Abstract: The invention relates to a device (17) which is used to spray a coating product in powder form onto a part (5), particularly for automatic retouching, and which is intended for an application booth (3). The invention is characterised in that it comprises: an essentially-vertically column (18), at least two carriages (19) which can move independently in an essentially-vertical manner along the length of the column (18), and coating product-application guns (10) which are supported by the carriages (19).

Abstract: A machine (4) is provided for removing dust from carbodies, before the paint coatings are applied to said bodies. Said machine is built on the principle of feather rollers rotary mounted about their central axis and rotationally driven, such as to engage the carbodies moved forward on a conveyer. At least two feather rollers (26, 27) extend one after the other, and are synchronously driven, with the angle between the respective axis (28, 29) of the consecutive rollers (26, 27) being adjustable by changing the tilting of at least one of their axis (28, 29). The machine can therefore accommodate varying carbody profiles. Such a design is applicable to dust removing roof and side machines.