EP1105220B1 - Electrode holder for a powder spray gun - Google Patents

Electrode holder for a powder spray gun Download PDF

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Publication number
EP1105220B1
EP1105220B1 EP99929157A EP99929157A EP1105220B1 EP 1105220 B1 EP1105220 B1 EP 1105220B1 EP 99929157 A EP99929157 A EP 99929157A EP 99929157 A EP99929157 A EP 99929157A EP 1105220 B1 EP1105220 B1 EP 1105220B1
Authority
EP
European Patent Office
Prior art keywords
spray coating
coating device
electrode holder
electrode
powder
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.)
Expired - Lifetime
Application number
EP99929157A
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German (de)
French (fr)
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EP1105220A1 (en
Inventor
Gerald Haas
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.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland 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.)
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Publication date
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Application filed by Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Priority to DE29924481U priority Critical patent/DE29924481U1/en
Publication of EP1105220A1 publication Critical patent/EP1105220A1/en
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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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes

Definitions

  • the invention relates to a Spray coating device for coating powder according to the preamble of claim 1.
  • a spray coating device of this kind is made GB 2 209 729 A is known.
  • Another Spray coating device of this kind is made of EP 0 383 030 B1. It contains one Electrode holder with one only about three millimeters long centering ring, which for centering the Electrode holder from the front to the downstream end a powder channel of the spray coating device is used.
  • the High voltage path from a high voltage generator to at least one high voltage electrode of the Powder well be shielded so that one electrostatic charging of the coating powder only from the electrode.
  • leakage currents between the high voltage conduction path and others Parts, such as the powder channel undesirable, because they mean a loss of energy and as well an unwanted electrostatic charge the Powder particles in the powder channel may result which in turn leads to powder deposits in the Pulverkanal and in special cases to a "hiking" lead powder dust along the Kriechstromweges can.
  • the greater the material thickness of electrical insulating material between the high voltage line parts and the powder channel is the better is the electrical insulation.
  • One such Enlargement of the material thickness is the wish contrary, the spray coater as possible small and with low weight.
  • the object of the invention is to be achieved electrical leakage currents and unwanted electromagnetic fields between high voltage conductors and coating powder in the powder channel of To avoid spray coating device without it becomes necessary, the spray coater bigger and / or harder to train.
  • the spray coating device shown in FIG according to the invention includes a one-piece housing. 2 made of electrically insulating material, which has a Handle 4 and a run 6 forms. Through the housing 2 extends a powder channel 8, which by a Handle tube piece 10 and a barrel tube piece 12 formed which is at an angle of less than 180 ° according to the angle between the handle 4 and the Run 6 are connected to each other. To the powder channel 8 is a powder hose 14 for the supply of Coating powder can be connected.
  • a housed in a chamber of the housing 2 High voltage generator 16 for generating a High voltage in the range between 10 kV and 140 kV or another voltage value is on its primary side with a fastened to the housing 2 Low voltage cable 18 and on its secondary side via an electrical conductor 20 with a High voltage electrode 22 electrically connected.
  • An electrode holder 24 forms a downstream End section of the powder channel 8.
  • the electrode holder 24 has a pipe section 26, which in the housing. 2 is inserted from the front and flush with the Inner diameter of the barrel pipe section 12 subsequent Inside diameter has.
  • the pipe piece 26 is a one-piece body of electrically insulating Material and has a rear, upstream Pipe section 28 whose outer diameter is smaller is as a forward adjoining Pipe section 30. Between the two Pipe sections 28 and 30 is a radial shoulder 32 formed.
  • An electrical contact device 34 is at this Paragraph 32 arranged. It contains one with the High voltage conductor 20 connected electrical contact 36 and one contacted by this, at the paragraph 32nd Arranged contact 38. This electrical contact 38 is by a through the pipe section 26 extending electrical connection line 40 with the at least an electrode 22 connected.
  • the axial distance between the electrical Contact device 34 and the rear end 42 of the rear pipe section 28 is at least 1.5 cm, preferably at most 4 cm, and is according to preferred embodiment between 2.0 and 3.0 cm, consequently, preferably at about 2.5 cm.
  • the tip of the electrode 22 protrudes a few millimeters out the air duct 48 and is upstream near a spray nozzle opening 52.
  • the Electrode 22 containing end portion of the air channel 48th is through a pipe section 54 of the electrode holder 24th formed, which extends from a web 56 axially to extends in front.
  • the web 56 extends diametrically through the pipe section 26, which in the housing 2 of is inserted in the front.
  • Electrode holder 24 All parts of the electrode holder 24 are made together from a one-piece body of electric insulating material, eg. B. plastic.
  • an exchangeable body which is between one Nozzle body 58 of the spray nozzle opening 52 and the housing 2 is arranged interchangeably.
  • To exchange the Electrode holder 24 only needs one Union nut 60 from the front end of the barrel 6 be removed so that the nozzle body 58 the Electrode holder 24 releases.
  • Pipe section 30 From the larger in outside diameter front Pipe section 30 extends with it one-piece pipe socket 62 forward, in which the Nozzle body 58 is inserted from the front.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Abstract

A spray coating device for coating powder, comprising an electrode support (24) fitted with an electrically insulating tubular segment (26) running at least 1.5 cm from an electric contactor (34) into a powder duct (8).

Description

Die Erfindung betrifft eine
Sprühbeschichtungsvorrichtung für Beschichtungspulver gemäß dem Oberbegriff von Anspruch 1.The invention relates to a
Spray coating device for coating powder according to the preamble of claim 1.

Eine Sprühbeschichtungsvorrichtung dieser Art ist aus der GB 2 209 729 A bekannt. Eine weitere Sprühbeschichtungsvorrichtung dieser Art ist aus der EP 0 383 030 B 1 bekannt. Sie enthält einen Elektrodenhalter mit einem ungefähr nur drei Millimeter langen Zentrierring, welcher zur Zentrierung des Elektrodenhalters von vorne in das stromabwärtige Ende eines Pulverkanals der Sprühbeschichtungsvorrichtung eingesetzt ist.A spray coating device of this kind is made GB 2 209 729 A is known. Another Spray coating device of this kind is made of EP 0 383 030 B1. It contains one Electrode holder with one only about three millimeters long centering ring, which for centering the Electrode holder from the front to the downstream end a powder channel of the spray coating device is used.

Damit im Pulverkanal der Sprühbeschichtungsvorrichtung keine für die Pulverförderung und die Sprühbeschichtung nachteiligen elektromagnetischen Felder oder elektromagnetischen Kräfte wirken, muß der Hochspannungsweg von einem Hochspannungserzeuger zu mindestens einer Hochspannungs-Elektrode von dem Pulverweg gut abgeschirmt werden, damit eine elektrostatische Aufladung des Beschichtungspulvers nur von der Elektrode aus erfolgt. Ferner sind Kriechströme zwischen dem Hochspannungs-Leitungsweg und anderen Teilen, beispielsweise dem Pulverkanal, unerwünscht, weil sie einen Energieverlust bedeuten und außerdem eine unerwünschte elektrostatische Aufladung der Pulverpartikel im Pulverkanal zur Folge haben können, was seinerseits wiederum zu Pulverablagerungen im Pulverkanal und in besonderen Fällen zu einem "Wandern" von Pulverstaub entlang des Kriechstromweges führen kann. Je größer die Materialdicke von elektrisch isolierendem Material zwischen den Hochspannungs-Leitungsteilen und dem Pulverkanal ist, desto besser ist die elektrische Isolierung. Einer solchen Vergrößerung der Materialdicke steht jedoch der Wunsch entgegen, die Sprühbeschichtungsvorrichtung möglichst klein und mit niedrigem Gewicht auszubilden. Thus in the powder channel of the spray coating device none for powder conveying and spray coating adverse electromagnetic fields or Electromagnetic forces must work, the High voltage path from a high voltage generator to at least one high voltage electrode of the Powder well be shielded so that one electrostatic charging of the coating powder only from the electrode. Furthermore, leakage currents between the high voltage conduction path and others Parts, such as the powder channel, undesirable, because they mean a loss of energy and as well an unwanted electrostatic charge the Powder particles in the powder channel may result which in turn leads to powder deposits in the Pulverkanal and in special cases to a "hiking" lead powder dust along the Kriechstromweges can. The greater the material thickness of electrical insulating material between the high voltage line parts and the powder channel is the better is the electrical insulation. One such Enlargement of the material thickness, however, is the wish contrary, the spray coater as possible small and with low weight.

Durch die Erfindung soll die Aufgabe gelöst werden, elektrische Kriechströme und unerwünschte elektromagnetische Felder zwischen Hochspannungsleitern und Beschichtungspulver im Pulverkanal der Sprühbeschichtungsvorrichtung zu vermeiden, ohne daß es notwendig wird, die Sprühbeschichtungsvorrichtung größer und/oder schwerer auszubilden.The object of the invention is to be achieved electrical leakage currents and unwanted electromagnetic fields between high voltage conductors and coating powder in the powder channel of To avoid spray coating device without it becomes necessary, the spray coater bigger and / or harder to train.

Diese Aufgabe wird gemäß der Erfindung durch die Merkmale von Anspruch 1 gelöst.This object is achieved according to the invention by the Characteristics of claim 1 solved.

Weitere Merkmale der Erfindung sind in den Unteransprüchen enthalten.Further features of the invention are in the Subclaims included.

Die Erfindung wird im folgenden in Bezug auf die Zeichnungen anhand einer bevorzugten Ausführungsform als Beispiel beschrieben. Diese Zeichnungen zeigen in

  • Fig. 1 einen Längsschnitt durch eine pistolenförmige Sprühbeschichtungsvorrichtung nach der Erfindung,
  • Fig. 2 eine Vorderansicht auf eine vordere Stirnseite eines Elektrodenhalters der Sprühbeschichtungsvorrichtung von Fig. 1,
  • Fig. 3 eine Rückansicht auf die hintere Stirnseite des Elektrodenhalters von Fig. 2.
    • The invention will now be described by way of example with reference to the drawings of a preferred embodiment. These drawings show in
  • 1 shows a longitudinal section through a gun-shaped spray coating device according to the invention,
  • FIG. 2 is a front view of a front end side of an electrode holder of the spray coating apparatus of FIG. 1; FIG.
  • 3 is a rear view of the rear end side of the electrode holder of FIG. 2nd

    • Die in Figur 1 gezeigte Sprühbeschichtungsvorrichtung nach der Erfindung enthält ein einstückiges Gehäuse 2 aus elektrisch isolierendem Material, welches einen Griff 4 und einen Lauf 6 bildet. Durch das Gehäuse 2 erstreckt sich ein Pulverkanal 8, welcher durch ein Griff-Rohrstück 10 und ein Lauf-Rohrstück 12 gebildet ist, die unter einem Winkel von weniger als 180° entsprechend dem Winkel zwischen dem Griff 4 und dem Lauf 6 miteinander verbunden sind. An den Pulverkanal 8 ist ein Pulverschlauch 14 für die Zufuhr von Beschichtungspulver anschließbar.The spray coating device shown in FIG according to the invention includes a one-piece housing. 2 made of electrically insulating material, which has a Handle 4 and a run 6 forms. Through the housing 2 extends a powder channel 8, which by a Handle tube piece 10 and a barrel tube piece 12 formed which is at an angle of less than 180 ° according to the angle between the handle 4 and the Run 6 are connected to each other. To the powder channel 8 is a powder hose 14 for the supply of Coating powder can be connected.

    Ein in einer Kammer des Gehäuses 2 untergebrachter Hochspannungserzeuger 16 zum Erzeugen einer Hochspannung im Bereich zwischen 10 kV und 140 kV oder einem anderen Spannungswert ist auf seiner Primärseite mit einem an dem Gehäuse 2 befestigbaren Niederspannungskabel 18 und auf seiner Sekundärseite über einen elektrischen Leiter 20 mit einer Hochspannungs-Elektrode 22 elektrisch verbindbar.A housed in a chamber of the housing 2 High voltage generator 16 for generating a High voltage in the range between 10 kV and 140 kV or another voltage value is on its primary side with a fastened to the housing 2 Low voltage cable 18 and on its secondary side via an electrical conductor 20 with a High voltage electrode 22 electrically connected.

    Ein Elektrodenhalter 24 bildet einen stromabwärtigen Endabschnitt des Pulverkanals 8. Der Elektrodenhalter 24 weist ein Rohrstück 26 auf, welches in das Gehäuse 2 von vorne eingesetzt ist und einen bündig an den Innendurchmesser des Lauf-Rohrstückes 12 anschließenden Innendurchmesser hat. Das Rohrstück 26 ist ein einstückiger Körper aus elektrisch isolierendem Material und hat einen hinteren, stromaufwärtigen Rohrstückabschnitt 28, dessen Außendurchmesser kleiner ist als ein sich nach vorne daran anschließender Rohrstückabschnitt 30. Zwischen den beiden Rohrstückabschnitten 28 und 30 ist ein radialer Absatz 32 gebildet.An electrode holder 24 forms a downstream End section of the powder channel 8. The electrode holder 24 has a pipe section 26, which in the housing. 2 is inserted from the front and flush with the Inner diameter of the barrel pipe section 12 subsequent Inside diameter has. The pipe piece 26 is a one-piece body of electrically insulating Material and has a rear, upstream Pipe section 28 whose outer diameter is smaller is as a forward adjoining Pipe section 30. Between the two Pipe sections 28 and 30 is a radial shoulder 32 formed.

    Eine elektrische Kontaktvorrichtung 34 ist an diesem Absatz 32 angeordnet. Sie enthält einen mit dem Hochspannungsleiter 20 verbundenen elektrischen Kontakt 36 und einen von diesem kontaktierten, an dem Absatz 32 angeordnteten Kontakt 38. Dieser elektrische Kontakt 38 ist durch eine sich durch das Rohrstück 26 erstreckende elektrische Verbindungsleitung 40 mit der mindestens einen Elektrode 22 verbunden.An electrical contact device 34 is at this Paragraph 32 arranged. It contains one with the High voltage conductor 20 connected electrical contact 36 and one contacted by this, at the paragraph 32nd Arranged contact 38. This electrical contact 38 is by a through the pipe section 26 extending electrical connection line 40 with the at least an electrode 22 connected.

    Der axiale Abstand zwischen der elektrischen Kontaktvorrichtung 34 und dem hinteren Ende 42 des hinteren Rohrstückabschnittes 28 beträgt mindestens 1,5 cm, vorzugsweise maximal 4 cm, und liegt gemäß bevorzugter Ausführungsform zwischen 2,0 und 3,0 cm, demzufolge vorzugsweise bei etwa 2,5 cm.The axial distance between the electrical Contact device 34 and the rear end 42 of the rear pipe section 28 is at least 1.5 cm, preferably at most 4 cm, and is according to preferred embodiment between 2.0 and 3.0 cm, consequently, preferably at about 2.5 cm.

    In dem nach hinten zeigenden Absatz 32 ist eine den Pulverkanal 8 mit radialem Abstand ringförmig umgebende Nut 44 gebildet, die einerseits mit dem vorderen Ende eines sich durch das Gehäuse 2 erstreckenden Druckluftkanals 46 in Strömungsverbindung ist und andererseits mit einem sich durch den Elektrodenhalter 24 erstreckenden Luftkanal 48 in Strömungsverbindung ist.In the rear-facing paragraph 32 is a the Powder channel 8 at a radial distance annular surrounding Groove 44 formed, on the one hand with the front end one extending through the housing 2 Compressed air duct 46 is in flow communication and on the other hand with a through the electrode holder 24 extending air channel 48 in fluid communication is.

    Die Spitze der Elektrode 22 ragt wenige Millimeter aus dem Luftkanal 48 heraus und befindet sich stromaufwärts in der Nähe einer Sprühdüsenöffnung 52. Der die Elektrode 22 enthaltende Endabschnitt des Luftkanals 48 ist durch ein Rohrstück 54 des Elektrodenhalters 24 gebildet, welches sich von einem Steg 56 axial nach vorne erstreckt. Der Steg 56 erstreckt sich diametral durch das Rohrstück 26, welches in das Gehäuse 2 von vorne eingesetzt ist.The tip of the electrode 22 protrudes a few millimeters out the air duct 48 and is upstream near a spray nozzle opening 52. The Electrode 22 containing end portion of the air channel 48th is through a pipe section 54 of the electrode holder 24th formed, which extends from a web 56 axially to extends in front. The web 56 extends diametrically through the pipe section 26, which in the housing 2 of is inserted in the front.

    Alle Teile des Elektrodenhalters 24 bestehen zusammen aus einem einstückigen Körper aus elektrisch isolierendem Material, z. B. Kunststoff. Der Elektrodenhalter 24 ist zusammen mit der Elektrode 22 und der elektrischen Verbindung 40 sowie dem Kontakt 38 ein austauschbarer Körper, welcher zwischen einem Düsenkörper 58 der Sprühdüsenöffnung 52 und dem Gehäuse 2 austauschbar angeordnet ist. Zum Austausch des Elektrodenhalters 24 braucht lediglich eine Überwurfmutter 60 vom vorderen Ende des Laufes 6 entfernt zu werden, damit der Düsenkörper 58 den Elektrodenhalter 24 freigibt.All parts of the electrode holder 24 are made together from a one-piece body of electric insulating material, eg. B. plastic. Of the Electrode holder 24 is together with the electrode 22 and the electrical connection 40 and the contact 38 an exchangeable body, which is between one Nozzle body 58 of the spray nozzle opening 52 and the housing 2 is arranged interchangeably. To exchange the Electrode holder 24 only needs one Union nut 60 from the front end of the barrel 6 be removed so that the nozzle body 58 the Electrode holder 24 releases.

    Vom dem im Außendurchmesser größeren vorderen Rohrstückabschnitt 30 erstreckt sich ein mit ihm einstückiger Rohrstutzen 62 nach vorne, in welchen der Düsenkörper 58 von vorne eingesetzt ist.From the larger in outside diameter front Pipe section 30 extends with it one-piece pipe socket 62 forward, in which the Nozzle body 58 is inserted from the front.

    Claims (7)

    1. Spray coating device for coating powder, comprising a powder channel (8), an electrode holder (24) arranged in the downstream end section of the powder channel and having a one-piece tubular piece (26) made of electrically insulating material and forming a section of the powder channel, its rear upstream tubular section (28) having a smaller outer diameter than a tubular section (30) adjacent thereto at the front, an electrical contacting device (34, 38) for contacting a high-voltage conductor (20) with an electrical connecting line (40) extending through the electrode holder (24) to at least one high-voltage electrode (22) carried thereby, the contacting device (34, 38) being arranged on a shoulder (32) directed towards the rear between the two tubular sections (28, 30), characterised in that the axial distance between the electrical contacting device (34, 38) and the rear end of the rear tubular section (28) is at least 1.5 cm, and that a groove (44) surrounding the powder channel (8) in an annular manner at a radial distance is formed in the shoulder (32) directed towards the rear, on the one hand, connected to a compressed-air duct (46) and, on the other hand, connected to an air duct (48) extending through the electrode holder (24) through which compressed air can be supplied to the at least one electrode (22).
    2. Spray coating device according to claim 1, characterised in that the distance is a maximum of 4 cm.
    3. Spray coating device according to claim 1, characterised in that the distance is in the region of between 2 cm and 3 cm.
    4. Spray coating device according to one of the preceding claims, characterised in that a connector (62) formed in one piece therewith projects from the front of the tubular section (30) having a larger outer diameter.
    5. Spray coating device according to claim 4, characterised in that the rear section of a spray nozzle (58) is inserted into the connector (62).
    6. Spray coating device according to one of the preceding claims, characterised in that a web (56) formed in one piece therewith extends through the tubular piece (26), a tubular piece (54) carrying the at least one electrode (22) projecting from the front of the said web in the centre of the powder channel.
    7. Spray coating device according to one of the preceding claims, characterised in that the electrode holder (24) can be exchangeably inserted from the front into a housing (2) in which the powder channel (8) is formed.
    EP99929157A 1998-08-22 1999-06-09 Electrode holder for a powder spray gun Expired - Lifetime EP1105220B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DE29924481U DE29924481U1 (en) 1998-08-22 1999-06-09 Spray coating arrangement for coating powder has contact arrangement on rearward facing fitting between two tube sections of powder channel least 1.5 cm. from rear end of rear tube section

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19838278A DE19838278A1 (en) 1998-08-22 1998-08-22 Spray coating arrangement for coating powder has contact arrangement on rearward facing fitting between two tube sections of powder channel least 1.5 cm. from rear end of rear tube section
    DE19838278 1998-08-22
    PCT/EP1999/003963 WO2000010722A1 (en) 1998-08-22 1999-06-09 Electrode holder for a powder spray gun

    Publications (2)

    Publication Number Publication Date
    EP1105220A1 EP1105220A1 (en) 2001-06-13
    EP1105220B1 true EP1105220B1 (en) 2003-04-23

    Family

    ID=7878450

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99929157A Expired - Lifetime EP1105220B1 (en) 1998-08-22 1999-06-09 Electrode holder for a powder spray gun

    Country Status (8)

    Country Link
    US (1) US6562138B1 (en)
    EP (1) EP1105220B1 (en)
    JP (1) JP4369058B2 (en)
    AT (1) ATE238104T1 (en)
    CA (1) CA2341186C (en)
    DE (2) DE19838278A1 (en)
    ES (1) ES2194475T3 (en)
    WO (1) WO2000010722A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7992515B2 (en) 2005-08-12 2011-08-09 J. Wagner Ag Electrode holder for a powder spraying device

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102005017931A1 (en) * 2005-04-18 2006-10-19 Itw Gema Ag Powder spray coating gun and gun body for this purpose
    EP2050506A1 (en) * 2007-10-19 2009-04-22 Boxal Netherlands B.V. Powder coating spraying apparatus
    JP6242854B2 (en) * 2012-04-12 2017-12-06 ノードソン コーポレーションＮｏｒｄｓｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Powder spray gun with wear-resistant electrode support

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3964683A (en) * 1975-09-02 1976-06-22 Champion Spark Plug Company Electrostatic spray apparatus
    GB8721481D0 (en) 1987-09-11 1987-10-21 Volstatic Ltd Powder delivery apparatus
    DE3904438A1 (en) * 1989-02-14 1990-08-16 Gema Ransburg Ag SPRAY COATING DEVICE FOR ELECTROSTATIC SPRAY COATING
    DE19546970B4 (en) * 1995-12-15 2006-08-17 Itw Gema Ag Powder spray device for electrostatic spray coating

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7992515B2 (en) 2005-08-12 2011-08-09 J. Wagner Ag Electrode holder for a powder spraying device

    Also Published As

    Publication number Publication date
    JP2002523212A (en) 2002-07-30
    ATE238104T1 (en) 2003-05-15
    CA2341186C (en) 2005-05-03
    DE59905216D1 (en) 2003-05-28
    ES2194475T3 (en) 2003-11-16
    CA2341186A1 (en) 2000-03-02
    EP1105220A1 (en) 2001-06-13
    WO2000010722A1 (en) 2000-03-02
    US6562138B1 (en) 2003-05-13
    JP4369058B2 (en) 2009-11-18
    DE19838278A1 (en) 2000-02-24

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