NOZZLE BUSH FOR USE WITH IRRIGATION DEVICES

• US 20110147488A1
• Filed: 12/18/2009
• Published: 06/23/2011
• Est. Priority Date: 12/18/2009
• Status: Active Grant

• Current Assignee: Rain Bird Corporation
• Original Assignee: Rain Bird Corporation
• Inventors: Clark, Donald B., Walker, Samuel C., Jahan, Rowshan
• Granted Patent: US 8,567,696 B2
• Time in Patent Office: Days
• US Class Current: 239/203
• CPC Class Codes: B05B 1/267 the liquid or other fluent material being deflected in determined directions
• CPC Class Codes: B05B 1/3026 the controlling element being a gate valve, a sliding valve or a cock B05B1/3006, B05B1/326 take precedence; gate valves or sliding valves in general F16K3/00; cocks in general F16K5/00
• CPC Class Codes: B05B 15/74 driven by the discharged fluid

Abstract

A nozzle bush is provided for use with an irrigation device, such as a pop-up irrigation device. The nozzle bush includes a plurality of different nozzle bodies removably attached about its periphery, and may include an integrated flush port that can be attached to an irrigation device.

Claims

1. A unitary, plastic nozzle bush comprising:

a carrier having a planar body with a depending skirt configured to permit the carrier to be removably attached to a riser of an irrigation device, the carrier having an opening coextensive with the skirt and positioned to direct fluid flow outward from the opening in a direction inclined relative to a longitudinal center axis of the skirt when the skirt is attached to the riser during flushing of the irrigation device; and

a plurality of nozzle bodies each removably connected via a bridge to a periphery of the carrier, each of the nozzle bodies having a top, an outer skirt and at least one orifice for discharging fluid, the outer skirt being configured to permit the nozzle body to be removably attached to the riser.

2. The nozzle bush of claim 1, wherein the skirt of the planar body of the carrier is configured to removably snap onto the riser and the outer skirt of each of the nozzle bodies is configured to removably snap onto the riser.

3. The nozzle bush of claim 2, wherein:

the skirt of the planar body of the carrier has a free end portion with an inwardly extending annular protuberance at least partially insertable into an outwardly facing groove of the riser to removably snap the carrier to the riser; and

the outer skirt of each of the nozzle bodies has an inwardly extending protuberance configured to engage the groove of the riser when attached to the riser to removably snap the nozzle body to the riser.

4. The nozzle bush of claim 3, wherein the protuberance of the depending skirt of the carrier having substantially the same minimum diameter as the outer skirt of each of the nozzle bodies.

5. The nozzle bush of claim 1, wherein the opening of the carrier is recessed within the skirt and is formed between a first wall and a second wall, at least one of the walls being inclined at an angle other than perpendicular relative to the longitudinal center axis.

6. The nozzle bush of claim 1, wherein the carrier includes an integral pry bar for use in prying the nozzle bodies from the riser when one of the nozzle bodies is attached to the riser.

7. The nozzle bush of claim 1, wherein the nozzle bodies each have a depending inner skirt spaced radially inward from the outer skirt, the orifice being positioned between the inner and outer skirts.

8. The nozzle bush of claim 1, wherein the nozzle bodies each have a plurality of discharge orifices and a depending inner skirt spaced radially inward from the outer skirt, the inner skirt having at least one opening in fluid communication with the discharge orifices and upstream thereof, the size and number of the openings and the size and number of the orifices being selected to create a pressure drop therebetween.

9. The nozzle bush of claim 8, wherein the openings extend to a free edge of the inner skirt opposite the top of the nozzle body.

10. The nozzle bush of claim 8, wherein an intermediate skirt is positioned between the inner skirt and the outer wall and having a length selected to provide a circuitous flow path between the at least one opening and the discharge orifices.

11. The nozzle bush of claim 1, wherein the nozzle bodies each have a depending inner skirt spaced radially inward from the outer skirt, the orifice being positioned within the inner skirt.

12. The nozzle bush of claim 1, wherein at least one of the nozzle bodies includes an inclined deflector disposed below the top of the nozzle body, the deflector being spaced from an intermediate wall and being inclined relative to the intermediate wall, the deflector configured to direct fluid exiting the discharge orifice in a spray pattern when the nozzle body is attached to an operating irrigation device, the discharge orifice extending through the intermediate wall and coextensive with the inner skirt.