending therethrough, and a plurality of air eduction openings, said semi-spherical tip including a discharge slot having a first wall and a second wall, said second wall positioned at an angle in a range of 10°

to 20°

from a longitudinal axis of said nozzle; and

(b) an inner member insertable into the lumen of the outer member, said inner member having a flange, a central ring, an extension, a lumen and at least one opening which cooperates with said plurality of air eduction openings in the outer member to educt air into the lumen of the inner member when liquid passed through the lumen of the inner member, into the extension of the outer member and out the discharge slot of the semi-spherical tip of the outer member.

2. The nozzle of claim 1 wherein the angle at which said second wall is positioned is 15°

from said longitudinal axis.

3. The nozzle of claim 1 wherein said opening of said inner member is located between said central ring and said extension of said inner member.

4. The nozzle of claim 1 wherein said inner member also includes a pair of posts which hold the central ring and said extension of said inner member in spaced apart relation to create said at least one opening of the inner member.

5. The nozzle of claim 1 wherein when said inner member and said outer member are assembled, a chamber is created between a portion of said inner member and a portion of said outer member, said chamber cooperating with said plurality of air eduction openings in said outer member and said at least one opening of said inner member to educt air into the liquid passing through the nozzle.