(19)
(11) EP 0 734 777 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.08.1997 Bulletin 1997/34

(43) Date of publication A2:
02.10.1996 Bulletin 1996/40

(21) Application number: 96301943.5

(22) Date of filing: 21.03.1996
(51) International Patent Classification (IPC)6: B05B 5/053
(84) Designated Contracting States:
DE FR GB

(30) Priority: 28.03.1995 US 412053

(71) Applicant: GRACO INC.
Minneapolis, Minnesota 55434 (US)

(72) Inventor:
  • Ma, Yamin
    Roseville, Minnesota 55113 (US)

(74) Representative: Sturt, Clifford Mark et al
J. MILLER & CO. 34 Bedford Row, Holborn
London WC1R 4JH
London WC1R 4JH (GB)

   


(54) Electrostatic ionizing system


(57) An electrostatic ionizing system for use in connection with a sprayer (10) for spraying conductive liquid particles, having a conductive needle (20) positioned near the centre of the sprayer (10), sprayed particle pattern (24), the needle (20) having a diameter of less than about 250 micrometers and a needle tip sharpened to have a radius of curvature (R) of less than about 50 micrometers, and a second electrode (12) spaced approximately four inches (10.16cm) from the needle (20) and being formed as a part of said sprayer (10).






Search report