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Fragrance diffuser

  • US 5,111,477 A
  • Filed: 05/07/1990
  • Issued: 05/05/1992
  • Est. Priority Date: 05/07/1990
  • Status: Expired due to Fees
First Claim
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1. An aroma dispenser comprising:

  • solid cartridge means for emitting a fragrance into the air, said cartridge means having at least one external surface with a mating face, and further having first means for keying said cartridge means such that a particular cartridge means can be identified by its keying means, said first keying means including a plurality of separate apertures disposed in said mating face and directed inwardly from said external surface of said cartridge means to form a first predefined identification pattern; and

    housing means for receiving and containing said solid cartridge means, said housing means having at least one internal surface with a mating face, and further having second means for keying said housing means such that a particular housing means can be identified by its keying means, said second keying means including a plurality of separate projections disposed on said mating face and directed inwardly from said internal surface of said housing means to form a second predefined identification pattern;

    said first and second keying means including means for mating said mating face of said cartridge means with said mating face of said housing means only when said first identification pattern corresponds to said second identification pattern, and for preventing the insertion into said housing means of any cartridge means lacking a first identification pattern which corresponds to said second identification pattern.

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