Abstract: A system for spraying a powder coating product includes a rotary sprayhead which is preferably of the type which is electrostatically charged. The sprayhead has a rotary part which can be driven in rotation. A narrow flow space in the sprayhead in the form of a flat ring incorporates a flow chicane forming an impact surface on the path of the coating product.

Abstract: This device comprises a rotating spray element, such as a bowl, and drive means, such as a rotor, adapted to drive said element in rotation. It further comprises means for magnetic coupling between the rotating element and the drive means. An air-gap is formed between the coupling means which advantageously include at least one magnet associated with a looping annulus. The magnet may be fitted on the rotor and/or on the bowl.

Abstract: This invention relates to a process for changing product in an installation for spraying coating product, comprising a step of bringing a first reservoir towards a suitable area of a cleaning/filling station and consisting in:

Abstract: A process and station for changing product in an installation for spraying coating product, by bringing a first reservoir towards a suitable area of a cleaning/filling station, separating a sub-assembly composed of the first reservoir and a first spray associated therewith, with respect to the robot, connecting with the robot a second, similar sub-assembly composed of a second reservoir and a second spray, adapted to be used for spraying coating product during cleaning and/or filling of the first reservoir and the first spray, and proceeding with cleaning and/or filling of the first reservoir and the first spray in the area.

Abstract: A process and station for changing product in an installation for spraying coating product, by bringing a first reservoir towards a suitable area of a cleaning/filling station, separating a sub-assembly composed of the first reservoir and a first spray associated therewith, with respect to the robot, connecting with the robot a second, similar sub-assembly composed of a second reservoir and a second spray, adapted to be used for spraying coating product during cleaning and/or filling of the first reservoir and the first spray, and proceeding with cleaning and/or filling of the first reservoir and the first spray in the area.

Abstract: A safety tripping system is controlled to prevent electrical arcing during use of high voltage apparatus, in particular an electrostatic coating product applicator. The safety tripping system is activated if at least one current parameter reaches a threshold. The threshold is varied as a function of the value of the high voltage in accordance with a predetermined law.

Abstract: A process and device for mounting a sub-assembly that includes at least one coating product spray on a mobile part of a robot. The method includes:—engaging a support fast with the mobile part in a ring connected to the sub-assembly;—rotating this ring with respect to this support by bringing first projections provided on the periphery of the ring opposite second projections provided on the periphery of this support; and—displacing a bearing plate, connected to the mobile part, in the direction of this sub-assembly, until the plate exerts a bearing effort on the sub-assembly, the bearing effort being transmitted to the ring, with the result that the first and second projections are brought into mutual engagement.

Abstract: The invention concerns an atomizing bowl (4) for coating product electrostatic rotary sprayhead unit (1), said bowl comprising a bell (7) for distributing the product made from a conductive material and arranged to be brought to high voltage when the sprayhead unit is in operation, so as to charge electrostatically said product by contact. The invention is characterized in that said bell is electrically connected to at least one corona discharge element (22, 25, 28) from one tapered end (22a, 25a, 25b, 28a), said tapered end being arranged in the proximity of said bowl outer surface. The bowl is electrically connected to a generator capable of detecting variations in the glow currents passing through the discharge elements (22, 25, 28) or the bowl tips.

Abstract: A method and device for monitoring the production of a high voltage for use in electrostatic application of a coating product, the high voltage being produced by a generator and the monitoring being performed by a circuit for measuring an electrical parameter associated with the high voltage, together with verifying operation of the circuit immediately following start-ups of the generator.

Abstract: A magnetofluidic suspension turbine combines a fluidic bearing and a magnetic circuit comprising a magnet in the stator and an airgap defined between polepieces of a ferromagnetic circuit between the rotor and the stator. This ferromagnetic circuit includes facing centering members on opposite sides of the airgap.

Abstract: A method and device for monitoring operation of a high voltage generator which converts an input voltage into an output voltage which is higher than the input voltage, by measuring at least one first physical quantity which is representative of the input voltage; deriving at least one parameter from the at least one measured first physical quantity; comparing the at least one parameter with a second measured physical quantity which is representative of the magnitude of the output voltage; and producing a response when a predetermined minimum differential exists between the at least one parameter and the second measured physical quantity.

Abstract: In a coating plant, the powder feed device is cooled permanently in order to avoid the deterioration of the powder which could be caused by an excessively high temperature. The air for the fluidization of the powder contained in the reservoir (1) is cool, dry air. A heat exchanger (30) supplies a closed loop circuit which includes an annular cooling chamber (32) and a coil (33) arranged in the path of the powder. The shaft of the worm screw may also be cooled.

Abstract: A machine with an on-board supply tank for spraying a coating material. In one embodiment, the spraying machine includes a carriage (3) supporting an arm (4) with an end-mounted holder containing a tank (6) for supplying a spray nozzle (8). The arm further includes a coating material changing assembly (9) which is translatably movable towards the holder (5) to effect mutual engagement between quick connection units (12, 13) during cleaning/filling of the tank (6). The machine is useful for forming coatings consisting of an electrically conductive material.

Abstract: A self propelled baler includes a front pick-up device (10), a forward mounted cab (4), and engine (5) behind the cab and above a drive mechanism for the baler ram reciprocatable in a baling chamber. The crop picked up by the pick-up device is conveyed by a conveying device (20), positioned between the front drive wheels, rearwardly to a feeding device (30) which feeds the crop upwardly into the baling chamber.

Abstract: In a process and device for spraying a coating product onto an article from a sprayer to which coating product is supplied from a reservoir equipped with a piston which is moved along a path in order to transport the coating product to the sprayer, movement of the piston is controlled as a function of movement of the sprayer relative to the article.

Abstract: An electrostatic coating product spraying device comprising: at least one sprayer having an electrostatic charging mechanism; and a support structure supporting the at least one sprayer, the structure including elements which are at ground potential, wherein the support structure includes an electrostatic shield positioned and arranged so that the electrostatic charging mechanism is located between the electrostatic shield and an object to be coated. The electrostatic shield is maintained at a potential differing from ground potential.

Abstract: The drive device for an agricultural harvester includes a gear unit (5) driven by an internal combustion engine through a hydrostatic transmission comprised of a hydraulic pump (1) and a hydraulic motor (2). The transmission unit (5) drives a pair of drive wheels (12) through the differential (8). A power takeoff device (13) is installed between the hydraulic motor (2) and the transmission unit (5) and a clutch is installed between the power takeoff device (13) and the transmission unit (5) thus permitting operation of the power takeoff device while power to the drive wheels is disconnected. A brake (4) is provided on the transmission unit and a brake is provided for each of the drive wheels (12).

Abstract: A method and apparatus for generating a high voltage by converting input power at a low voltage to output power at a high voltage, by: supplying input power to a low voltage unit to produce a periodic signal having a frequency; supplying the periodic signal to a rectifier voltage multiplier of a specific type to cause the rectifier voltage multiplier to produce the output power at a high voltage, wherein the ratio of output power to input power is a function of the frequency of the periodic signal; identifying the type of the rectifier voltage multiplier; and continually adjusting the frequency of the periodic signal toward a value which maximizes the ratio of output power to input power.

Abstract: A coating product sprayer device forms an overhead or lateral machine including a member carrying at least one sprayer mobile relative to objects to be coated and at least one lateral gantry carrying this member, which is adjustable in position in an opening in a front of the gantry. This member is moved up and down and/or with a lateral tracking movement by at least one coupling member such as a drive belt. At least one sealing panel closes off at least part of the opening and is fixed to one such flexible coupling member.

Abstract: System for fixing a rotary spraying element to a drive rotor. According to the invention, the rotary spraying element (12) for projecting the coating product is attached to drive means (14) by means of an elastic coupling element (25). Centrifugal force increases assembly retaining force.