IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0025499
(2008-02-04)
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등록번호 |
US-8640978
(2014-02-04)
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발명자
/ 주소 |
- Gregory, Christian T.
- Alarcon, John J.
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출원인 / 주소 |
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대리인 / 주소 |
Fitch, Even, Tabin & Flannery, LLP
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인용정보 |
피인용 횟수 :
1 인용 특허 :
1 |
초록
▼
An improved irrigation sprinkler nozzle is provided for enhanced short range or close-in distribution of water for irrigating vegetation and the like positioned relatively close to the sprinkler. The improved sprinkler nozzle includes a nozzle passage for outward projection of a water stream, at lea
An improved irrigation sprinkler nozzle is provided for enhanced short range or close-in distribution of water for irrigating vegetation and the like positioned relatively close to the sprinkler. The improved sprinkler nozzle includes a nozzle passage for outward projection of a water stream, at least a portion of which is defined by a generally vertically oriented, fan-shaped spray pattern. A lower margin of the nozzle passage defining this fan-shaped pattern is lined with a plurality of forwardly extending ramps each formed with a selected width and a different declination angle. A portion of the water discharged through the nozzle passage is forced and guided downwardly along these ramps for enhanced close-in distribution of water near the sprinkler.
대표청구항
▼
1. An irrigation sprinkler nozzle for discharging a stream of fluid, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water st
1. An irrigation sprinkler nozzle for discharging a stream of fluid, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water stream to irrigate surrounding terrain, the water stream including an upper stream segment to irrigate a terrain zone disposed a first distance from the sprinkler nozzle and a lower stream segment to irrigate terrain disposed a second distance from the sprinkler nozzle, the first distance being greater than the second distance;said nozzle outlet including a lower margin, an upper margin and a pair of side margins connecting the upper and lower margins, and having an outboard side defining a front face, the lower margin, upper margin and side margins surrounding the nozzle outlet at the front face; anda plurality of discrete ramps formed at said lower margin of said nozzle outlet and extending forwardly and angularly downwardly therefrom, the upper and side margins being free of said ramps, each such discrete ramp having a different selected declination angle than an adjacent ramp and arranged in a side-by-side array along said lower margin of said nozzle outlet such that a sidewall is formed between adjacent ramps, each of said ramps having an upstream end disposed a distance upstream relative to said front face of said nozzle outlet, whereby a portion of the water passing through said nozzle outlet is guided downwardly generally along said ramps to form at least part of the lower stream segment to irrigate surrounding terrain relatively close to the sprinkler nozzle. 2. The irrigation sprinkler nozzle of claim 1 wherein each of said ramps has a selected width and a selected different declination angle. 3. The irrigation sprinkler nozzle of claim 1 wherein said plurality of ramps includes at least three ramps. 4. The irrigation sprinkler nozzle of claim 1 wherein said ramps are arranged in a side-by-side array spanning substantially the entire width of said lower margin of said nozzle outlet. 5. The irrigation sprinkler nozzle of claim 1 wherein said nozzle outlet is further shaped to form at least the upper portion of said stream with a substantially collimated spray pattern. 6. The irrigation sprinkler nozzle of claim 1 wherein said nozzle outlet further includes means formed generally at an upstream side thereof for laterally converging water flowing through said nozzle outlet to produce a generally vertically oriented fan spray pattern. 7. The irrigation sprinkler nozzle of claim 6 wherein each of said ramps has an upstream end disposed at least a short distance downstream relative to initial convergence of water by said converging means. 8. The irrigation sprinkler nozzle of claim 1 wherein said nozzle outlet further includes laterally converging tapered transition surfaces formed generally at an upstream side thereof, and at opposite sides of said nozzle outlet, for laterally converging water flowing through said nozzle outlet to produce a generally vertically oriented fan spray pattern. 9. The irrigation sprinkler nozzle of claim 8 wherein each of said ramps has an upstream end disposed at least a distance downstream from an upstream end of said laterally converging tapered transition surfaces. 10. The irrigation sprinkler nozzle of claim 1 wherein said nozzle outlet has a generally tombstone-shaped configuration wherein the upper margin is arched, the side margins are generally straight, and said lower margin is generally straight. 11. The irrigation sprinkler nozzle of claim 10 wherein said side margins further include laterally converging tapered transition surfaces formed generally at an upstream side thereof, and at opposite sides of said nozzle outlet to extend over a lower region thereof, for laterally converging water flowing through said nozzle outlet to produce said generally vertically oriented spray pattern, each of said ramps having an upstream end disposed a distance downstream from an upstream end of said laterally converging tapered transition surfaces. 12. An irrigation sprinkler nozzle for discharging a stream of fluid, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water stream to irrigate surrounding terrain, the water stream including an upper stream segment to irrigate a terrain zone disposed a first distance from the sprinkler nozzle and a lower stream segment to irrigate terrain disposed a second distance from the sprinkler nozzle, the first distance being greater than the second distance;said nozzle outlet including a lower margin, and having an outboard side defining a front face plane; anda plurality of discrete ramps formed at said lower margin of said nozzle outlet and extending forwardly and angularly downwardly therefrom each with a different declination angle than an adjacent ramp and arranged in a side-by-side array along said lower margin of said nozzle outlet such that a sidewall is formed between at least a pair of adjacent ramps, each of said ramps having an upstream end disposed upstream relative to said front face plane of said nozzle outlet and sharing a common upstream plane with adjacent ramps and a downstream end sharing a common downstream plane with adjacent ramps, whereby a portion of the water passing through said nozzle outlet is forced and guided downwardly generally along said ramps to form at least part of the lower stream segment to irrigate surrounding terrain relatively close to the sprinkler nozzle. 13. The irrigation sprinkler nozzle of claim 12 wherein said plurality of ramps comprises at least three of said ramps. 14. The irrigation sprinkler nozzle of claim 12 wherein said ramps are arranged in a side-by-side array spanning substantially the entire width of said lower margin of said nozzle outlet. 15. The irrigation sprinkler nozzle of claim 12 wherein said nozzle outlet is further shaped to form at least the upper portion of said stream with a substantially collimated spray pattern. 16. The irrigation sprinkler nozzle of claim 12 wherein said nozzle outlet further includes laterally converging tapered transition surfaces formed generally at an upstream side thereof, and at opposite sides of said nozzle outlet, for laterally converging water flowing through said nozzle outlet to produce said generally vertically oriented fan spray pattern, each of said ramps having an upstream end disposed a distance downstream from an upstream end of said laterally converging tapered transition surfaces. 17. The irrigation sprinkler nozzle of claim 12 wherein said nozzle outlet has a generally tombstone-shaped configuration defining an arched upper margin joined to a pair of generally straight side margins, said side margins being joined in turn to said lower margin which is also generally straight. 18. The irrigation sprinkler nozzle of claim 12 wherein the nozzle outlet includes an upper margin and a pair of side margins connecting the upper and lower margins, the upper margin, side margins and lower margin surrounding the nozzle outlet at the front face plane and the upper and side margins being free of said ramps. 19. An irrigation sprinkler nozzle for discharging a stream of fluid, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water stream to irrigate surrounding terrain, the water stream including an upper stream segment to irrigate a terrain zone disposed a first distance from the sprinkler nozzle and a lower stream segment to irrigate terrain disposed a second distance from the sprinkler nozzle, the first distance being greater than the second distance;said nozzle outlet said nozzle outlet further including laterally converging tapered transition surfaces formed generally at an upstream side thereof and at opposite sides of said nozzle outlet for laterally converging water flowing through said nozzle outlet to form at least a lower portion of said stream with a generally vertically oriented fan shaped spray pattern;said nozzle outlet including a lower margin, and having an outboard side defining a front face plane; anda plurality of discrete ramps formed at said lower margin of said nozzle outlet and extending forwardly and angularly downwardly therefrom each such discrete ramp having a different declination angle from an adjacent ramp and arranged in a side-by-side array along said lower margin of said nozzle outlet such that a sidewall is formed between adjacent ramps, each of said ramps having an upstream end disposed a distance upstream relative to said front face plane of said nozzle outlet and sharing a common upstream plane with adjacent ramps and a downstream end a distance downstream from an upstream end of said laterally converging tapered transition surfaces and sharing a common downstream plane with adjacent ramps, whereby a portion of the water passing through said nozzle outlet is forced and guided downwardly generally along said ramps to form at least part of the lower stream segment to irrigate surrounding terrain relatively close to the sprinkler nozzle. 20. The irrigation sprinkler nozzle of claim 19 wherein said plurality of ramps comprises at least three of said ramps. 21. The irrigation sprinkler nozzle of claim 19 wherein said ramps are arranged in a side-by-side array spanning substantially the entire width of said lower margin of said nozzle outlet. 22. The irrigation sprinkler nozzle of claim 19 wherein said nozzle outlet is further shaped to form at least the upper portion of said stream with a substantially collimated spray pattern. 23. The irrigation sprinkler nozzle of claim 19 wherein said nozzle outlet has a generally tombstone-shaped configuration defining an arched upper margin joined to a pair of generally straight side margins, said side margins being joined in turn to said lower margin which is also generally straight. 24. The irrigation sprinkler nozzle of claim 19 wherein the nozzle outlet includes an upper margin and a pair of side margins connecting the upper and lower margins, the upper margin, side margins and lower margin surrounding the nozzle outlet at the front face plane and the upper and side margins being free of said ramps. 25. An irrigation sprinkler nozzle, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water stream to irrigate surrounding terrain,said nozzle outlet including a lower margin, and having an outboard side defining a front face, said nozzle outlet having a generally tombstone-shaped configuration defining an arched upper margin joined to a pair of generally straight side margins, said side margins being joined in turn to said lower margin which is also generally straight; anda plurality of discrete ramps formed at said lower margin of said nozzle outlet and extending forwardly and angularly downwardly therefrom, each such discrete ramp having a different selected declination angle than an adjacent ramp and arranged in a side-by-side array along said lower margin of said nozzle outlet such that a sidewall is formed between adjacent ramps, each of said ramps having an upstream end disposed a distance upstream relative to said front face of said nozzle outlet, whereby a portion of the water passing through said nozzle outlet is guided downwardly generally along said ramps to irrigate surrounding terrain relatively close to the sprinkler nozzle. 26. The irrigation sprinkler nozzle of claim 25 wherein said side margins further include laterally converging tapered transition surfaces formed generally at an upstream side thereof, and at opposite sides of said nozzle outlet to extend over a lower region thereof, for laterally converging water flowing through said nozzle outlet to produce said generally vertically oriented spray pattern, each of said ramps having an upstream end disposed a distance downstream from an upstream end of said laterally converging tapered transition surfaces. 27. An irrigation sprinkler nozzle, comprising: a nozzle body defining a nozzle passage having an upstream end for mounting in flow communication with a supply of water under pressure, and a downstream end defining a nozzle outlet for outward projection of a water stream to irrigate surrounding terrain,said nozzle outlet including a lower margin;a faceplate generally at said downstream end of said nozzle passage, said faceplate having said nozzle outlet formed therein; anda plurality of discrete ramps formed at said lower margin of said nozzle outlet and extending forwardly and angularly downwardly therefrom, each such discrete ramp having a different selected declination angle than an adjacent ramp and arranged in a side-by-side array along said lower margin of said nozzle outlet such that a sidewall is formed between adjacent ramps, each of said ramps having an upstream end disposed a distance upstream relative to said front face of said nozzle outlet, whereby a portion of the water passing through said nozzle outlet is guided downwardly generally along said ramps to irrigate surrounding terrain relatively close to the sprinkler nozzle, a segment of the nozzle outlet at the faceplate being free of the ramps.
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