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| Number | Title | Issue Date |
| 7096828 | Self cleaning boiler and steam generator A steam generator boiler for generating steam is connected to a supply conduit for supplying water to the boiler with a supply valve for controlling the supply of water through the supply conduit. A heater supplies heat to the boiler for generating steam with a disc... | 08/29/2006 |
| 6158231 | Temperature regulating system employing thermostatic switching devices to assure safe operation of the system in both hazardous and non-hazardous applications An energy control and transmission system which monitors temperature in piping systems, electronic systems and the like. Energy in the form of a heated or chilled fluid is delivered to the devices and/or regions of interest to maintain temperature conditi... | 12/12/2000 |
| 4787554 | Firing rate control system for a fuel burner A boiler control system utilizing a microcomputer, a memory, and a firing rate control scheme provides a boiler with a more responsive control arrangement. This improved response is accomplished by the firing rate control converting the desired pressure s... | 11/29/1988 |
| 4513909 | Fuel burner control system with low fire hole A boiler control utilizing a pressure sensor is provided that operates the system in the low fire mode if the load is light and can be satisfied in that mode. If the low fire operation is inadequate to hold the load, and the pressure drops, the boiler is ... | 04/30/1985 |
| 4513910 | Adaptive low fire hold control system A boiler control utilizing a pressure sensor is provided that operates the system in the low fire mode if the load is light, and can be satisfied in that mode. If the low fire operation is inadequate to hold the load and the pressure drops, the boiler is ... | 04/30/1985 |
