Capacitive scheme for measuring the level of a liquid
Patent 4295370 Issued on October 20, 1981. Estimated Expiration Date: 
July 17, 2000. 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.
July 17, 2000. 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 2691223 2741124 3230770 3376746 3492440 3498131 Liquid level gauging apparatus Sealed capacitor transducer for fluid flow measurement Condenser plate assembly Capacitive means for measuring the level of a liquid InventorAssigneeApplicationNo. 06/169819 filed on 07/17/1980US Classes:73/304C, Capacitative361/284Liquid levelExaminersPrimary: Yasich, Daniel M.Attorney, Agent or FirmInternational ClassesG01F 23/22 (20060101)G01F 23/26 (20060101) AbstractA plurality of conductive strips are situated on a receptacle for receiving a liquid which at least partially comprises dielectric material. A first electrode is commonly situated in spaced relation to each of the conductive strips and provides an electrical signal which is capacitively transmitted between the electrode and each of the conductive strips. A second electrode is commonly situated in spaced relation to each of the conductive strips and the electrical signal is capacitively transmitted between each conductive strip and the second electrode. The electrical signal being capacitively transmitted is modified as the liquid comes in proximity to each conductive strip whereby the level of the liquid is detected. | |
