Linear peristaltic pump with fingers and membrane and finger for such a pump
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United States of America Patent
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Nov 25, 2014
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N/A
app pub date -
Sep 16, 2008
filing date -
Sep 20, 2007
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Abstract
A linear peristaltic pump with fingers includes a membrane positioned between the pumping fingers (250) and the tube. A part of the membrane against which the fingers (250) press, which part is called the track (212), is kept in permanent contact with the end of the fingers (250) throughout the duration of the pumping cycle, even in the absence of any tube. This material will be more rigid than the rubber conventionally used but, by virtue of the permanent contact, the track will not remain pressed against the tube but will, by contrast, be lifted by the finger (250). It will thus be possible to select a stronger material that will suffer less wear for the track. The precision of the pump will be guaranteed for longer and membrane changes that are painstaking and costly in terms of time and in terms of labor will be avoided.
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