Dispenser for a liquid, in particular a bottle-top dispenser
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United States of America Patent
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-
Mar 1, 2005
Grant Date -
Feb 26, 2004
app pub date -
Nov 7, 2002
filing date -
Aug 23, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dispenser for a liquid, in particular, a bottle-top dispenser, with a cylinder/piston arrangement with a measuring cylinder (1) and a piston (2) which is capable of being displaced therein in a sealed manner, with a valve arrangement (3) connected to the piston (2), with an inlet valve and an outlet valve (5), each provided with a valve body (6) and a valve seat (7). The dispenser is characterized in that all of the parts or regions of the dispenser touched by the liquid are made entirely of a pure thermoplastic material or are coated with a pure thermoplastic material in such a manner that no contact is made by the liquid with the substrate coated with plastic material or with components of the substrate.
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