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US 7,731,067 B2Granted
Device for the metered dispensation of a medium
OwnerEric Schliemanninventor
Life of this patent
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Abstract
A device for the dosed output of a medium from a container through an opening in an upper housing part. A valve piston tip is associated with said opening for the closing thereof. A piston surface, which is pressed against a spring, is adjacent to the valve piston tip and is used as part of a valve piston, which is sealingly guided in a piston chamber in the upper part of the housing and forms a filling chamber which is connected to the container, between the upper part of the housing and the opening.
Claims18
A container comprising:
- a housing containing a medium to be dispensed, an opening and a dispensing device associated with the opening for the selective metered dispensing of the medium, the dispensing device comprises a valve piston having an upper surface and an opposed lower surface, a valve piston tip projecting from the upper surface for selectively closing off the opening, spring means shutting the lower surface for biasing the valve piston tip against the opening for closing off the same, passage means for communicating the medium from an interior space of the container to a filling space above the upper surface of the piston, and a compressible element comprising an air ring is arranged in the filling space, wherein the medium in the filling space acts on the piston in opposition to the spring means for moving the valve piston tip away from the opening.
Dependencies are inferred from the claim text.