公开(公告)号：US3843054A

公开(公告)日：1974-10-22

申请号：US27859472

申请日：1972-08-07

Applicant: RANSBURG ELECTRO COATING CORP

Inventor： KENDALL R ,  PROBST R

IPC: B05B5/03 ,  B05B5/08 ,  B05B5/16 ,  B05B15/12 ,  B05B5/02

CPC classification number: B05B15/1218 ,  B05B5/032 ,  B05B5/08 ,  B05B5/1683

Abstract: An electrostatic powder spraying apparatus that includes a nonrotating disk-like member having an edge; the electrostatic field extends between the edge of disk and articles to be coated. A first means of the apparatus deflects powder radially outwardly into a chamber. The chamber is adjacent the first means and provides space in which tangential streams impart a spiral motion or whirling cyclone-type motion to the radially deflected powder. An apertured means is spaced from the non-rotating disk-like member. The spiral motion of entrained powder moves it outwardly along the surface of the non-rotating disk-like member and causes air to be aspirated through the aperture to mix with the powder moving radially outwardly along the surface of the disk-like member. By this means the powder is given sufficient momentum to be ejected from the edge of the disk to the vicinity of an article at a powder attracting potential where the electrostatic field forces can guide the charged powder to the article.