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US3584786A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluid dispersion nozzle

Assignee: PATENT AND DEV OF NORTH CAROLI
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Filing: 1968-12-30
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Granted: 1971-06-15
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Expires: 1988-12-30
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Abstract

Abstract A single element fluid dispersion nozzle for achieving unusually fine atomization of liquids and a wide angle flat-fan dispersion of both liquids and gases uniformly and over a wide range of capacity and pressure. These features, heretofore unavailable commercially in a single element, have been achieved in practice by a unique design that: (1) minimizes the diameter of the orifice aperture down to about 0.001 inch, (2) maximizes the dispersion angle up to at least 180*, (3) assures a uniformly curved corona orifice cavity at its outer extremity, (4) allows extensible lengths with multiple apertures therein and, (5) provides equipressure among apertures. The long tubelike structure has a main feed cavity with at least one fluidly connected corona orifice cavity extending outwardly therefrom. The inner edge of a section thru the corona orifice cavity would be an arc, approximating a circle, having a diameter as minute as 0.001 inch. The simplicity of this structure and the unique and easily varied relationship of the cavities, in combination with the technique of intersection to produce minimum orifice areas and maximum dispersion angles results in outstanding improvements in performance, manufacturing and economy.

Inventors

  • 👤 William H Johnson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 19:58
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/14; B05B1/20; B05B1/02; B05B1/04

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 75 words
A fluid dispersion nozzle comprising a relatively large elongated fluid feed conduit and a smaller elongated discharge orifice portion communicating with the interior of said conduit including an elongated wall portion having a uniform semicylindrical internal curvature substantially semicircular in cross section forming a corona orifice cavity slitted transversely to provide an orifice for fan-shaped fluid dispersion, said orifice cavity being unslitted on either side of said orifice for a distance greater than its diameter.
Claim 2
Dependent Claim 75 words
A fluid dispersion nozzle comprising a relatively large elongated fluid feed conduit and a smaller elongated discharge orifice portion communicating with the interior of said conduit including an elongated wall portion having a uniform semicylindrical internal curvature substantially semicircular in cross section forming a corona orifice cavity slitted transversely to provide an orifice for fan-shaped fluid dispersion, said orifice cavity being unslitted on either side of said orifice for a distance greater than its diameter.
Claim 3
Dependent Claim 207 words
A single element fluid dispersion nozzle for achieving a wide range of degree of atomization including unusually fine atomization of liquids, uniform dispersion of both liquids and gases over a wide range of capacity and pressure, and a wide flat-fan dispersion angle; comprising a single tubelike structure in that its internal walls are generated by a line, moving about a fixed lengthwise central line on varying radii, whose longitudinal dimension is long in relation to the other dimensions, and in manufacture is extensible; said tubelike structure having a main feed cavity, longitudinally disposed, of large cross-sectional area in comparison with the total free cross-sectional area of the said tubelike member such that the major portion of fluid flows unrestrictedly through the said main feed cavity, the main feed cavity having at least one fluidly connected corona discharge wing extending outwardly and forming a corona orifice cavity in section, the inner edge of the said corona orifice cavity being an arc approximating a semicircle having a small diameter to minimize area of the aperture and maximize atomization, said orifice cavity being slitted transversely to form an orifice, said orifice cavity being unslitted on either side of said orifice for a distance greater than the diameter of said semicircle.
Claim 4
Dependent Claim 207 words
A single element fluid dispersion nozzle for achieving a wide range of degree of atomization including unusually fine atomization of liquids, uniform dispersion of both liquids and gases over a wide range of capacity and pressure, and a wide flat-fan dispersion angle; comprising a single tubelike structure in that its internal walls are generated by a line, moving about a fixed lengthwise central line on varying radii, whose longitudinal dimension is long in relation to the other dimensions, and in manufacture is extensible; said tubelike structure having a main feed cavity, longitudinally disposed, of large cross-sectional area in comparison with the total free cross-sectional area of the said tubelike member such that the major portion of fluid flows unrestrictedly through the said main feed cavity, the main feed cavity having at least one fluidly connected corona discharge wing extending outwardly and forming a corona orifice cavity in section, the inner edge of the said corona orifice cavity being an arc approximating a semicircle having a small diameter to minimize area of the aperture and maximize atomization, said orifice cavity being slitted transversely to form an orifice, said orifice cavity being unslitted on either side of said orifice for a distance greater than the diameter of said semicircle.
Claim 5
Dependent Claim 232 words
A single element fluid dispersion nozzle for achieving a wide range of degree of atomization including unusually fine atomization of liquids, uniform dispersion of both liquids and gases over a wide range of capacity and pressure and a wide flat-fan dispersion angle; comprising a single tubelike structure in that its internal walls are generated by a line, moving about a fixed lengthwise central line on varying radii, whose longitudinal dimension is long in relation to the other dimensions, and in manufacture is extensible; said tubelike structure having a main feed cavity, of large cross-sectional area in comparison with the total free cross-sectional area of the said tubelike member such that the major portion of fluid flows unrestrictedly through the said main feed cavity, the main feed cavity having at least one fluidly connected corona discharge wing extending outwardly and forming a corona orifice cavity in section, the inner edge of the said corona orifice cavity being an arc approximating a semicircle having a small diameter to minimize area of the aperture and maximize atomization; said inner edge of the corona orifice cavity having an included angle of about 150* to about 190*, and said corona orifice cavity having at least one orifice formed by the transverse intersection of a surface slit; said orifice cavity being unslitted on either side of said orifice for a distance greater than the diameter of said semicircle.
Claim 6
Dependent Claim 232 words
A single element fluid dispersion nozzle for achieving a wide range of degree of atomization including unusually fine atomization of liquids, uniform dispersion of both liquids and gases over a wide range of capacity and pressure and a wide flat-fan dispersion angle; comprising a single tubelike structure in that its internal walls are generated by a line, moving about a fixed lengthwise central line on varying radii, whose longitudinal dimension is long in relation to the other dimensions, and in manufacture is extensible; said tubelike structure having a main feed cavity, of large cross-sectional area in comparison with the total free cross-sectional area of the said tubelike member such that the major portion of fluid flows unrestrictedly through the said main feed cavity, the main feed cavity having at least one fluidly connected corona discharge wing extending outwardly and forming a corona orifice cavity in section, the inner edge of the said corona orifice cavity being an arc approximating a semicircle having a small diameter to minimize area of the aperture and maximize atomization; said inner edge of the corona orifice cavity having an included angle of about 150* to about 190*, and said corona orifice cavity having at least one orifice formed by the transverse intersection of a surface slit; said orifice cavity being unslitted on either side of said orifice for a distance greater than the diameter of said semicircle.
Claim 7
Dependent Claim 78 words
A fluid dispensing nozzle comprising an elongated main fluid feed conduit having a relatively large cross-sectional area, a corona discharge wing member of less cross-sectional area than the main fluid conduit extending substantially parallel with the main fluid conduit and communicating with the interior thereof, said wing portion including at least one corona orifice cavity having a smooth inner wall surface of substantially semicircular cross section and having a narrow transverse slit formed therein providing a discharge orifice.
Claim 8
Dependent Claim 78 words
A fluid dispensing nozzle comprising an elongated main fluid feed conduit having a relatively large cross-sectional area, a corona discharge wing member of less cross-sectional area than the main fluid conduit extending substantially parallel with the main fluid conduit and communicating with the interior thereof, said wing portion including at least one corona orifice cavity having a smooth inner wall surface of substantially semicircular cross section and having a narrow transverse slit formed therein providing a discharge orifice.
Claim 9
Dependent Claim 22 words
A fluid dispensing nozzle as set forth in claim 4, wherein the wing member is provided with a plurality of transverse slits.
Claim 10
Dependent Claim 36 words
A fluid dispensing nozzle as set forth in claim 4, wherein a plurality of wing members are provided each connecting with the main fluid conduit and each including a discharge orifice as defined in claim 4.
Claim 11
Dependent Claim 62 words
A fluid dispensing nozzle comprising an elongated main fluid conduit, a hollow discharge ring surrounding the main conduit and communicating with the interior thereof, said ring having a corona orifice cavity, the interior of said ring at said orifice cavity being semicircular in cross section, and a transverse slit at said corona orifice cavity to provide an orifice for discharge of fluid.
Claim 12
Dependent Claim 62 words
A fluid dispensing nozzle comprising an elongated main fluid conduit, a hollow discharge ring surrounding the main conduit and communicating with the interior thereof, said ring having a corona orifice cavity, the interior of said ring at said orifice cavity being semicircular in cross section, and a transverse slit at said corona orifice cavity to provide an orifice for discharge of fluid.

References Cited (Backward Citations)

US1005431A Cited
US2780492A Cited
US2718712A Cited
US2976794A Cited
US3262460A Cited
US3401888A Cited
US3447756A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-06-14 1974-12-14 1975-06-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-14 1978-12-14 1979-06-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-14 1982-12-14 1983-06-15 $7700.00 Window Closed / Lapsed

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