Apparatus for coating pipe threads

A method and apparatus for coating one section of a substrate e.g. a pipe with corrosion resistant powder coating material by spraying the section to be coated with electrostatically charged, air-entrained powder through two stationary nozzles (20,42), one of which is directed at the section to be c...

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Bibliographic Details
Main Authors GRAY; KENNETH W, HOLLSTEIN; THOMAS E, FULKERSON; TERRENCE M, KEEFER; LARRY W
Format Patent
LanguageEnglish
Published 22.01.1991
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
NOZZLES
PERFORMING OPERATIONS
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TRANSPORTING
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Summary:A method and apparatus for coating one section of a substrate e.g. a pipe with corrosion resistant powder coating material by spraying the section to be coated with electrostatically charged, air-entrained powder through two stationary nozzles (20,42), one of which is directed at the section to be coated, and the other of which is directed angularly at another part of the substrate/pipe. To prevent overspray of the powder from contacting the substrate adjacent to the areas to be coated, a pair of air nozzles (66,68) are directed at the area of the pipe adjacent to the area to be coated.
Bibliography:Application Number: US19880258151