Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7191796 | Dual outlet air valve The dual outlet air valve is design feature that would greatly enhance the convenience of the standard valve stem design. In order to accomplish this the dual outlet air valve comprises a multi-port design whereby air can be released or injected through more then on... | 03/20/2007 |
| 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 |
| 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 |
| 6543393 | Fire suppressing water heater system A fire suppressing water heater system is provided including a fire suppressing water heater system is provided including a water heater, fire detection means, spray means, and water transport means. The water heater will preferably include a cold water i... | 04/08/2003 |
| 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 |
| 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 |
| 4343364 | Sprinkler head construction A fire extinguisher sprinkler head construction has a fitting adapted to be coupled to a water line and having a passage therein through which water may flow and impinge upon a deflector. The water passage normally is sealed by a closure and a collapsible... | 08/10/1982 |
| 4023164 | Heat detection and alarm system A pressurized source of fluid, either liquid or gas, is supplied through a supply conduit system to a main heat sensitive conduit fabricated from a thermoplastic material and having sealed end portions positioned adjacent a potential source of fire or und... | 05/10/1977 |
