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| Number | Title | Issue Date |
| 7217122 | Candle wick snuffer The candle wick snuffer is mounted on a baseplate which is at the bottom of the candle. The baseplate carries a swing arm which is released when the temperature rises to critical point in the bottom of the candle. The baseplate may also carry a wick retainer to main... | 05/15/2007 |
| 7170284 | Blade detection sensor having an active cooling system A passive blade detection sensor exploits the electrically conductive trait of typical turbo machinery components such as fan, compressor and turbine blades. A permanent magnet is placed strategically adjacent to a wire coil to generate a single pulse/antipulse sign... | 01/30/2007 |
| 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 |
| 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 |
| 6895952 | Appliance end fitting An appliance end fitting for connecting a gas operated appliance to a pressurized gas cylinder includes a simplified interior valve that acts as both a thermal valve and an excess flow control valve. The end fitting has an elongated body formed in two telescoping se... | 05/24/2005 |
| 6595201 | Safeguard for furnace draft system A draft safeguard apparatus for use in a multi-poised furnace having an inducer housing for receiving flue gases from a heat exchanger. The furnace flue pipe is attached to the inducer housing by an elbow that is rotatably connected to the inducer housing... | 07/22/2003 |
| 6390806 | Pneumatic system for flame rollout and draft safeguard protection A furnace is provided with a flame rollout protection system which operates through an existing excess-air control pneumatic circuitry to shut down the furnace in the event of a flame rollout condition. A fusible tube is attached at its one end to the pne... | 05/21/2002 |
| 6305369 | Safeguard for furnace draft system A draft safeguard apparatus for use in a multi-poised furnace having an inducer housing for receiving flue gases from a heat exchanger. The furnace flue pipe is attached to the inducer housing by an elbow having a first linear inlet section that is rotata... | 10/23/2001 |
| 6254380 | Device for preventing flareup in barometric-type liquid fuel burners by preventing excessive temperature levels at removable fuel tank A safety device for preventing uncontrolled burning in barometric-type liquid fuel burners of the type where a removable fuel tank (60) feeds a fuel chamber (40), which supplies the fuel to a wick (54), via a sump opening in the upper surface of the chamb... | 07/03/2001 |
| 6244856 | Burner assemblies A burner assembly includes a number of gas burners each utilizing a radiant ceramic plaque, the burners are disposed in confined combustion chambers where they direct heat towards a heat-receiving surface so that by this arrangement the plaque receives a ... | 06/12/2001 |
| 5586719 | Control system for a hot water tank construction, control device therefor and methods of making the same A control system for a hot water tank construction, control device therefor and methods of making the same are provided, the control system comprising a switch unit that has a portion thereof disposed remote from a housing of a control device and in a pos... | 12/24/1996 |
| 5402603 | Flapper plate detonation flame arrester A detonation flame arrester device including a left and right housing assembly containing two flapper plates positioned one in either side of the housing assembly and separated by a channeled barrier in the form of a stacked plate flame arrester designed ... | 04/04/1995 |
| 5122054 | Device for stopping a radiant burner automatically in the event of ignition The invention provides a device for shutting off a gas or air/gas mixture supply port of a radiant burner so as to cause it to stop automatically in the event of ignition at the rear, this device being of the type comprising a deformable temperature-detec... | 06/16/1992 |
| 5039006 | Home heating system draft controller A forced air heating system having a dedicated supply duct for delivering heated air to the heated portions of the building and having an open air return system which uses the rooms, hallways, door openings, etc. of the building for returning air back to ... | 08/13/1991 |
| 4631024 | Catalytic combustion device A catalytic combustion device of the type including a catalyst for oxidation of a fuel vapor and air, and an ignition heater for initiating oxidation on the catalyst is disclosed. The device comprises a tubular first member carrying thereon the catalyst f... | 12/23/1986 |
| 4619602 | Fail safe automatic flue damper mechanism The present invention is an electronically controlled, automatically operated flue damper mechanism which is totally fail safe in operation. The mechanism is to be fitted within the draft hood of a thermostatically controlled heating device such as a gas ... | 10/28/1986 |
| 4437829 | Roll-out flame detector for swimming pool heater fuel gas control A roll-out flame detector mounted proximate to the lower edge of the outside of the flame wall between the combustion chamber and the control chamber of a swimming pool heater. The flame detector includes an elongated thermal fuse element exposed to poten... | 03/20/1984 |
| 4417869 | Flame rollout condition safety device for a combustion system A safety device is disclosed for detecting a flame rollout condition at the burners of a combustion system and for shutting down the system in response thereto. The invention consists of using sections of the insulated leads, which are used for transmitti... | 11/29/1983 |
| 4401425 | Safety switch for a combustion system This invention relates to a method and apparatus for shutting down a combustion system when a pressure greater than atmospheric pressure is present in the flue pipe of the system. The apparatus comprises a connector means for connecting the flue pipe of t... | 08/30/1983 |
| 4251024 | Automatic vent damper An automatic vent damper for combustion devices such as furnaces which closes the combustion chamber exhaust vent when the furnace burner is off to conserve heat and prevent backdrafts. A damper blade pivotally mounted in the exhaust vent is closed by an ... | 02/17/1981 |
| 4102629 | Exhaust stack damper control In a fuel-burning device having a combustion chamber, a burner with a control, an exhaust stack connected to said chamber, an air diverter in said stack and a thermostat connected to said burner control; the improvement which comprises a damper section in... | 07/25/1978 |
| 4089632 | Fuel control safety apparatus A thermocouple is connected to a fuel control valve which automatically feeds fuel to the burner of a gas or oil appliance when activated by a current generated by the thermocouple due to heat produced by the burner. A fusible link safety device having an... | 05/16/1978 |
| 4088436 | Gas distribution system In combination with a plurality of gas burning appliances and a gas source therefor, a gas distribution system having a main feed line connected at one end thereof to the gas source, a manifold feed means having a single inlet connected to another end of ... | 05/09/1978 |
| 4035134 | Electronic valve seat leak detector An automatic fuel ignition system which provides automatic detection of a leak condition for a pilot valve which is operable to supply fuel to a pilot burner for ignition to establish pilot flame and a main valve which is operable to supply fuel to a main... | 07/12/1977 |
| 3985493 | Cigarette lighter with automatic gas shutoff A lever formed at least partially as a bimetallic strip engages between the cover and the burner-valve of a gas-type cigarette lighter. When the cover is lifted this lever automatically opens the valve and forms a gas jet that may be ignited with the stri... | 10/12/1976 |
