Patent ID: 7247353

Claim:
A method for contactless application of a coating on a three dimensionally distributed surface ( 14 ; 24 ; 34 ; 44 ; 54 ; 74 ; 84 ; 104 ), said method comprising applying electrically charged particles ( 15 ; 25 ; 35 ; 55 ; 65 ; 75 ; 85 ; 105 ) in such positions on said surface as to form a predetermined pattern, by guiding each of said particles individually to a predetermined position on said surface by means of an adjustable electric field ( 12 ; 22 ; 32 ; 42 ; 52 ; 72 ; 82 ; 102 ) having flux lines with a longitudinal direction extending through said surface, whereby said particles form said coating according to said predetermined pattern on said surfaces, wherein said electric field is applied over said surface between an electrode ( 11 ; 21 ; 31 ; 41 ; 51 ; 71 ; 101 ) and a means ( 10 ; 20 ; 30 ; 40 ; 50 ; 60 ; 70 ; 80 ; 100 ) for ejecting said particles, adjusting the relative positions of said means ( 10 ; 20 ; 30 ; 40 ; 50 ; 60 ; 70 ; 80 ; 100 ) for ejecting said particles and said surface and said electrode ( 11 ; 21 ; 31 ; 41 ; 51 ; 71 ; 101 ) in order to control the positions at which said particles are applied on said surface.