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Dispenser device and cartridge for volatile substance with rate control for volatilization thereof

  • US 5,115,975 A
  • Filed: 07/24/1990
  • Issued: 05/26/1992
  • Est. Priority Date: 07/24/1990
  • Status: Expired due to Fees
First Claim
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1. In an apparatus for diffusing a volatilizable substance into an ambient atmosphere, a replaceable cartridge for containing the substance and for providing control of diffusion thereof, comprising:

  • a base;

    a membrane means cooperating with said base to form a first chamber for containing the substance for volatilization;

    said membrane means having predetermined characteristics for controlling a dispersal rate for a vaporized form of the substance;

    a cover cooperating with said base for enclosing said membrane means in said cartridge;

    a second chamber formed between said cover and said membrane means for the vaporized substance;

    said cover including vent means for venting the vaporized substance from said second chamber to the ambient atmosphere;

    vent seal means for releasably sealing said vent means to permit controlled passage of the vaporized substance from the cartridge to the ambient atmosphere;

    catalyst means for emitting energy to release said substance from a carrier therefor,control means for controlling said catalyst means,said control means comprising an electrical control circuit for controlling timing of operation of said vent seal means;

    displacing means for sensing partial insertion of said cartridge into a slot and for positioning said cartridge to receive energy from said catalyst means to effect volatilization of said substance; and

    means for engaging said vent seal means of said cartridge and for controlling operation thereof, thereby providing further control of passage of the vaporized substance from the cartridge to the ambient atmosphere.

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