Reservoir level control system
April 9, 2012. 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 3759286 Apparatus to control the water level in a swimming pool Apparatus for maintaining a predetermined liquid level Automated surge weir and rim skimming gutter flow control system Liquid level sensing apparatus Control circuitry for water level control of pools Liquid level control apparatus Water level control device Apparatus for controlling water level Swimming pool control system InventorsApplicationNo. 868081 filed on 04/09/1992US Classes:4/508, And water level control4/496, Accessory137/392, Electrical characteristic sensing137/563, Closed circulating system307/118Fluid pressure, density, level, velocity or humidityExaminersPrimary: Yasich, Daniel M.Attorney, Agent or FirmInternational ClassesE04H 003/16E04H 003/18 AbstractAn automatic sensor system for detecting and adjusting a level of contents held within a reservoir is disclosed. The system has a sensor probe having a probe housing with opposing ends, an interior cavity that opens through one housing end, and a constantly open air vent aperture piercing the housing proximate the other housing end, included within the housing are lower and upper level detection contacts that communicate information about the detected level to a circuit that signals for a contents delivery source to send additional contents when needed. | |
