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Powder spraying or scattering apparatus and method

  • US 4,800,102 A
  • Filed: 08/24/1987
  • Issued: 01/24/1989
  • Est. Priority Date: 11/28/1985
  • Status: Expired due to Fees
First Claim
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1. A powder spraying or scattering apparatus comprising:

  • material supply means for spraying or scattering a solid particulate powder material;

    horizontal conveyor means disposed beneath said material supply means for supporting and conveying a substrate onto which the solid particulate powder material is to be sprayed or scattered at a predetermined position;

    a flat disc member rotatable about a vertical axis and disposed below said material supply means and above said conveyor means and having an opening for passing therethrough the solid particulate powder material sprayed or scattered from said material supply means and applying the solid particulate powder material to said substrate at said predetermined position and a portion for blocking the passage of the solid particulate powder material;

    scraper means disposed above and closely adjacent to said flat disc member in a position remote from said material supply means, said scraper means being effective to deflect said solid particulate powder material from the surface of said disc through said opening; and

    a lower solid particulate powder material receiving member disposed beneath said scraper for collecting material deflected by said scraper through said opening.

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