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Evaporator device of volatile products with variable evaporation intensity

  • US 6,278,840 B1
  • Filed: 12/22/1999
  • Issued: 08/21/2001
  • Est. Priority Date: 06/24/1997
  • Status: Expired due to Term
First Claim
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1. An evaporator device for volatile products comprising:

  • a container vessel comprising a wick;

    a casing comprising a central opening into which the wick is insertable, and heating means disposed in the casing for heating the wick with an intensity that varies depending on a position of the wick with respect to the heating means;

    said vessel and casing collectively comprising groove and tooth means, including at least one helicoidal groove and a first tooth that moves along the groove upon an axial displacement of the vessel in said casing, for maintaining the wick in said casing in any of a plurality of positions with respect to said heating means, including a first position wherein an end of the wick is a first distance from the heating means and a second position wherein the end of the wick is a greater distance from the heating means such that the heating means heats the wick with a greater intensity with the wick disposed in the first position than in the second position.

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