| ENVIRONMENT ONE CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20110109171 | WATTMETER CIRCUIT FOR OPERATING A GRINDER PUMP ASSEMBLY TO INHIBIT OPERATING UNDER RUN DRY OR BLOCKED CONDITIONS - A method for operating a grinder pump station and inhibiting the likelihood of operation of a grinder pump assembly under at least one of a run dry condition and a blocked condition includes providing a wattmeter circuit operably connected to the grinder pump assembly and measuring real power using the wattmeter circuit during operation of the grinder pump assembly to process sewage received in a tank and discharge the processed sewage from the tank. The grinder pump assembly is automatically turned off based on the real power (e.g., average value of the product of instantaneous values of voltage and current over time) measured by the wattmeter circuit due to the at least one of a run dry condition and a blocked condition. | 05-12-2011 |
| 20080290011 | WIRELESS LIQUID LEVEL SENSING ASSEMBLIES AND GRINDER PUMP ASSEMBLIES EMPLOYING THE SAME - A liquid level sensing assembly employs an inductive or magnetic coupling to wirelessly communicate a plurality of signals based on a changing level of wastewater in a tank to a first coil of a pump/alarm control circuit in the grinder pump. The assembly includes at least one liquid level sensor operable in response to the changing level of the wastewater, a second coil positionable adjacent to the first coil in the grinder pump, and a transponder for extracting electrical energy using the second coil in response to the first coil. The transponder is operably connected to the at least one liquid level sensor and operable to wirelessly transmit from the second coil to the first coil the plurality of signals based on the state of the at least one liquid level sensor due to the changing level of the wastewater in the tank. | 11-27-2008 |
