Fluid flow control system
April 15, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3329311 3623052 3655095 Anti-clogging liquid administration apparatus and method Automatic control for liquid flow Device for regulating perfusion flowrate Digital memory with power outage and memory overload logic in a dialysis system Weight loss control system Flow control for an intravenous feeding system Apparatus for controlling the flow of intravenous fluid to a patient Patent #: 4300552 InventorAssigneeApplicationNo. 06/254304 filed on 04/15/1981US Classes:604/65, Material flow varying means controlled by condition responsive sensor222/58By the weight of the material in the supply containerExaminersPrimary: Howell, Kyle L.Assistant: Reichle, K. M. Attorney, Agent or FirmInternational ClassesG05D 7/06 (20060101)A61M 5/168 (20060101) AbstractIn a fluid flow control system a weight detector generates a signal representative of the weight of the fluid in the reservoir. A second signal is generated indicative of the desired fluid weight over time, and a first comparator produces an output indicative of the dissimilarity of the two signals. A programmed drop rate signal is modified by the first comparator's output to produce a desired drop rate signal. A drop detector produces a signal indicative of the actual drop rate. A second comparator is operative upon the desired drop rate signal and the actual drop rate signal to produce an output for operating the flow controller. | |
