Appliques for surfaces having complex curvature

B - Operations – Transporting – 44 – C

Patent

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B44C 1/18 (2006.01) G05B 19/4099 (2006.01) G05B 19/41 (2006.01)

Patent

CA 2219219

Ever more stringent environmental restrictions make it ever more challenging to apply coatings by conventional processes like spray painting because of the volatile solvents and hazardous pigments. The present invention is an alternative for applying a coating precisely on a surface. In the method of the invention, we apply appliqués of constant Gaussian curvature to the corresponding areas of comparable curvature. We make the appliqués on a family of molds of different Gaussian curvature and thereby avoid making a "splash" mold of the surface of interest to create the appliqués or encountering the ridges, creases, or gaps that otherwise occur with attempts to cover the surface with flat (planar) appliqués.

Des restrictions toujours plus rigoureuses concernant l'environnement rendent encore plus provocant le fait d'appliquer des revêtements par des procédés conventionnels tels que la peinture au pistolet à cause des solvants volatils et des pigments dangereux que la peinture renferme. La présente invention propose un autre procédé consistant à appliquer avec précision un revêtement sur une surface. Selon ce procédé, nous appliquons des films de courbure gaussienne constante sur des surfaces correspondantes de courbure comparable. Nous produisons les films à appliquer à l'aide d'une famille de moules de courbure gaussienne différente au lieu de réaliser un moule "par projection" sur la surface concernée pour former les films à appliquer, ce qui évite aussi de se heurter au problème des nervures, des plis ou des fentes que l'on connaît lorsque l'on essaye de recouvrir la surface avec des films à appliquer plats (plans).

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