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1. WO1989004882 - TETE COLLECTRICE LOCALISEE A DEUX VITESSES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:
1.' Apparatus for applying a fusible grannular precursor of a protective and/or decorative coating to the surface of an article, the apparatus comprising means for dispensing a stream of the fusible grannular precursor in a stream of a bearing fluid, means for recovering fusible grannular precursor that does not adhere to the surface of the article, means for mounting the dispensing means within the recovery means and means for coupling the recovery means to means for reclaiming fusible grannular precursor recovered by the recovery means, the recovery means including a first manifold, means for establishing in the first manifold a
subambient pressure, a second manifold, means for establishing in the second manifold a subambient
pressure, means providing a first series of inlets, the inlets of the first series generally surrounding the dispensing means, means for coupling the inlets of the first series to the first manifold, means providing a second series of inlets, and means for coupling the inlets of the second series to the second manifold.
2. The apparatus of claim 1 wherein the means for coupling the inlets of the first series to the first manifold comprises an independently controllable damper for controlling flow through each inlet of the first series.
3. The apparatus of claim 2 wherein the means for coupling the inlets of the second series to the second manifold comprises an independently controllable damper for controlling flow through each inlet of the second series.

4. The apparatus of claim 3 and further comprising a fusible grannular precursor deflection shield, means for movably mounting the deflection shield adjacent the dispensing means, and means for selectively moving the deflection shield between a use orientation in which the shield deflects fusible grannular precursor dispensed by the dispensing means primarily into one of the inlets of the second series and a storage
orientation in which the shield lies between the
dispensing means and said one of the inlets of the second series.
5. The apparatus of claim 4 and further comprising second means for dispensing a stream of fusible grannular precursor in a stream of a bearing fluid, means for mounting the second dispensing means within the recovery means, a second fusible grannular precursor deflection shield, means for movably mounting the second deflection shield adjacent the second
dispensing means, and means for selectively moving the second deflection shield between a use orientation in which the second deflection shield deflects fusible grannular precursor dispensed by the second dispensing means primarily into a second one of the inlets of the second series and a storage orientation in which the second shield lies between the second dispensing means and said second one of the inlets of the second series.
6- The apparatus of claim 1 wherein the means for coupling the inlets of the second series to the second manifold comprises an independently controllable damper for controlling flow through each inlet of the second series .

7. The apparatus of claim 6 and further comprising a fusible grannular precursor deflection shield, means for movably mounting the deflection shield adjacent the dispensing means, and means for selectively moving the deflection shield between a use orientation in which the shield deflects fusible grannular precursor dispensed by the dispensing means primarily into one of the inlets of the second series and a storage
orientation in which the shield lies between the
dispensing means and said one of the inlets of the second series.
8. The apparatus of claim 7 and further comprising second means for dispensing a stream of fusible grannular precursor in a stream of a bearing fluid, means for mounting the second dispensing means within the recovery means, a second fusible grannular precursor deflection shield, means for movably mounting the second deflection shield adjacent the second
dispensing means, and means for selectively moving the second deflection shield between a use orientation in which the second deflection shield deflects fusible grannular precursor dispensed by the second dispensing means primarily into a second one of the inlets, of the second series and a storage orientation in which the second shield lies between the second dispensing means and said second one of the inlets of the second series.
9. A collection head for collecting dispensed particulate material that does not adhere to an article, at least part of the surface of which is to be coated by the dispensed particulate material, the collection head comprising means for dispensing the particulate
material, a first outer shell defining a boundary of the collection head, a second shell lying entirely within the first shell,, the second shell including means providing a primary collection duct, the first and second shells cooperating to define between them a secondary collection duct, a first manifold, means for coupling the first manifold to the primary duct, a second manifold, means for coupling the second manifold to the secondary duct, means for coupling the first and second manifolds to means for reclaiming dispensed particulate material that' does not adhere to the
article, and means for independently controlling flow through the first and second ducts.
10. The apparatus of claim 9 wherein the first outer shell includes means defining a lip region having a first contour, the surface of the article having a second contour, the first contour generally conforming to a portion, but less than all, of the second contour.
11. The apparatus of claim 10 including means providing a plurality of primary collection ducts.
12. The apparatus of claim 11 including means for independently controlling flow through each of the primary collection ducts.
13. The apparatus of claim 10 including means providing a plurality of secondary collection ducts.
14. The apparatus of claim 13 including means for independently controlling flow through each of the secondary collection ducts.
15. The apparatus of claim 10 and further comprising a particulate material deflection shield.

means for movably mounting the deflection shield
adjacent the dispensing means, and means for selectively moving the deflection shield between a use orientation in which the shield deflects particulate material dispensed by the dispensing means primarily into the primary collection duct and a storage orientation in which the shield lies between the dispensing means and the primary collection duct.