Dispenser drain attachment for flowable media
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United States of America Patent
Stats
-
Jun 22, 2004
Grant Date -
Jun 20, 2002
app pub date -
Dec 14, 2001
filing date -
Dec 15, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dispenser drain attachment includes a threaded cap having a tapered drain socket and an associated drain tube. The interior of the drain tube has a double diaphragm which seals the drain tube, as well as an elastic gas bellows for dispensing liquid portions by alternating deformation of the diaphragm disks of the double diaphragm, which acts as a one-way valve. Such deformation is the result of pressure conditions which change when the gas bellows is compressed and then again released. The dispenser drain attachment is assembled from only two one-piece structural parts, each of which is produced by a two-component injection molding procedure.
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