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One-way valve device

  • US 20060197042A1
  • Filed: 01/24/2004
  • Published: 09/07/2006
  • Est. Priority Date: 01/30/2003
  • Status: Active Grant
First Claim
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1. A one-way device for discharging a flowable material from a container of a preferably reducible volume comprising an outer cap which includes an exit opening for the material, said one-way device comprising a valve seat arranged in a neck of the container and comprising a base body which extends transversely across the opening of the container neck and rests on the inner wall of the container neck and includes at least one passage opening, and a projection which extends in axial direction of the container neck towards the exit opening and an elastic seal which comprises an annular section resting on the base body, and a sleeve-like section which surrounds the projection at a radial distance with the exception of its end section which in the closed state of the one-way valve device rests on the projections, the outer cap being arranged to be movable between a rearward closing position and an advanced opening position, and comprising an inner annular attachment which in the closing position presses the sleeve-like section of the seal into abutment with the projection.

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