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Single dose dispenser having a piercing member

  • US 5,307,953 A
  • Filed: 12/02/1992
  • Issued: 05/03/1994
  • Est. Priority Date: 12/03/1991
  • Status: Expired due to Term
First Claim
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1. A unit-dose dispenser for manual discharge of a single dose of a flowable substance in the form of a spray, comprising a casing which has a nozzle and two shoulders, one on either side of this nozzle, the nozzle having a piston member extending inwardly from and outlet opening, the piston member having at least one discharge channel, a container of the substance to be discharged being operatively positioned with respect to the piston member, and a seal being arranged across the container to seal in all the substance to be discharged, the piston member having a piercing member which extends towards the seal, whereby on pressing the container onto the piston member the seal is pierced to allow the contents of the container to be expelled along the discharge channel and out through the outlet opening in the form of the spray.

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