EP0216043A1 - Dispositif pour distribuer des matériaux liquides ou pâteux - Google Patents

Dispositif pour distribuer des matériaux liquides ou pâteux Download PDF

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Publication number
EP0216043A1
EP0216043A1 EP86109511A EP86109511A EP0216043A1 EP 0216043 A1 EP0216043 A1 EP 0216043A1 EP 86109511 A EP86109511 A EP 86109511A EP 86109511 A EP86109511 A EP 86109511A EP 0216043 A1 EP0216043 A1 EP 0216043A1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
delivery chamber
nozzle
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86109511A
Other languages
German (de)
English (en)
Other versions
EP0216043B1 (fr
Inventor
Wolfang Dr.-Ing. Trautwein
Klaus Dr.-Ing. Zerweck
Peter Dr.-Ing. Konhäuser
Jürgen Dipl.-Ing. Sprenger
Heinrich Griebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wagner International AG
Wagner Finish Tech Center GmbH
Original Assignee
Wagner International AG
Wagner Finish Tech Center GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wagner International AG, Wagner Finish Tech Center GmbH filed Critical Wagner International AG
Publication of EP0216043A1 publication Critical patent/EP0216043A1/fr
Application granted granted Critical
Publication of EP0216043B1 publication Critical patent/EP0216043B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3468—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber
    • B05B1/3473—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber in response to liquid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/323—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve member being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric

Definitions

  • the invention relates to a device for the quantitative delivery of a liquid or pasty medium under pressure, such as paint, lacquer, adhesive or the like, according to the preamble of patent claim 1.
  • Devices of this type are available in large numbers on the market, for example as hand-held spray guns with built-in electric rocker arm drive and attached paint reservoir. All these known devices are operated in such a way that the pump drive is switched on, whereupon the pump begins to work and conveys the liquid or pasty medium under pressure to the dispensing nozzle. The pump drive is then switched off again at the end of the working process.
  • a major disadvantage here is that the pressure required for a proper delivery of the medium, in particular the spray pressure, is not yet present at the start of work, but rather only builds up after a few strokes of the pump device, with the result that, for example, when spraying paint at the start of the spraying phase the spraying is insufficient.
  • the object of the present invention is therefore to improve the devices of the type mentioned at the outset in such a way that the medium is only dispensed when the required dispensing pressure is present and that the throughput of the device can be changed in a comparatively large range in a simple manner.
  • the solution to this problem results from the characterizing features of patent claim 1.
  • a second valve ensures that the dispensing nozzle only opens when the required dispensing pressure is present in the delivery chamber and that the dispensing nozzle closes again when the required dispensing pressure falls below.
  • the level of the opening pressure of the second valve determines the amount of medium dispensed per unit of time, which means that by adjusting the opening pressure, the amount dispensed can be changed in a simple manner within wide limits.
  • Fig. 1 shows a longitudinal section through the essential parts for explaining the invention of a paint spray gun with built-in feed piston pump and attached paint container, the piston drive, such as an electric rocker arm drive, the pistol handle with the trigger triggering the piston drive and the electrical supply line for the piston drive are not shown.
  • the piston drive such as an electric rocker arm drive
  • the pistol handle with the trigger triggering the piston drive and the electrical supply line for the piston drive are not shown.
  • the feed pump built into this paint spray gun consists of an oscillating piston 12, a pump chamber 13 and a pump outlet valve 14.
  • the piston 12 can be set in a reciprocating motion by a drive (not mentioned), which is shown in the drawing by a double arrow is indicated.
  • the pump outlet valve 14 is pressed by a non-return spring 15 against the outlet 13a of the pump chamber 13 designed as a valve seat.
  • the paint is dispensed through a nozzle opening 19 in the form of a round jet nozzle which is molded into a nozzle plate 20.
  • the nozzle plate 20 is held by the screw cap 11 against a swirl body 21 which is rigidly arranged in the gun barrel 10 and which has a swirl chamber 21a located directly in front of the nozzle 19, which has feed channels 21b tangentially opening into it and axial feed bores 21c adjoining them with the interior the gun barrel 10 is connected.
  • This interior of the gun body 10 represents an elongated, essentially cylindrical delivery chamber 22, which establishes the delivery connection between the pump outlet valve 14 and the spray nozzle 19.
  • a second valve which essentially consists of a closing body 23 and a valve rod 24.
  • the closing body 23 has a frustoconical closing surface 23a, which rests on the outside of the nozzle plate 20, namely on the edge of the nozzle opening 19, in a sealing manner.
  • the closing body 23 is seated at one end of the valve rod 24 passing through the nozzle opening 19 and leading into the delivery chamber 22, the central part of which is guided in a central axial bore of the swirl body 21 and the other end is rigidly anchored in a spring cage 25.
  • the spring cage 25 there is an adjustable pressure adjusting screw 26, the two sides of which serve as spring abutments, namely on the one hand as an abutment for a helical spring 27 supported against the swirl body 21 and on the other hand as an abutment for the weaker check spring 15 of the pump outlet valve 14 already mentioned.
  • the spring cage 25 and thus the piston rod 24 rigidly connected to it are thus held “floating" in the feed chamber 22 by the two springs 15 and 27, the springs being designed so that when the feed chamber 22 is empty, the stronger spring 27 the feed basket 25 so loaded that the conical surface 23a of the closing body 23 firmly is pressed against the nozzle plate 20.
  • a bore 28 opens into the delivery chamber 22 and can be connected to the paint container 18 via a throttle valve 29 with a transverse bore 30 and a return line 31.
  • the arrangement is such that there is no connection between the bore 28 and the transverse bore 30 in the position shown in the figure, but such a connection, however, results in an adjustable manner by screwing the throttle valve 29 downward.
  • the paint spray gun works as follows. In the idle state, the gun is in the state shown in the drawing, ie the valves 14 and 23, 24 are closed. For commissioning, the operator now actuates the pistol trigger (not shown), with the result that the piston drive, which is also not shown, comes into action and causes the piston 12 to move back and forth, for example at twice the mains frequency. The piston 12 releases the suction slot 16 during its first backward stroke (suction stroke) and thereby generates such a negative pressure in the pump chamber 13 that 17 paint is drawn from the paint reservoir 18 via the suction line.
  • a major advantage of the invention is that the second valve 23, 24 opens only when the predetermined opening pressure is exceeded and closes again immediately when this opening pressure is undershot, so that the pressure required for perfect atomization of the paint is always available during the spraying process thus, incomplete atomization does not occur either at the start of the spraying process or at the end of the spraying process, and the known and feared initial and final drops are thus completely avoided are.
  • the inadvertent sucking in of air by the feed pump cannot lead to a deterioration of the spray pattern.
  • Another important advantage of the invention results from the fact that the delivery rate can be changed within very wide limits without having to accept deterioration of the atomization and without the risk of clogging the nozzle or the swirl chamber bores during breaks.
  • the first way to change the amount of ink delivered is to - known - adjust the maximum stroke that the piston travels.
  • the second possibility according to the invention of changing the ink throughput quantity consists in correspondingly adjusting the force ratio between the two springs 15 and 27 by turning the adjusting screw 26.
  • FIGS. 2 and 2A An embodiment modified from the throttle valve 29 of FIG. 1 is shown in FIGS. 2 and 2A, the same parts being provided with the same reference numerals with the parts in FIG. 1, namely the delivery chamber 22, the overflow bore 28 and the ink reservoir 18 However, in contrast to FIG. 1, the overflow bore 28 is led vertically into the ink reservoir 18.
  • the overflow quantity can be regulated by a rotary slide valve 40 passing through the bore 28 and having a notch 41, as can best be seen from FIG. 2A.
  • the rotational position of this notch 41 allows the amount of overflow to be adjusted from zero to a maximum value.
  • the rotational position of the notch 41 is adjusted by means of an adjustment knob 42 which is rotatably mounted on the outside of a casing 43 of the pump housing and by being pressed in against the force of one Spring 44 can be brought into non-rotatable engagement with the rotary slide 40.
  • an adjustment knob 42 By turning the adjustment knob 42, the rotational position of the rotary slide 40 and consequently the amount of paint throughput can thus be conveniently adjusted from the outside.
  • a scale will be attached to the outside of the covering 43, roughly corresponding to that in FIG. 2A, in order to make it easier for the operator to set the ink throughput quantity.
  • the rotary slide valve of FIG. 2 can also be inserted into a transverse bore penetrating through the bore 28. It is also possible to let the overflow bore 28 leave the pump chamber 13, specifically from a location close to the outlet valve 14.
  • the overflow opening can also be a simple, non-adjustable throttle bore, even if the achievable ink throughput range is smaller than in the case of the overflow hole described with setting option.
  • FIG. 3 differs from that of FIG. 1 only in that the swirl body 21 is replaced by a guide body 50, in which the valve rod 24 slides, which has a feed chamber 50a and axial bores 50b opening into it.
  • Fig. 4 shows an embodiment which differs from those described so far in that the nozzle 19 is not a round nozzle but a slot nozzle (flat jet nozzle) and in particular that the second valve is not an external valve but an internal valve.
  • the internal valve is to be understood to mean that the closing body of the second valve, here designated 60, is located within the delivery chamber 22, directly in front of the nozzle plate 20.
  • the closing body 60 has the shape of a valve attached to the front end of the valve rod 24. comparatively thick, circular disk-shaped plate which has on its free surface a central recess representing a feed chamber and feed channels 60b leading radially from the plate edge to the feed chamber 60a.
  • the front region of the valve rod 24 and the closing body plate 60 are slidably guided in a guide body 61, which is fastened to the gun tube 10 and has a projecting ring rim 61a.
  • the ring rim 61a of the guide body 61 covers the radial bores 60b of the closing body 60, so that the paint in the delivery chamber 22 does fill the space 62 between the guide body 61 and the wall of the gun barrel 10 , but cannot get to the feed chamber 60a and thus to the nozzle opening 19.
  • the open position of the second valve 24, 60 i.e.
  • the closing body 60 rests on the back of the nozzle plate 20, and its radial channels 60b protrude beyond the ring edge 61a of the guide body 60, so that the color in the space 62 is characterized by the Radial channels 60b can flow into the feed chamber 60a and to the nozzle opening 19.
  • Fig. 5 shows an embodiment of the invention which corresponds essentially to that of Fig. 4, but applied to an omnidirectional nozzle.
  • the feed chamber 60a of the closing body 60 is a swirl chamber 4
  • the feed channels 60b which open radially into the chamber 60a in the exemplary embodiment according to FIG. 4 are formed here in FIG. 5 as channels tangentially opening into the chamber 60a.
  • the operation of the valve 24, 60 of FIG. 5 corresponds to that of the valve of FIG. 4.
  • Fig. 6 shows an embodiment which differs from that of Fig. 5 essentially in that the closing body of the second valve is combined with the nozzle plate to form a one-piece component 70, which is a hollow body with a central inner supply chamber 70a, in which Feed chamber 70a opens tangentially feed channels 70b.
  • the opening and closing operation corresponds entirely to that of the embodiment of Fig. 5, i.e. the supply channels 70b are covered in the retracted valve position by the ring edge 61a of the guide body 61, whereas these channels 70b are free in the advanced valve position.
  • This assembly of the closing body and nozzle plate means, however, that the nozzle plate - in contrast to all other exemplary embodiments shown here - is movable, that is to say it is slidably mounted in the mouth of the gun barrel 10.
  • FIG. 7 shows an embodiment with an internal valve, the guide body 21 with feed channels 21c, which is slidably penetrated by the piston rod 24, having a large central opening in which a swirl body 80 is slidably accommodated.
  • the swirl body 80 which also serves as the closing body, has feed channels 80a and is located at the end of the piston rod 24, and is therefore displaceable with the latter. It is essential in this embodiment that the channels 21c of the guide body 21 and the channels 80a of the swirl body 80 are offset from one another. For example, if there are three channels 21c, 80a in the guide body 21 and in the swirl body 80, the channels 80a are offset in relation to the channels 21c in each case 60 °.
  • Fig. 8 shows an embodiment with an inner valve, in which the valve differs significantly from the valve arrangements previously explained.
  • the second valve consists of an elastic sealing ring 90 attached to the nozzle plate 20, the function of which is to close or release the tangential feed channels 21b of the swirl body 21.
  • the elasticity of the sealing ring 90 is dimensioned such that it maintains its shape up to a certain pressure, namely the opening pressure of the valve and thereby covers the channels 21b, but then when the pressure in the delivery chamber 22 rises above the opening pressure is dented so that the channels 21b are released;
  • the closing and opening shape of the sealing ring 90 are indicated in the drawing.
  • the illustrated embodiments of the design of the second valve in spray guns can experience numerous modifications.
  • the embodiments with an internal valve drawn with a round jet nozzle can also be used for flat jet nozzles, and furthermore, exchange options between embodiments with swirl bodies and without swirl bodies are also possible.
  • FIG. 9 shows an embodiment of the invention applied to a dispensing device for paste-like masses, that is to say a device in which the dispensing medium is not atomized.
  • a screw cap 100 is screwed onto the gun tube 10, which at the same time represents a nozzle plate for the dispensing nozzle 19.
  • a valve plate 101 On the front edge of the gun barrel 10 is a valve plate 101, which is held by the screw cap 100.
  • the valve plate has a central valve opening 102.
  • a second valve is accommodated in the delivery chamber 22, the structure of which corresponds to that of the spray gun of FIG.
  • the second valve thus consists of a closing body 23 resting on the outside on the valve plate 101, a valve rod 24, a spring cage 25 with adjusting nut 26 and a valve spring 27.
  • the functioning of the valve can be understood from the preceding explanations, ie when a certain pressure value in has been reached the delivery chamber 22, the unit consisting of spring cage 25, valve rod 24 and closing body 23 is shifted to the left against the force of the spring 27, so that the closing body 23 lifts off the valve plate 101 and releases an annular passage of the pasty mass to the discharge opening 19. If the pressure in the delivery chamber 22 drops below the opening pressure value again, the valve is immediately closed again by the spring 27.
  • FIG. 9 in contrast to FIG. 1, the pump chamber and its outlet valve are not shown, because in this exemplary embodiment according to FIG. 9 it is assumed that the feed pump is not installed directly in the dispensing gun but is arranged away from it, with the pump outlet then and delivery chamber 22 are connected to one another, for example, by a hose line.
  • the overflow or throttle opening can then be provided in or on the feed pump, but this device is of somewhat less importance with pasty masses than with liquids, because pasty masses have a certain compressibility.
  • the operating state of the nozzle (open or closed) can be monitored reliably and with little effort by monitoring the material pressure in the conveying chamber 22 by means of a pressure sensor 103.
  • the feed pump is also built directly into the dispensing gun in a device according to FIG. 9 1-8 can also be used in feed pumps in which the dispensing gun is arranged at a distance, as can the exemplary embodiments according to FIGS. 1-8.
  • the essence of the invention is that in addition to the outlet valve of an oscillating feed pump, a second valve is arranged on or in the region of the discharge nozzle, which can be actuated by the pressure prevailing in the space between the pump outlet valve and the second valve, the opening pressure of the second valve is higher than that of the pump outlet valve. How high the opening pressure of the second valve is above that of the pump outlet valve depends on a number of factors of the respective application, including the desired delivery quantity per unit of time; however, it can be said that the opening pressure of the second valve should be at least twice the opening pressure of the pump outlet valve.

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EP86109511A 1985-08-21 1986-07-11 Dispositif pour distribuer des matériaux liquides ou pâteux Expired EP0216043B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853529909 DE3529909A1 (de) 1985-08-21 1985-08-21 Vorrichtung zum abgeben eines fluessigen oder pastoesen mediums
DE3529909 1985-08-21

Publications (2)

Publication Number Publication Date
EP0216043A1 true EP0216043A1 (fr) 1987-04-01
EP0216043B1 EP0216043B1 (fr) 1989-10-11

Family

ID=6279018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109511A Expired EP0216043B1 (fr) 1985-08-21 1986-07-11 Dispositif pour distribuer des matériaux liquides ou pâteux

Country Status (8)

Country Link
US (1) US4735362A (fr)
EP (1) EP0216043B1 (fr)
JP (1) JPS6245368A (fr)
KR (1) KR870001874A (fr)
AU (1) AU582266B2 (fr)
BR (1) BR8603974A (fr)
DE (1) DE3529909A1 (fr)
HU (1) HUT48136A (fr)

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US5395051A (en) * 1994-04-18 1995-03-07 Wagner Spray Tech Corporation Twin tube locking assembly
US5740964A (en) * 1994-05-16 1998-04-21 Par-Way Group Hand held spray dispenser with adjustable pressure delivery system and rotating nozzle
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US5842638A (en) * 1997-06-18 1998-12-01 Wagner Spray Tech Corporation Flanged swirl valve with relieved elastomer seal
EP1059122A1 (fr) * 1999-06-07 2000-12-13 The Procter & Gamble Company Appareil de pulvérisation comprenant une buse à jet plat
US20070131720A1 (en) * 2003-10-29 2007-06-14 Akzo Nobel N.V. Processes and apparatuses for dosing a medicament or other viscous substance
US7845409B2 (en) * 2005-12-28 2010-12-07 3M Innovative Properties Company Low density proppant particles and use thereof
US8267332B1 (en) 2008-07-14 2012-09-18 Wagner Spray Tech Corporation Hand held paint sprayer with paint cup and reversible tip
EP2865449B1 (fr) * 2008-10-22 2019-04-03 Graco Minnesota Inc. Pulvérisateur sans air portable
WO2011062992A1 (fr) * 2009-11-17 2011-05-26 Black & Decker Inc. Mécanisme à libération rapide pour pistolet à peinture
US8550376B2 (en) * 2009-11-17 2013-10-08 Black & Decker Inc. Paint sprayer
US8413911B2 (en) * 2009-11-17 2013-04-09 Black & Decker Inc. Paint sprayer
US9180472B2 (en) * 2009-11-17 2015-11-10 Black & Decker Inc. Paint sprayer
US8740111B2 (en) * 2009-11-17 2014-06-03 Black & Decker Inc. Paint sprayer
US8651402B2 (en) * 2009-11-17 2014-02-18 Black & Decker Inc. Adjustable nozzle tip for paint sprayer
WO2020243438A1 (fr) 2019-05-31 2020-12-03 Graco Minnesota Inc. Pulvérisateur de fluide portatif
DE102021208336A1 (de) * 2021-08-02 2023-02-02 Lechler Gmbh Flachstrahldüse

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Also Published As

Publication number Publication date
BR8603974A (pt) 1987-03-31
AU6163686A (en) 1987-02-26
KR870001874A (ko) 1987-03-28
HUT48136A (en) 1989-05-29
DE3529909A1 (de) 1987-03-05
AU582266B2 (en) 1989-03-16
EP0216043B1 (fr) 1989-10-11
US4735362A (en) 1988-04-05
JPS6245368A (ja) 1987-02-27

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