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US2621078A - Spray nozzle tip - Google Patents

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Publication number
US2621078A
US2621078A US8128849A US2621078A US 2621078 A US2621078 A US 2621078A US 8128849 A US8128849 A US 8128849A US 2621078 A US2621078 A US 2621078A
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Prior art keywords
groove
end
nozzle
orifice
bottom
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Fred W Wahlin
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Spraying Systems Co
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Spraying Systems Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet

Description

ec- 9, 1 F. w. WAHLIN 2,521,078

SPRAY NOZZLE TIP Filed March 14, 1949 INVEN TOR.

Eec fl wail? 5 m m m 62%,?

Patented Dec. 9, 1952 SPRAY NOZZLE TIP Fred'W. Wahlin, Oak Park, 111., assignor toSpray- .in Systems 00., Bellwood, 111., a corporation of Illinois Application March 14, 1949, Serial No.181,'288

Claims.

relates to I spray nozzles and has r'eierence more particularly to a construction of the outer end or tip portion thereof which improves the spray pattern andfacilitates manumention relates are made with orifices of various sizesandshapes depending upon the capacity and pattern of spray required for the particular purpose for which the nozzle is intended to be used. Generally, the pattern of the spray depends upon theshape of the orifice through which the spray is discharged, and these orifices, especially where the orifice is small,;o ot only need to bamad wit a i h d re of p cisi u a protected against any subsequent damage as any inaccuracy or alteration of, the spray orifice greatly aiTects the pattern of the spray produced h -v V. e.

To protect the orifice against damage it has beena commonpractice to recess the orifice in the, discharge end or tip of the nozzle so that portions of the nozzle body project sufiiciently beyond the outer end of the orifice to minimize exposure thereof to accidentalinjury. For this purpose many nozzles have a conical recess in the outer end with the nozzle orifice at the bottom of the recess. r V r For many purposes, nozzles are made with an elongated orifice, that is, with the exit narrow relatively to its length, to' produce a wide fiat spray and such nozzles have been made heretofore with a deep V-shaped notch extending across the nozzle end and at the bottom cutting through the rounded or dome shaped outer end of a passage, through which the fluid, usually liquid, i supplied .from the interior of the nozzle to thesp'ray'orifice. I p r o I 'In such nozzles, however, the emerging liquid has a tendency to hug the opposite sides of the the narrowness of the notch atthe orifice, there is not .sufiicientclearance between the issuing stream and the sides of the notch'at that location so that the air which entersfromthe two endsof the notch can flow freely between the issuing stream and the side walls of the notch in the'imm'ediate vicinity of the orifice, and accordingly the aspiration effect of the stream necessarily produces a low pressure area-atopposite sides of the issuing stream which, together with thedirection of movement'ot theair in the groove, tends to cause or influence the issuing stream to hug the side walls of the V-notch asthestreamleaves the orifice. v is Myinvention is particularly applicable to nozzles of the above mentioned type which have the orifice at the bottom of a transverse notch or groove and seeks to improve the spray produced uch n zz e a i s r mal i= iormitythereof to the orifice through which it is d s h e,

Other objects of my invention are, to provide abrupt edges along the opposite sides of the orifice so that the spray stream leaves cleanly therefrom to provide ample air flow to the opposite sides of the issuing stream and avoid any low pressure area there which might affect the accuracy of the stream; to increase the volumeof air supply to the base of the issuingstream; and to facilitate the manufacture of nozzles of grooved or notched end type-these, and other objects being accomplished as more iully; pointed out hereinafter and as shown in the accompanying drawing, in which: to V :Fig. 1 is a side view of a nozzle made in accordance withmy invention;

v-sh'apedlnotch sufiiciently to afiect the accuracy. of thespray pattern. hu ging efiect is believed to bedue, to some extent at least, to the 'as'pirating'efiect of the emerging liquid which tends to impart move-- ment to'the surrounding air in the direction of movement of the spray with the result that air isf drawn; in throughthe v-shaped notch from each outer end thereof toward the emerging liquid: e

As the direction of this entering air is directly jagainst the edge portions of the emerging fiat s'tream, it has a tendency to broaden the stream crosswise of thenotch. Moreover, due to Fig. 2 is an end view of the nozzle of Fig. 1 lookat the: discharge endthereof H o Fig.3is a longitudinal sectionalview of. the nozzle taken on the line 3-3 of Fig. 1; r

Fig. 4 is an enlarged fragmentary sectional view 'on the line 4 -4 of Fig. 2 of the nozzle tip; Fig. 5 is a view similar to Fig. 4 showings.- modified form of orifice, I

Referring to the drawing, the nozzle illustrated therein is composed of a body '10 having a large cylindrical opening H therethrough, a flat sided nozzle tip I2 which is made as a separate part and secured to the outer end of the body ID, a strainer l3 in the cylindrical opening ll of the body and having an annular flange 14 at the outer end thereof interposed between the nozzletip l2 and the outer end of the body [0, and a clamping member 15 by which the nozzle tip I2 is secured tothe body 10.

The body In is internally threaded at I6 at its end remote from the tip I2 for connection to a pipe or other means through which liquid is supplied to the nozzle and the other end of the body is externally threaded at I! for threaded connection therewith of the clamping member l which is of collar nut type with the outer end of the collar turned in as at |5a to engage over an annular flange I 8 at the base of the nozzle tip for clamping the latter against the outer end of the strainer I3 and the strainer flange [4 against the outer end of the nozzle body. The clamping member [5 and body [0 each have a portion of the length thereof of external hexagonal form as indicated at l9 and respectively, or of other suitable form for wrench engagement for conveniently securing the parts together.

The illustrated strainer I3 has a hollow cylindrical body 2| surrounded by a cylindrical screen 22 which is secured thereon by a screw 23 which is threaded into the lower end of the strainer body 2| and has a large head against which the lower end of the screen 22 abuts. The strainer body 2! has a series of transverse slots 24 through its wall, preferably at several places therearound, for example at diametrically opposed sides thereof, so that liquid introduced through the lower end of the nozzle passes through the screen into the interior of the strainer body 2|, and the body 2| in the vicinity of said slots preferably is turned down to a size smaller than the interior of the screen 22 but with annular screen contacting ribs 25 left at suitable intervals, so as to allow free flow of liquid through a considerable area of the screen to the slots 24.

The nozzle tip [2 has a bored out cavity 26 communicating with the interior of the strainer body 2| and leadin to a relatively small diameter bore or passage 21 with rounded or dome shaped outer end 28 through which the spray orifice 29 is formed.

This orifice 29 is recessed in the end of the nozzle at the bottom of a channel or groove 30 which extends across the nozzle end, the bottom of said channel or groove 39 being slightly beyond the dome shaped top 28 so as to leave only a thin wall of stock through which the orifice 29 extends.

An important feature of the present invention is that the channel or groove 30 is of rounded or other suitable form so that the bottom thereof, where the orifice 29 extends therethrough is relatively flat, thereby providing the orifice 28 with lateral margins 3| which are abrupt and with the channel or groove 30 widened out appreciably at the opposite sidesof the orifice directly at the orifice 29 as shown particularly in Fig. 4.

This construction also facilitates the production of the orifice 29 as the groove 30 may be first cut across the end of the nozzle, with a rotary milling cutter, for example, of appropriate edge shape after which a V-edged rotary milling cutter may be plunged into the bottom of the groove 30 in parallel relation to the groove 30 and a sufiicient distance to provide a small V-groove 32 of suitable depth at the center to cut through the dome shaped top 28 of the bore 21 and provide an orifice 29 of desired size and shape.

Because of the rounded or dome shape 28 of the outer end of the bore 21, the V-shaped cutter forms a long narrow orifice extending lengthwise of the groove 39 and it will be understood 4 that the size and shape of this orifice may be varied by changing the curvature or shape of the dome shaped end 28 of the bore 21 by changing the taper of the edge of the V-shaped cutter and also by changing the diameter of that cutter.

Obviously the precision of the groove or channel 30 is not as important as the precision of the orifice 29 and because of the shallow cut 32 required in making the orifice 29 in the manner explained above there is little strain or wear on the V-shaped cutter and a very high degree of precision is maintained throughout a large number of operations.

Moreover, the shape of the orifice may also be varied by constructing the orifice forming cutter of composite shapes. For example, by employing a flat sided cutter with V-edge and plunging the cutter a sufficient distance into the bottom of the groove or channel 30 an orifice may be formed as shown at 29a in Fig. 5 with the sides 2% of the orifice substantially parallel midway of the length of the orifice and tapered as at 290 at the opposite ends.

With a channel 30 formed as above, the angularity of the corners 3! at the opposite sides of the orifice are sufficiently close to degrees so that the stream of liquid 33 (see Fig. 4) leaves the orifice 29 cleanly without any tendency to hug the side walls of the channel or groove 30, the latter being widened out at the lateral margins of the orifice 29 so perceptibly and to such extent that the air drawn in from each end of the groove or channel 39 by the aspirating effect of said stream 33 is free to flow along the channel or groove 39 into the spaces 34 at each side of the stream 33 and counteract any low pressure effect which might otherwise occur there and interfere with the accuracy of the stream discharge from the orifice.

Obviously the orifice 29 and channel 3!] arrangement above described may be employed with any nozzle construction whether the tip portion l2 thereof is made as a separate part as herein described or as an integral part of the nozzle body and it is to be understood that my above described improvements in the tip portion of the nozzle are not limited to the particular type of nozzle shown and described herein but may be employed with any construction of nozzle to which they are applicable. Also other changes or modifications may be made without departing from the spirit of the invention, the scope of which is to be determined by the appended claims.

What is claimed is:

1. A spray nozzle having a relatively large groove extending directly across the discharge end of the nozzle from side to side thereof and opening at its opposite ends through said sides. said groove being closed at its bottom by a wall which extends from end to end thereof and is formed in its top face with a relatively small groove of substantially less width than said large groove and extending lengthwise of said large groove mid-way between the sides thereof, said nozzle having a chamber therein which leads directly toward the bottom of the small groove and is closed at its end by said wall, said wall having an intermediate portion of said small groove extending therethrough and intersecting said closed end of the chamber crosswise and providing at the intersection a spray orifice which is encircled by a portion of said bottom wall and affords direct communication from the chamber to and into the bottom of the small groove in a direction upwardly toward the top of the small groove.

2. A spray nozzle having a relatively large groove extending directly across the discharge end of the nozzle from side to side thereof and opening at its opposite ends through said sides, said groove being closed at its bottom by a wall which extends from end to end thereof and is formedin its top face with a relatively small groove of substantially less width than said large groove and extending lengthwise of said large groove midway between the sides thereof, said nozzle having a chamber therein which leads directly toward the bottom of the small groove and is closed at its end by said wall, said wall having an intermediate portion of said small groove extending therethrough and intersecting said closed end of the chamber crosswise and providing at the intersection a spray orifice which is encircled by a portion of said bottom wall and afiords direct communication from the chamber to and into the bottom of the small groove in a direction upwardly toward the top of the small groove, and provides the only communicability from the chamber to the small groove.

3. A spray nozzle having a relatively large groove extending directly across the discharge end of the nozzle from side to side thereof and opening at its opposite ends through saidsides, said groove being closed at its bottom by a wall which is formed in its top face with a relatively small groove of substantially less width than said large groove and extending lengthwise of said large groove midway between the sides thereof, said nozzle having a chamber therein with a passageway of circular cross section leading outwardly therefrom directly toward the bottom of the small groove and terminating in a convexly rounded substantially hemispherical end with a portion of said bottom wall interposed between said end and said small groove, said wall portion having an opening therethrough which affords direct communication from the outer end of the passageway to and into the bottom of the small groove in a direction lengthwise of said passageway and directly toward the top of the small groove.

4. A spray nozzle having a relatively large groove extending directly across the discharge end of the nozzle from side to side thereof and opening at its opposite ends through said sides, said groove being closed at its bottom by a wall which is formed in its top face with a relatively small groove of substantially less width than said large groove and extending lengthwise of said large groove midway between the sides thereof, said nozzle having a chamber therein with a passageway leading outward therefrom directly toward the bottom of the small groove and terminating in a convexly rounded substantially 6 hemispherical end with a portion of said bottom wall interposed between said end and said small groove, said small groove being disposed to extend in the direction of its length across the convexly rounded end of said passageway in a position to intersect said end, and said bottom wall portion having at the place of intersection of the groove and passageway end an opening therethrough through which the groove and passageway intercommunicate directly into one another.

5. A spray nozzle having a body with a chamber therein and a removable tip detachably se-' cured to the body and closing the chamber at one end, said tip being a single member having a portion thereof projecting outwardly from the nozzle body and provided with a relatively large groove extending directly across the outer end of the outwardly projecting portion from one side thereof to the other side thereof and opening at its opposite ends through said sides, said groove being closed at the bottom by a wall which is formed in its top face with a relatively small groove of substantially less width than the large groove and extending lengthwise of said large groove midway between the sides thereof, said member having a circular passageway therein which opens at one end into said chamber and extends outwardly from said chamber toward the bottom of said small groove and terminates in a convexly rounded substantially hemispherical end with a portion of said large groove bottom wall interposed between said convexly rounded end and said small groove, said small groove being disposed to extend in the direction of the length across the convexly rounded end of said passageway in a position to intersect said end, and said bottom wall portion having at the place of such intersecting of the groove and passageway an opening therethrough through which the groove and passageway intercommunicate directly with one another, said passageway and said opening conjointly providing the only communicability from the chamber to the small groove.

FRED W. WAI-IHN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,051,069 Bohme Jan. 21, 1913 1,151,258 Fischer Aug. 24, 1915 1,531,877 Reimers Mar. 31, 1925 1,569,448 Banner Jan. 12, 1926 1,950,796 Hilgerink Mar. 13, 1934 2,116,863 Dinley May 10, 1938 FOREIGN PATENTS Number Country Date 479,677 Great Britain Feb. 9, 1938 809,727 France Mar. 9, 1937

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683627A (en) * 1952-08-25 1954-07-13 Spraying Systems Co Spray nozzle with rearwardly extending airways
US2722458A (en) * 1952-06-02 1955-11-01 Spraying Systems Co Nozzles of flat spray type
US2743138A (en) * 1952-05-31 1956-04-24 Spraying Systems Co Spray nozzle with side vented discharge end
US2774631A (en) * 1952-06-11 1956-12-18 Spraying Systems Co Two-part orifice spray nozzle and method of making same
US2778688A (en) * 1953-04-08 1957-01-22 Hanson Equipment Company Spraying apparatus
DE1063535B (en) * 1952-12-19 1959-08-13 Hugo Tafelmaier Atomizing nozzle and Fraeserscheibe for producing the Zerstaeuberschlitzes in Duesenkoerper
US2985386A (en) * 1958-07-18 1961-05-23 William F Steinen Spray nozzle
US3045932A (en) * 1959-06-22 1962-07-24 William F Steinen Spray nozzle
US3054563A (en) * 1959-07-29 1962-09-18 William F Steinen Flat spray atomizing nozzle
DE1289956B (en) * 1961-09-13 1969-02-27 Concast Ag Sekundaerkuehlvorrichtung for gradflaechige continuous cast products
US3754710A (en) * 1971-08-07 1973-08-28 Inouye Shokai & Co Ltd K K Nozzle tip of a spray gun of the airless type
JPS5056658U (en) * 1973-09-22 1975-05-28
DE2732314A1 (en) * 1976-07-19 1978-01-26 Nordson Corp Airless spray nozzle and process for their preparation
US4084271A (en) * 1977-01-12 1978-04-18 Ginsberg Irwin L Steam bath device for shower
DE2724173A1 (en) * 1977-05-27 1978-11-30 Speck Kolbenpumpen Fabrik Jet and process for their manufacture
US4401271A (en) * 1981-07-10 1983-08-30 Minnesota Mining And Manufacturing Company Aerosal fan spray head
NL8802655A (en) * 1988-10-28 1990-05-16 Empas B V Device for weeks or decontaminating interior spaces, such as stables.
US5639025A (en) * 1995-07-07 1997-06-17 The Procter & Gamble Company High Viscosity pump sprayer utilizing fan spray nozzle
US5642860A (en) * 1995-07-07 1997-07-01 The Procter & Gamble Company Pump sprayer for viscous or solids laden liquids
US5788160A (en) * 1996-07-17 1998-08-04 Woog; Gunter Steam atomizer attachment for shower
US5890655A (en) * 1997-01-06 1999-04-06 The Procter & Gamble Company Fan spray nozzles having elastomeric dome-shaped tips
US20070221762A1 (en) * 2006-03-24 2007-09-27 Micheli Paul R Spray device having removable hard coated tip
WO2008008189A1 (en) * 2006-07-10 2008-01-17 Illinois Tool Works Inc. System and method of uniform spray coating
EP2476874A1 (en) * 2011-01-13 2012-07-18 Delphi Technologies Holding S.à.r.l. Injection Device for Reagent
US20180043376A1 (en) * 2015-03-06 2018-02-15 Vitaly Ivanovich TITOROV Device for Spraying Pressurized Material

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1051069A (en) * 1911-10-21 1913-01-21 Carl Boehme Oil-burner tip.
US1151258A (en) * 1911-01-12 1915-08-24 Schutte & Koerting Co Oil-burner.
US1531877A (en) * 1923-12-20 1925-03-31 W N Best Corp Oil burner
US1569448A (en) * 1924-05-19 1926-01-12 Falk Corp Fuel-injection nozzle for oil engines
US1950796A (en) * 1933-04-03 1934-03-13 Frank M Hilgerink Cleaning nozzle
FR809727A (en) * 1936-08-25 1937-03-09 Jet to make liquid spraying on plants, particularly for insecticides and fungicides
GB479677A (en) * 1936-10-13 1938-02-09 Bosch Robert Improvements in or relating to spray nozzles
US2116863A (en) * 1937-05-05 1938-05-10 Solvent Machine Company Spray and jet nozzle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1151258A (en) * 1911-01-12 1915-08-24 Schutte & Koerting Co Oil-burner.
US1051069A (en) * 1911-10-21 1913-01-21 Carl Boehme Oil-burner tip.
US1531877A (en) * 1923-12-20 1925-03-31 W N Best Corp Oil burner
US1569448A (en) * 1924-05-19 1926-01-12 Falk Corp Fuel-injection nozzle for oil engines
US1950796A (en) * 1933-04-03 1934-03-13 Frank M Hilgerink Cleaning nozzle
FR809727A (en) * 1936-08-25 1937-03-09 Jet to make liquid spraying on plants, particularly for insecticides and fungicides
GB479677A (en) * 1936-10-13 1938-02-09 Bosch Robert Improvements in or relating to spray nozzles
US2116863A (en) * 1937-05-05 1938-05-10 Solvent Machine Company Spray and jet nozzle

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743138A (en) * 1952-05-31 1956-04-24 Spraying Systems Co Spray nozzle with side vented discharge end
US2722458A (en) * 1952-06-02 1955-11-01 Spraying Systems Co Nozzles of flat spray type
US2774631A (en) * 1952-06-11 1956-12-18 Spraying Systems Co Two-part orifice spray nozzle and method of making same
US2683627A (en) * 1952-08-25 1954-07-13 Spraying Systems Co Spray nozzle with rearwardly extending airways
DE1063535B (en) * 1952-12-19 1959-08-13 Hugo Tafelmaier Atomizing nozzle and Fraeserscheibe for producing the Zerstaeuberschlitzes in Duesenkoerper
US2778688A (en) * 1953-04-08 1957-01-22 Hanson Equipment Company Spraying apparatus
US2985386A (en) * 1958-07-18 1961-05-23 William F Steinen Spray nozzle
US3045932A (en) * 1959-06-22 1962-07-24 William F Steinen Spray nozzle
US3054563A (en) * 1959-07-29 1962-09-18 William F Steinen Flat spray atomizing nozzle
DE1289956B (en) * 1961-09-13 1969-02-27 Concast Ag Sekundaerkuehlvorrichtung for gradflaechige continuous cast products
US3754710A (en) * 1971-08-07 1973-08-28 Inouye Shokai & Co Ltd K K Nozzle tip of a spray gun of the airless type
JPS5056658U (en) * 1973-09-22 1975-05-28
JPS548124Y2 (en) * 1973-09-22 1979-04-14
DE2732314A1 (en) * 1976-07-19 1978-01-26 Nordson Corp Airless spray nozzle and process for their preparation
US4346849A (en) * 1976-07-19 1982-08-31 Nordson Corporation Airless spray nozzle and method of making it
US4084271A (en) * 1977-01-12 1978-04-18 Ginsberg Irwin L Steam bath device for shower
DE2724173A1 (en) * 1977-05-27 1978-11-30 Speck Kolbenpumpen Fabrik Jet and process for their manufacture
US4401271A (en) * 1981-07-10 1983-08-30 Minnesota Mining And Manufacturing Company Aerosal fan spray head
NL8802655A (en) * 1988-10-28 1990-05-16 Empas B V Device for weeks or decontaminating interior spaces, such as stables.
US5639025A (en) * 1995-07-07 1997-06-17 The Procter & Gamble Company High Viscosity pump sprayer utilizing fan spray nozzle
US5642860A (en) * 1995-07-07 1997-07-01 The Procter & Gamble Company Pump sprayer for viscous or solids laden liquids
US5788160A (en) * 1996-07-17 1998-08-04 Woog; Gunter Steam atomizer attachment for shower
US5890655A (en) * 1997-01-06 1999-04-06 The Procter & Gamble Company Fan spray nozzles having elastomeric dome-shaped tips
US20070221762A1 (en) * 2006-03-24 2007-09-27 Micheli Paul R Spray device having removable hard coated tip
US8684281B2 (en) 2006-03-24 2014-04-01 Finishing Brands Holdings Inc. Spray device having removable hard coated tip
WO2008008189A1 (en) * 2006-07-10 2008-01-17 Illinois Tool Works Inc. System and method of uniform spray coating
US20080017734A1 (en) * 2006-07-10 2008-01-24 Micheli Paul R System and method of uniform spray coating
EP2476874A1 (en) * 2011-01-13 2012-07-18 Delphi Technologies Holding S.à.r.l. Injection Device for Reagent
WO2012095450A1 (en) * 2011-01-13 2012-07-19 Delphi Technologies Holding S.À.R.L. Injection device for reagent
US9310010B2 (en) 2011-01-13 2016-04-12 Delphi International Operations Luxembourg S.A.R.L. Injection device for reagent
US20180043376A1 (en) * 2015-03-06 2018-02-15 Vitaly Ivanovich TITOROV Device for Spraying Pressurized Material

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