Controlled force fluid delivery system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Feb 14, 2002
app pub date -
Sep 18, 2001
filing date -
Jul 7, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A controlled force fluid delivery system which provides fluid delivery with continuity over a wide range of flow rate. The system sets the force provided by an energy storage device, e.g. a spring and the opening of system outlet valve in response to a low volume due command. Specifically at a low flow rate, the controlled force is decreased and/or the outlet valve of the system closes before the fluid flow reaches stable velocity whereas at a high flow rate the controlled force is increased and/or the outlet valve does not close until the fluid stops flowing. The system also reduces fluid flow rate variation in part by adjusting the timing and the level of opening and closing the outlet valve, and the speed of pumping the fluid out of system central cassette chamber.
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