Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 6920377 | Self-sustaining control for a heating system A self-sustaining control for a heating system, having conventional operational modes and pilot burner assembly, is disclosed. A controller directs operation in accordance with a need-based protocol and monitors the condition of a storage device, which provides syst... | 07/19/2005 |
| 6666676 | Programmable burner for gas stoves A programmable burner for gas stoves, which is constituted by a gas burner and a safety valve that includes a thermocouple, which is located in coincidence with an external edge of the burner. The safety valve is maintained open when the thermocouple is d... | 12/23/2003 |
| 5720607 | Ignitor An ignitor includes a first transistor, a transformer, an ignition member, and a switching control member. The first transistor is activated in accordance with supply from a DC power supply to perform switching. The transformer has a primary winding throu... | 02/24/1998 |
| 5703389 | Vertical IGFET configuration having low on-resistance and method A vertical IGFET configuration includes a stripe arrangement having a non-linear shape. In one example, a stripe arrangement (30) has contact cut-out portions (41) and elongated portions (42). The elongated portions (42) have a width (44) that less than t... | 12/30/1997 |
| 5018964 | Remote-controlled gas barbeque igniting system A remote-controlled system for igniting a gas barbeque unit and the like is shown. The system controls the gas flow to the pilot lighter and the burner of the barbeque unit, and generates a spark to ignite the pilot lighter and in turn the burner. The sys... | 05/28/1991 |
| 4529373 | Burner safety ignition system allowing for electrical and manual operation A system is provided for igniting and monitoring a fuel burning heat source which comprises a thermoelectric safety burner valve, a thermocouple to be heated by a pilot burner, a fuel source feeding fuel to a pilot feed valve and to a main burner feed val... | 07/16/1985 |
| 4519772 | Heating device fed with free-flowing fuel A heating device fed with free-flowing fuel and connected to an on-board voltage source, in particular, a vehicle heater. The heating device is equipped with a burner assembly which has a fuel supply, a combustion air fan and a heating element which ignit... | 05/28/1985 |
| 4515554 | Ignition and fuel supply system for a gas-fueled heat-radiator An ignition and fuel supply system for gas-fueled heat radiators of the type comprising an upstream fuel feed (6), a safety valve (20) in the vicinity of the radiator, a pilot device (27) mounted on the radiator to allow reignition and a feed conduit (4) ... | 05/07/1985 |
| 4455656 | Combustion control circuit A combustion control circuit including semiconductor integrated circuits used for control of a combustor or burner of a water heater, air heater-blower or the like has a very simple configuration for stable initialization against the transient condition o... | 06/19/1984 |
| 4359315 | Apparatus for fuel ignition system including complete cycling of flame relay prior to trial for ignition When a call for heat is established, a flame relay is actuated for a predetermined time by means of a cycling timer. Upon this initial actuation, the flame relay inhibits a checking relay and initializes a trial-for-ignition (or simply "ignition") timer. ... | 11/16/1982 |
| 4298334 | Dynamically checked safety load switching circuit A control logic means or microcomputer controlled burner control system has been disclosed. The system utilizes a safety relay that has contacts that are in series with all of the other loads for the system. The safety relay contacts are checked prior to ... | 11/03/1981 |
| 4298335 | Fuel burner control apparatus A fuel burner control system including a valve for controlling the flow of fuel to a burner, a resistive heater element for igniting fuel, a power supply for supplying current to the heater element, a flame sensing circuit comprising an ac source for supp... | 11/03/1981 |
| 4260362 | Fuel ignition control arrangement having a timing circuit with fast reset An arrangement for a direct ignition type fuel ignition system includes a capacitive timing network which enables a flame relay to operate during a trial for ignition interval, energizing a fuel valve to supply fuel to a burner for ignition, and a flame s... | 04/07/1981 |
| 4257758 | Safety arrangement in a gas operated apparatus A safety arrangement in a gas-operated apparatus, such as an absorption refrigerator, having a safety device that controls the gas system and, when required, automatically re-ignites the flame of the gas burner that has become extinguished. The system has... | 03/24/1981 |
| 4242078 | Centralized automatic pilot/pilotless ignition control system An automatic ignition control system for controlling the pilot burners and main burners of fuel burning appliances so that these burners are ignited only upon demand is disclosed. The system consists of a main control unit which may be interconnected with... | 12/30/1980 |
| 4230444 | Method and apparatus for fuel ignition system including complete cycling of flame relay prior to trial for ignition When a call for heat is established, a flame relay is actuated for a predetermined time by means of a cycling timer. Upon this initial actuation, the flame relay inhibits a checking relay and initializes a trial-for-ignition (or simply "ignition") timer. ... | 10/28/1980 |
| 4194875 | Intermittent pilot ignition system A system for controlling the pilot and main burner gas valves of a gas furnace or the like, including a pilot spark ignitor and a pilot flame sensor. A main burner valve control circuit for energizing the spark ignitor until a pilot flame is sensed and th... | 03/25/1980 |
| 4077762 | Fuel ignition system having contact interlock protection A control arrangement for a fuel ignition system for providing an interlock on start-up to prevent the energization of fuel valves of the system under certain failure conditions includes a switching device which is energized over normally closed contacts ... | 03/07/1978 |
| 4073611 | Control system for gas burning apparatus A control system for a gas burning apparatus having a pilot burner which is initially ignited by electric ignition means upon a need for operation of the apparatus and which in turn ignites a main burner after a flame is established at the pilot burner, t... | 02/14/1978 |
| 4070143 | Fuel ignition system including an igniter providing a lingering spark A fuel ignition system including a control arrangement which provides an interlock on start-up to prevent the energization of fuel valves of the system under certain failure conditions, and an igniter which is enabled when the system is activated to provi... | 01/24/1978 |
| 4025283 | Electrical ignition systems for gas fired equipment Automatic electrical control systems for gas fired equipment. The systems embody electrical ignition. The systems eliminate the need for a constantly burning pilot. In one form, wherein the main burner is electrically ignited the pilot is omitted altogeth... | 05/24/1977 |
