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Aerosol dispenser

  • US 4,702,418 A
  • Filed: 09/09/1985
  • Issued: 10/27/1987
  • Est. Priority Date: 09/09/1985
  • Status: Expired due to Fees
First Claim
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1. A piezoelectric aerosol dispenser comprising:

  • a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region;

    backflow restrictive means for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region, said backflow restrictive means formed in part by said diaphragm; and

    means, including piezoelectric bender means, for driving fluid from said reservoir to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray.

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