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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8042496 | Hot-water supply system having supplementary heat exchanger Disclosed is a hot water supplying apparatus having an auxiliary heat exchanger. The hot water supplying apparatus comprises: a heat exchanger including an inlet pipe for introducing heating water into the heat exchanger, and first, second, and third heat exchanging... | 10/25/2011 |
| 7814869 | Hot water supply system The present invention provides a hot water supply system using at least two water heaters having versatility to realize switching between a single hot water supply operation mode and a connected hot water supply operation mode of the water heaters and connected oper... | 10/19/2010 |
| 7735458 | Device for dispensing a heated fluid and heating device therefor The invention relates to a device and method for dispensing a heated fluid and an external heating device. The device comprises a supply of fluid, a discharge connected to the supply for drawing off heated fluid, a feed for cold fluid connected to the supply, and th... | 06/15/2010 |
| 7726263 | Water heating and storage system There is provided a water heating and storage system, including a heat-insulated main heated water storage tank for storing hot water. The storage tank consists of top, side and bottom walls, has an inlet for heated water entering the tank at a level below the norma... | 06/01/2010 |
| 7401742 | Fluid circulation apparatus for temporary heating A temporary heating apparatus comprises a portable heat exchanger which transfers heat from a hot fluid circulating in a primary circulation loop thereof to a heated liquid circulating in a secondary circulation loop thereof. The heat exchanger is connectable to a h... | 07/22/2008 |
| 7171923 | Water supply tank unit and heating apparatus having the same The present invention provides a water supply tank unit which can treat water that has leaked when a water supply tank is pulled out so that it does not remain. In the invention, a water supply tank unit which is attached to a high-frequency heating apparatus with a... | 02/06/2007 |
| 6938581 | Supplemental water heater tank and system A supplemental water heater tank and system features a supplemental tank with an inner vessel surrounded by an outer jacket. The space there between is generally evacuated of air so that the inner vessel is vacuum insulated. The supplemental tank includes water inle... | 09/06/2005 |
| 6901886 | Secondary burner for sealed combustion chamber of a gas-fired hot water heater A secondary burner is provided in a sealed combustion chamber of a gas-fired hot water heater. The hot water heater has a support base for supporting it elevated from a floor surface. The sealed combustion chamber is supported over the base under an inner casing of ... | 06/07/2005 |
| 6659048 | Supercharged hot water heater Embodiments of the present invention provide a hot water dispenser capable of heating water to near boiling temperatures (e.g., 205° F. to 212° F.). When water at near boiling temperatures is required, a secondary heating element is activated. The secon... | 12/09/2003 |
| 6283067 | Potable water temperature management system A potable water temperature management system includes a device that produces waste heat and that has a primary purpose other than heating potable water. The waste heat from the device is used to heat potable water in a tank. A heat shedding system is act... | 09/04/2001 |
| 4604991 | Hot water preheater system A secondary heating source is used to preheat the water supplied to a conventional hot water tank. Three two-position valves permit the water from the water supply line to be supplied directly to the hot water tank during part of the year (such as the win... | 08/12/1986 |
