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Fluid dispenser having a rigid vial and flexible inner bladder

  • US 20020074362A1
  • Filed: 10/23/2001
  • Published: 06/20/2002
  • Est. Priority Date: 10/23/2000
  • Status: Active Grant
First Claim
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1. A dispenser for dispensing a fluid, comprising:

  • a rigid housing;

    a flexible bladder mounted within the housing and defining an interior chamber within the flexible bladder, and a fluid-receiving chamber between the flexible bladder and the rigid housing; and

    first means for creating a first pressure within the fluid-receiving chamber greater than a second pressure within the interior chamber of the bladder and thereby preventing the ingress of gases or vapors into the fluid-receiving chamber.

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