Coating apparatus – Projection or spray type – Applying solid particulate material
Patent
1997-01-16
1999-11-30
Simmons, David A.
Coating apparatus
Projection or spray type
Applying solid particulate material
21912184, B05B 700, B23K 2600
Patent
active
059935499
ABSTRACT:
In order to improve a powder coating arrangement for the application of melted coating powder onto a substrate, comprising a preparation unit for generating a flow of coating powder, a powder applicator head, from which the flow of coating powder issues and spreads in the form of a directed jet of powder towards the substrate, a melting zone, through which the flow of coating powder passes in a direction of passage, and an optical beam guidance system, which directs a laser beam generated by a laser onto the melting zone to melt the coating powder, such that the coating powder may be essentially completely melted before impact on the substrate, it is proposed that the melting zone is arranged in the powder applicator head, and that the optical beam guidance system is equipped with several elements for reflecting the laser beam, which permit the laser beam to pass several times through at least one heating zone for the flow of coating powder in the region of the melting zone transversely to the direction of passage.
REFERENCES:
patent: 4947463 (1990-08-01), Matsuda et al.
patent: 4958058 (1990-09-01), Scheidt et al.
patent: 5229272 (1993-07-01), Ito
Huonker Martin
Kindler Helmut
Deutsche Forschungsanstalt fuer Luft - und Raumfahrt e.V.
Hoppin Ralph F.
Lipsitz Barry R.
Padgett Calvin
Simmons David A.
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