Capacitive means for measuring the level of a liquid
Patent 4099167 Issued on July 4, 1978. Estimated Expiration Date: 
July 4, 1995. 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 4, 1995. 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 2648804 3218863 3588859 Liquid level gauging apparatus Liquid level sensor and electrode assembly therefor Patent #: 3939360 InventorsApplicationNo. 05/767533 filed on 02/10/1977US Classes:340/620, Electrode probe361/284, Liquid level73/304CCapacitativeExaminersPrimary: Caldwell, Sr., John W.Assistant: Myer, Daniel Attorney, Agent or FirmInternational ClassesG01F 23/22 (20060101)G01F 23/26 (20060101) AbstractElectrodes are disposed on portions of a container comprising dielectric material, an electrical signal is capacitively transmitted between said electrodes, said electrical signal is shunted by the presence of a liquid in close proximity to said electrodes, and said shunting is detected. | |
