GB960102A - Improvements in and relating to apparatus for electrostatically spray coating - Google Patents

Improvements in and relating to apparatus for electrostatically spray coating

Info

Publication number
GB960102A
GB960102A GB21535/60A GB2153560A GB960102A GB 960102 A GB960102 A GB 960102A GB 21535/60 A GB21535/60 A GB 21535/60A GB 2153560 A GB2153560 A GB 2153560A GB 960102 A GB960102 A GB 960102A
Authority
GB
United Kingdom
Prior art keywords
electrode
coating
insulating material
earthed
air gap
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
Application number
GB21535/60A
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.)
Ransburg Corp
Original Assignee
Ransburg Corp
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 Ransburg Corp filed Critical Ransburg Corp
Publication of GB960102A publication Critical patent/GB960102A/en
Expired legal-status Critical Current

Links

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
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces

Landscapes

  • Electrostatic Spraying Apparatus (AREA)

Abstract

960,102. Electrostatic paint spraying. RANSBURG ELECTRO-COATING CORPORATION. June 20, 1960 [June 18, 1959], No. 21535/60. Headings B2B and B2F. An electrostatic device for coating an article with liquid material comprises an atomizing device with an exposed charging electrode at its forward end connected to an electric circuit which impresses on it a high voltage, but which is so responsive to changes in the length of the air gap between the electrode and the nearest earthed object as to appreciably reduce the potential difference therebetween as the air gap decreases. Liquid is fed to the device for atomization therefrom and charging by the electrode, which is surrounded by a shield of insulating material projecting forwardly thereof greater than the sparking distance from the electrode to the nearest earthed object, but substantially less than would be necessary if the electrical circuit were substantially unresponsive to changes of air gap. As shown, a hand-held gun comprises an insulating body portion 75 and an earthed metal grip 76 with a trigger 77 controlling the flow of liquid coating material. An annular atomizing member 78 is mounted for rotation by a motor 84; it is preferably made of insulating material having a coating of very slight conductivity, and is charged to a high voltage, e.g. 80-90 kV, by a source 81 through resistors 79 and 80, of about 500 megohms each, and a brush 87. Within the member 78 is an inner electrode 82 of insulating material having a slightly conductive coating; this is maintained at an intermediate voltage by leakage current from the member 78 which develops a potential difference across a resistor 83, e.g. of about 10,000 megohms, one end of this resistor being connected to the electrode 82, and the other earthed through the motor 84. A shield 85 of good insulating material, e.g. polyethylene, surrounds the member 78, and projects forwardly, at 85a, beyond the edge 78a, as well as rearwardly at 85b. Coating material is fed to the member 78 through a tube 86, and is atomized at the edge 78a. Specification 865,765 is referred to.
GB21535/60A 1959-06-18 1960-06-20 Improvements in and relating to apparatus for electrostatically spray coating Expired GB960102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US821319A US3009441A (en) 1959-06-18 1959-06-18 Apparatus for electrostatically spray coating

Publications (1)

Publication Number Publication Date
GB960102A true GB960102A (en) 1964-06-10

Family

ID=25233073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21535/60A Expired GB960102A (en) 1959-06-18 1960-06-20 Improvements in and relating to apparatus for electrostatically spray coating

Country Status (5)

Country Link
US (1) US3009441A (en)
BE (1) BE592009A (en)
CH (1) CH370679A (en)
DE (1) DE1677171C3 (en)
GB (1) GB960102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135908A (en) * 1983-03-03 1984-09-12 Nat Res Dev Electrostatic sprayers
US7055768B1 (en) 1997-05-23 2006-06-06 John David Stratton Rotary device for transmission of material in particulate form

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270215A (en) * 1960-11-02
US3613993A (en) * 1968-10-28 1971-10-19 Gourdine Systems Inc Electrostatic painting method and apparatus
ZA791659B (en) * 1978-04-17 1980-04-30 Ici Ltd Process and apparatus for spraying liquid
DE3026241C2 (en) * 1980-07-10 1985-03-21 Ernst Roederstein Spezialfabrik für Kondensatoren GmbH, 8300 Landshut Hand-held device for electrostatic flocking of objects
DE3429075A1 (en) * 1984-08-07 1986-02-20 Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim Device for the electrostatic coating of articles
US4739935A (en) * 1986-03-12 1988-04-26 Nordson Corporation Flexible voltage cable for electrostatic spray gun
US4986471A (en) * 1989-07-03 1991-01-22 General Dynamics Corp., Air Defense Systems Div. Remote indicator light and safety shield for electrostatic spray gun
ATE202014T1 (en) * 1991-03-01 2001-06-15 Procter & Gamble SPRAYING LIQUIDS
DE4340441A1 (en) * 1992-12-03 1994-06-09 Nordson Corp Rotating atomiser for coating with paint - has hollow drive shaft for spray head with feed pipe inside and electrostatic charge applied
US5474236A (en) * 1992-12-03 1995-12-12 Nordson Corporation Transfer of electrostatic charge to a rotary atomizer head through the housing of a rotary atomizing spray device
EP0767005B1 (en) * 1995-04-06 2002-12-18 Abb K.K. Rotary atomizing head type coating machine
JP3322100B2 (en) * 1995-11-09 2002-09-09 日産自動車株式会社 Rotary atomizing electrostatic coating equipment
JP3726329B2 (en) * 1996-02-16 2005-12-14 トヨタ自動車株式会社 Bell head of rotary atomizing electrostatic coating machine and rotary atomizing electrostatic coating machine
DE19721615A1 (en) * 1997-05-23 1998-12-10 R D T Advanced Painting Techno Device with rotating bodies
US6739529B2 (en) * 1999-08-06 2004-05-25 Cold Jet, Inc. Non-metallic particle blasting nozzle with static field dissipation
US6322011B1 (en) * 2000-03-14 2001-11-27 Illinois Tool Works Inc. Electrostatic coating system and dual lip bell cup therefor
FR2915115B1 (en) * 2007-04-23 2010-09-10 Sames Technologies SPRAYING DEVICE, PROJECTION DEVICE COMPRISING SUCH AN ORGAN, PROJECTION PLANT AND METHOD OF CLEANING SUCH AN ORGAN
WO2009137835A2 (en) * 2008-05-09 2009-11-12 Fabian Santiago Overspray shield devices suitable for use with material application apparatus
JP2010227808A (en) * 2009-03-26 2010-10-14 Panasonic Electric Works Co Ltd Electrostatic atomization apparatus
JP5602561B2 (en) * 2010-09-27 2014-10-08 トヨタ自動車株式会社 Electrostatic painting gun

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE391106A (en) * 1924-02-07
US2302289A (en) * 1938-12-06 1942-11-17 Union Oil Co Electrified spray method and apparatus
US2658009A (en) * 1948-05-13 1953-11-03 Ransburg Electro Coating Corp Electrostatic coating method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135908A (en) * 1983-03-03 1984-09-12 Nat Res Dev Electrostatic sprayers
US7055768B1 (en) 1997-05-23 2006-06-06 John David Stratton Rotary device for transmission of material in particulate form

Also Published As

Publication number Publication date
US3009441A (en) 1961-11-21
DE1677171A1 (en) 1970-03-05
DE1677171B2 (en) 1974-01-03
CH370679A (en) 1963-07-15
DE1677171C3 (en) 1974-07-25
BE592009A (en) 1960-12-19

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