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Device for applying coatings to lengthy products

  • US 8,104,424 B2
  • Filed: 01/22/2003
  • Issued: 01/31/2012
  • Est. Priority Date: 09/26/2002
  • Status: Expired due to Fees
First Claim
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1. A device for coating a lengthy product, comprising:

  • a tank with melted coating material and an internal pressure;

    a camera above the tank;

    a passage extending between the tank and the camera for supplying coating material from the tank into the camera;

    the camera having a product inlet and a product outlet both being below the level of coating material in the camera such that product moving through the inlet and outlet is coated with the melted coating material;

    the camera having an internal pressure less than atmospheric pressure to prevent leakage of melted coating material through the inlet and outlet;

    a camera pressure detector; and

    wherein the camera is at a lower pressure than the tank to cause melted coating material to flow upwardly through the passage from the tank to the camera.

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