Sterilizable pump unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 26, 2019
Grant Date -
Oct 1, 2015
app pub date -
Mar 24, 2015
filing date -
Mar 26, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The pump unit (10) has a particularly simple design, which includes just two housing parts (14, 15) and also four valve closure members (37) and pump pistons (25, 29). The valve closure members (37) are preferably identical to one another and are trapped in a pocket between both housing parts (14, 15). The housing parts (14, 15) are preferably permanently interconnected by an ultrasonic weld seam. The valve closure members are formed by disc-like or plate-like plastic parts, which are resilient per se and which may optionally have a central pin (42) as an assembly and orientation aid. As desired, the valve closure members bear against their respective valve seat (43) with or without bias and form valves which open and close particularly reliably, are responsive to the slowest flow velocities and can be easily sterilized.
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