US3848807A - Confining nozzle for spray gun - Google Patents

Confining nozzle for spray gun Download PDF

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Publication number
US3848807A
US3848807A US42320273A US3848807A US 3848807 A US3848807 A US 3848807A US 42320273 A US42320273 A US 42320273A US 3848807 A US3848807 A US 3848807A
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stream
air
fluid
nozzle
housing
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P Partida
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P Partida
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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
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0075Nozzle arrangements in gas streams

Abstract

A nozzle for a spray gun for paint and the like utilizes a novel secondary air stream which combines with the pressurized fluid outlet nozzle action and a primary atomizing air outlet to not only produce a vortex action of the spray but to confine it to a definitely limited area thus preventing excessive splashing, waste of fluid and covering of areas which it is not desired to cover.

Description

United States Patent [191 Partida [451 Nov. 19, 1974 1 CONFINING NOZZLE FOR SPRAY GUN [76] Inventor: Pedro Partida, 335A 10th St., San

Francisco, Calif. 94103 [22] Filed: Dec. 10, 1973 21 Appl. No.: 423,202

[52] U.S. Cl 239/290, 239/296, 239/422 [51] Int. Cl B05b 1/28 [58] Field of Search 239/294, 295, 296, 297, 239/290, 422, 423

[56] References Cited UNITED STATES PATENTS 1,608,833 ll/1926 Birkenmaier et a1. 239/297 1,786,394 12/1930 Tracy 239/296 2,787,497 4/1957 Kough 239/290 Binoche 239/296 Watkins 239/422 Primary Examiner-Lloyd L. King Attorney, Agent, or Firm-Alfons Puishes [5 7 ABSTRACT A nozzle for a spray gun for paint and the like utilizes a novel secondary air stream which combines with the pressurized fluid outlet nozzle action and a primary atomizing air outlet to not only produce a vortex action of the spray but to confine it to a definitely limited area thus preventing excessive splashing, waste of fluid and covering of areas which it is not desired to 4 Claims, 2 Drawing Figures CONFINING NOZZLE FOR SPRAY GUN BACKGROUND OF THE INVENTION Of course, the utilization to air pressure and air atomization to effect spraying of paint and the like is an old art. Numerous nozzles have been constructed to increase the efficiency and effectiveness of this process. Those known to the applicant at the time of this writing are set forth briefly below.

Heinrich US. Pat. No. 1,438,239 teaches the use of a crater-like or cup shaped nozzle which mixes with a secondary concentric air supply to give improved atomization of the fluid which is fed through the center of the nozzle.

Parker US. Pat. No. 1,463,332 uses a wing-shaped auxiliary nozzle which supplies an air stream directed at the emitting fluid stream to create a flared type of jet and simulate a flat brush action.

Bartling US. Pat. No. 1,539,536 also uses a wing type of auxiliary jet for air to combine with the main spray jet and produce an improved brush effect.

Johnston US. Pat. No. 1,974,538 teaches the use of an air actuated rotary central member in a nozzle which produces a very high degree of atomization approaching that of fog and is adapted especially for the spraying of insecticides.

Starkey US. Pat. No. 2,942,790 utilizes a series of skewed or tangentially oriented passages circumferentially spaced around a central nozzle opening to create a turbulent spray for viscous fluids. It is especially adapted for heavy oil, such as that used in oil burners.

Swan US. Pat. No. 3,082,960 utilizes a rotatable vaned rotor positioned in the liquid stream which likewise produces a high degree of dispersal or atomization and is especially adapted for use in devices such as fire hose nozzles.

I am not aware at this time of any device or nozzle which is especially adapted to confine and atomize a stream of fluid such as paint to a given predetermined area to prevent wastage and disfiguration of adjacent areas other than the area it is desired to cover.

SUMMARY OF THE INVENTION I have discovered that by the use of the nozzle of my invention I am able to confine an atomized stream of fluid such as paint to a given limited area and prevent its spreading out beyond that area.

I provide first a nozzle connected to a source of fluid spray, such as paint, under pressure and disposed to eject said stream upon an exterior surface.

I next provide a primary air outlet which combines with the fluid stream to effect its atomization or division into fine particles.

I then provide a secondary air outlet concentric with the other two outlets which act as a confining means or shield to prevent the paint or other fluid from flying or being ejected beyond the screen so produced.

By the use of my invention I have found that I am able to prevent great wastage of fluid such as expensive paints and also to prevent covering areas adjacent to that which it is desired to cover unnecessarily and thus eliminating the need for excessive cleaning up afterwards.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a preferred embodiment of the nozzle of my invention takenalong the lines l1 of FIG. 2.

FIG. 2 is an end view looking into the nozzle outlets of my invention.

DESCRIPTION OF A PREFERRED EMBODIMENT Referring now to the Figures, there is seen the body or housing of the nozzle of my invention 1 which is equipped with a projecting member 2 and a hub 3.

Hub 3 is equipped with an internal threaded section 4 which is adapted for screwing on the end of a suitable spray gun which in turn is connected to an air supply as is well known to those skilled in the art.

Air inlet 5 connects to the internal cone air supply member 6 of my nozzle.

An inlet for paint or other fluid is provided at 7 which may be connected to a source of paint under pressure by means of threaded section 8. This may be a hose connection which goes to a pressurized cannister and is controlled insofar as flow is concerned by an operating gun also in a manner known to those skilled in the art, but which is not shown.

A press fit section 9 in projecting member 2 is disposed to receive an internal pipe member 10 which leads to an orifice or outlet 11 positioned in the center of nozzle body 1. This orifice or nozzle may be a simple flared hole or may comprise other configurations which have been used for ejection of the fluid.

In casing outlet nozzle 1 l I provide a semi-cylindrical baffie 12 positioned concentric with outlet nozzle 11.

My conical member 6 mentioned above in effect comprises two concentric cones as shown which in turn provide two separate conduits for air flow.

Thus I provide a primary air flow emanating from air inlet 5 and exiting around cylindrical baffle 12 as seen at 13.

I provide also a secondary air outlet from cone member 6 concentric with but enclosing or encompassing the primary air outlet 13 and the fluid spray outlet 15.

The combined action of the two latter air outlets and baffle 12 upon fluid spray outlet 15 is to produce a vortex 16 and the further action of my air outlets and particularly the secondary air 14 is to prevent the spray vortex 16 from penetrating outside of the area enclosed by the stream 14.

My combination of fluid and air streams aided by the special configuration of my cone member and semicylindrical baffle combine to produce the unusual effect of confining my atomized spray of fluid to a given predetermined and selected area which of course may be varied by varying the air pressures supplied by the spray gun (not shown).

I claim:

l. A nozzle for a fluid spray gun comprising:

a housing of generally hollow cylindrical configuration having an open end;

an orifice positioned concentrically within said housing and disposed for emission of a stream of fluid out of the open end of said housing;

means for connecting said orifice to a source of fluid under pressure;

a conical air supply member positioned concentrically within said housing; means for connecting said air supply member to the outlet of an air spray gun; said member comprising two separate concentric conical air conduits disposed for emitting a first inner air stream and a second outer air stream axially through said open end of housing, said streams being concentric with each other and having a generally circular cross-sectional configuration; said first inner air stream being disposed to impinge upon said fluid stream thereby effecting atomization of said fluid stream; said second outer stream being disposed to produce an air screen around said first stream thereby con- 4. The nozzle of claim 2 including means for varying

Claims (4)

1. A nozzle for a fluid spray gun comprising: a housing of generally hollow cylindrical configuration having an open end; an orifice positioned concentrically within said housing and disposed for emission of a stream of fluid out of the open end of said housing; means for connecting said orifice to a source of fluid under pressure; a conical air supply member positioned concentrically within said housing; means for connecting said air supply member to the outlet of an air spray gun; said member comprising two separate concentric conical air conduits disposed for emitting a first inner air stream and a second outer air stream axially through said open end of housing, said streams being concentric with each other and having a generally circular cross-sectional configuration; said first inner air stream being disposed to impinge upon said fluid stream thereby effecting atomization of said fluid stream; said second outer stream being disposed to produce an air screen around said first stream thereby confining said first stream to a predetermined area.
2. The nozzle of claim including a semi-cylindrical baffle positioned concentrically within said housing and having its open end facing in the direction of the open end of said housing; said baffle being further positioned behind said orifice and within the flow of said first air stream, whereby the combined action of said baffle and said air streaM produces a vortex action upon said atomized fluid stream.
3. The nozzle of claim 2 including means for varying the pressure of the air supply to said conical member.
4. The nozzle of claim 2 including means for varying the flow of fluid to said orifice.
US42320273 1973-12-10 1973-12-10 Confining nozzle for spray gun Expired - Lifetime US3848807A (en)

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092043A2 (en) * 1982-04-19 1983-10-26 Wagner International Ag Electrostatic spraying device
US4414252A (en) * 1980-11-24 1983-11-08 Photon Power, Inc. Spray forming thin films
EP0108153A1 (en) * 1982-04-28 1984-05-16 Tokyo Road Engineering Co., Ltd. Method and device for injecting high pressure water for facility or the like on roadside
US4527507A (en) * 1983-07-13 1985-07-09 Honda Giken Kogyo Kabushiki Kaisha Spray apparatus for applying a sharp-edged pattern of coating
US4674682A (en) * 1984-11-26 1987-06-23 Bejaco Ab Method of mixing an atomized liquid into a gas flow and a device for carrying out said method
EP0308524A1 (en) * 1987-09-22 1989-03-29 Vortran Medical Technology, Inc. Inhalation device and method
WO1989007886A1 (en) * 1988-03-02 1989-09-08 Dems Engineering I/S An apparatus with at least one liquid nozzle for spraying liquid on planted fields
US4972830A (en) * 1985-07-31 1990-11-27 Vortran Medical Technology, Inc. Inhalation device and method
US5088648A (en) * 1989-07-19 1992-02-18 Sata-Farbspritztechnik Gmbh & Co. Nozzle head for a paint spray gun
US5228809A (en) * 1989-01-27 1993-07-20 Kajima Corporation Consolidating agent injecting apparatus and injecting apparatus for improving ground
US5435297A (en) * 1991-08-29 1995-07-25 Christoph Klein Medical device for inhaling metered aerosols
DE29510159U1 (en) * 1995-06-22 1995-09-14 Franke Herbert Device for planting blowable media via a hose or pipe conveyor system in cavities to be filled, in particular wall and ceiling cavities
US5452856A (en) * 1993-12-10 1995-09-26 Davidson Textron, Inc. Spray wand with spray fan control
US6056213A (en) * 1998-01-30 2000-05-02 3M Innovative Properties Company Modular system for atomizing a liquid
US6357669B1 (en) * 1999-12-22 2002-03-19 Visteon Global Tech., Inc. Nozzle
US7341630B1 (en) 2003-06-26 2008-03-11 Advanced Cardiovascular Systems, Inc. Stent coating system
US20100294858A1 (en) * 2009-05-20 2010-11-25 Benjamin Campbell Steinhaus Methods and systems for mixing reactor feed
US20100316966A1 (en) * 2009-06-16 2010-12-16 Boettcher Andreas Burner arrangement for a combustion system for combusting liquid fuels and method for operating such a burner arrangement
US20110068201A1 (en) * 2008-05-13 2011-03-24 Tix Joseph E Build-up minimizing spray gun tip
US20110174901A1 (en) * 2008-10-29 2011-07-21 Peter Dettlaff Gravity cup for a paint sprayer
USD740393S1 (en) 2013-09-27 2015-10-06 Sata Gmbh & Co. Kg Paint spray gun
US9327301B2 (en) 2008-03-12 2016-05-03 Jeffrey D. Fox Disposable spray gun cartridge
USD758537S1 (en) 2014-07-31 2016-06-07 Sata Gmbh & Co. Kg Paint spray gun rear portion
US9409197B2 (en) 2013-12-18 2016-08-09 Sata Gmbh & Co. Kg Air nozzle closure for a spray gun
USD768820S1 (en) 2014-09-03 2016-10-11 Sata Gmbh & Co. Kg Paint spray gun with pattern
USD770593S1 (en) 2014-07-31 2016-11-01 Sata Gmbh & Co. Kg Paint spray gun
US9533317B2 (en) 2009-07-08 2017-01-03 Sata Gmbh & Co. Kg Paint spray gun
WO2017059405A1 (en) * 2015-10-02 2017-04-06 Spraying Systems Co. Pressurized air assisted full cone spray nozzle assembly
US9782784B2 (en) 2010-05-28 2017-10-10 Sata Gmbh & Co. Kg Nozzle head for a spray device
US9782785B2 (en) 2010-12-02 2017-10-10 Sata Gmbh & Co. Kg Spray gun and accessories
US9878336B2 (en) 2006-12-05 2018-01-30 Sata Gmbh & Co. Kg Fluid reservoir for a paint spray gun
US10189037B2 (en) 2011-06-30 2019-01-29 Sata Gmbh & Co. Kg Easy-to-clean spray gun, accessories therefor, and mounting and dismounting methods
US10464076B2 (en) 2015-12-21 2019-11-05 Sata Gmbh & Co. Kg Air cap and nozzle assembly for a spray gun, and spray gun
US10471449B2 (en) 2016-08-19 2019-11-12 Sata Gmbh & Co. Kg Air cap arrangement and spray gun

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1608833A (en) * 1921-08-19 1926-11-30 Matthews W N Corp Method of and apparatus for applying coatings
US1786394A (en) * 1929-01-10 1930-12-23 Vilbiss Co Air brush
US2787497A (en) * 1953-12-24 1957-04-02 Coast Metals Inc Multi-tip torch for applying hard facing material
US3463395A (en) * 1966-01-06 1969-08-26 S K V Sa Spray gun nozzle heads
US3702175A (en) * 1970-12-04 1972-11-07 Avco Corp Flat spray fuel nozzle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1608833A (en) * 1921-08-19 1926-11-30 Matthews W N Corp Method of and apparatus for applying coatings
US1786394A (en) * 1929-01-10 1930-12-23 Vilbiss Co Air brush
US2787497A (en) * 1953-12-24 1957-04-02 Coast Metals Inc Multi-tip torch for applying hard facing material
US3463395A (en) * 1966-01-06 1969-08-26 S K V Sa Spray gun nozzle heads
US3702175A (en) * 1970-12-04 1972-11-07 Avco Corp Flat spray fuel nozzle

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414252A (en) * 1980-11-24 1983-11-08 Photon Power, Inc. Spray forming thin films
US4572437A (en) * 1982-04-19 1986-02-25 J. Wagner Ag Electrostatic spraying apparatus
EP0092043A3 (en) * 1982-04-19 1985-01-23 Wagner International Ag Electrostatic spraying device
EP0092043A2 (en) * 1982-04-19 1983-10-26 Wagner International Ag Electrostatic spraying device
EP0108153A1 (en) * 1982-04-28 1984-05-16 Tokyo Road Engineering Co., Ltd. Method and device for injecting high pressure water for facility or the like on roadside
EP0108153A4 (en) * 1982-04-28 1985-09-25 Tokyo Road Eng Method and device for injecting high pressure water for facility or the like on roadside.
US4527507A (en) * 1983-07-13 1985-07-09 Honda Giken Kogyo Kabushiki Kaisha Spray apparatus for applying a sharp-edged pattern of coating
US4674682A (en) * 1984-11-26 1987-06-23 Bejaco Ab Method of mixing an atomized liquid into a gas flow and a device for carrying out said method
US4972830A (en) * 1985-07-31 1990-11-27 Vortran Medical Technology, Inc. Inhalation device and method
EP0308524A1 (en) * 1987-09-22 1989-03-29 Vortran Medical Technology, Inc. Inhalation device and method
WO1989007886A1 (en) * 1988-03-02 1989-09-08 Dems Engineering I/S An apparatus with at least one liquid nozzle for spraying liquid on planted fields
US5228809A (en) * 1989-01-27 1993-07-20 Kajima Corporation Consolidating agent injecting apparatus and injecting apparatus for improving ground
US5088648A (en) * 1989-07-19 1992-02-18 Sata-Farbspritztechnik Gmbh & Co. Nozzle head for a paint spray gun
US5435297A (en) * 1991-08-29 1995-07-25 Christoph Klein Medical device for inhaling metered aerosols
US5452856A (en) * 1993-12-10 1995-09-26 Davidson Textron, Inc. Spray wand with spray fan control
DE29510159U1 (en) * 1995-06-22 1995-09-14 Franke Herbert Device for planting blowable media via a hose or pipe conveyor system in cavities to be filled, in particular wall and ceiling cavities
US6056213A (en) * 1998-01-30 2000-05-02 3M Innovative Properties Company Modular system for atomizing a liquid
US6357669B1 (en) * 1999-12-22 2002-03-19 Visteon Global Tech., Inc. Nozzle
US8282024B2 (en) * 2003-06-26 2012-10-09 Advanced Cardiovascular Systems, Inc. Stent coating nozzle assembly
US20080121175A1 (en) * 2003-06-26 2008-05-29 Stephen Dirk Pacetti Stent Coating Nozzle Assembly
US20080124451A1 (en) * 2003-06-26 2008-05-29 Stephen Dirk Pacetti Stent Coating Method
US7341630B1 (en) 2003-06-26 2008-03-11 Advanced Cardiovascular Systems, Inc. Stent coating system
US7871658B2 (en) 2003-06-26 2011-01-18 Advanced Cardiovascular Systems, Inc. Stent coating method
US9878336B2 (en) 2006-12-05 2018-01-30 Sata Gmbh & Co. Kg Fluid reservoir for a paint spray gun
US9327301B2 (en) 2008-03-12 2016-05-03 Jeffrey D. Fox Disposable spray gun cartridge
US20110068201A1 (en) * 2008-05-13 2011-03-24 Tix Joseph E Build-up minimizing spray gun tip
US20110174901A1 (en) * 2008-10-29 2011-07-21 Peter Dettlaff Gravity cup for a paint sprayer
US8925836B2 (en) 2008-10-29 2015-01-06 Sata Gmbh & Co. Kg Gravity cup for a paint sprayer
US20100294858A1 (en) * 2009-05-20 2010-11-25 Benjamin Campbell Steinhaus Methods and systems for mixing reactor feed
US8783585B2 (en) * 2009-05-20 2014-07-22 General Electric Company Methods and systems for mixing reactor feed
US20100316966A1 (en) * 2009-06-16 2010-12-16 Boettcher Andreas Burner arrangement for a combustion system for combusting liquid fuels and method for operating such a burner arrangement
US9533317B2 (en) 2009-07-08 2017-01-03 Sata Gmbh & Co. Kg Paint spray gun
US9782784B2 (en) 2010-05-28 2017-10-10 Sata Gmbh & Co. Kg Nozzle head for a spray device
US9782785B2 (en) 2010-12-02 2017-10-10 Sata Gmbh & Co. Kg Spray gun and accessories
US10189037B2 (en) 2011-06-30 2019-01-29 Sata Gmbh & Co. Kg Easy-to-clean spray gun, accessories therefor, and mounting and dismounting methods
USD740393S1 (en) 2013-09-27 2015-10-06 Sata Gmbh & Co. Kg Paint spray gun
US9409197B2 (en) 2013-12-18 2016-08-09 Sata Gmbh & Co. Kg Air nozzle closure for a spray gun
USD835235S1 (en) 2014-07-31 2018-12-04 Sata Gmbh & Co. Kg Paint spray gun
USD758537S1 (en) 2014-07-31 2016-06-07 Sata Gmbh & Co. Kg Paint spray gun rear portion
USD798419S1 (en) 2014-07-31 2017-09-26 Sata Gmbh & Co. Kg Paint spray gun
USD770593S1 (en) 2014-07-31 2016-11-01 Sata Gmbh & Co. Kg Paint spray gun
USD768820S1 (en) 2014-09-03 2016-10-11 Sata Gmbh & Co. Kg Paint spray gun with pattern
WO2017059405A1 (en) * 2015-10-02 2017-04-06 Spraying Systems Co. Pressurized air assisted full cone spray nozzle assembly
US10464076B2 (en) 2015-12-21 2019-11-05 Sata Gmbh & Co. Kg Air cap and nozzle assembly for a spray gun, and spray gun
US10471449B2 (en) 2016-08-19 2019-11-12 Sata Gmbh & Co. Kg Air cap arrangement and spray gun

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