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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 |
| 6964248 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 11/15/2005 |
| 6957628 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 10/25/2005 |
| 6893253 | Fuel-fired heating appliance with temperature-based fuel shutoff system A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a pre... | 05/17/2005 |
| 6814031 | Combustion air shutoff apparatus for a fuel-fired heating appliance A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 11/09/2004 |
| 6776125 | Methods of operating a fuel-fired heating apparatus A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 08/17/2004 |
| 6715451 | Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 04/06/2004 |
| 6497200 | Fuel-fired heating appliance with combustion chamber temperature-sensing combustion air shutoff system A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner s structure within the combustion chamber. During f... | 12/24/2002 |
| 6035812 | Combustion air shutoff system for a fuel-fired heating appliance A fuel-fired water heater has a combustion chamber disposed above a wall ucture forming a flow path for combustion air being drawn into the combustion chamber during firing of the fuel burner portion of the water heater. A combustion air shutoff system i... | 03/14/2000 |
| 4894193 | Method of forming a high-temperature-fluid sensor The sensor is formed with a polymer body which confines electrical conductors, with the conductors projecting from opposite ends of the body. The conductors' projections at one end define terminal blades, and at the opposite end are shrouded with, and ele... | 01/16/1990 |
| 4881055 | High-temperature-fluid sensor The Sensor is designed for use in detecting fire, or high temperature in vessels or pipes pressurized with air, gas or liquids. It has a polymer body which confines electrical conductors, and the conductors project from opposite ends of the body. The cond... | 11/14/1989 |
| 4827962 | Safety valve A hot water system has a aperture in the hot water line normally blocked by a liquid and gas filled vial which is sealed against the aperture to close it off. However, when hot water in the system reaches a predetermined temperature the expansion of the l... | 05/09/1989 |
| 4519778 | Heatable godet The safety outflow device is provided in an end wall of a heatable godet and may be of a fusible type or pressure responsive type. The fusible safety device has fusible material which fills an outflow passage in a hermetic manner so that upon the occurren... | 05/28/1985 |
| 4452184 | Boiler draft control device In order to protect a boiler against overheating a boiler draft control device comprises a safety thermostat in addition to the regular control thermostat. The control thermostat is provided with a supporting tube in order to limit its length reduction in... | 06/05/1984 |
| 4375273 | Combustion automatic control system The invention is with respect to a fail-safe system for stopping damage to water boilers, whose thermostats are not in working order. In an automatic combustion control system of the sort having an elastic thermostat bellows element placed within an outer shel... | 03/01/1983 |
| 3981316 | Pressure and temperature-responsive control means Actuator means of the pressure- and/or temperature-responsive type are disclosed for controlling valve means which supply pressure fluid (such as a combustible gas) to a load (such as a gas-fired boiler), characterized in that the actuator means are opera... | 09/21/1976 |
