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| Number | Title | Issue Date |
| 4415264 | Spectrophotometer gas control system This invention relates to a spectrophotometer which includes a burner adapted for burning a gaseous fuel and for atomizing a sample to be analyzed in a burner compartment, mechanical elements or electrical circuitry serving to periodically pass a beam of ... | 11/15/1983 |
| 4410266 | Method and apparatus for combustion control and improved optical pyrometer related thereto A combustion technique and control is provided by the use of an optical pyrometer by means of which combustion control is afforded in accordance with the inspection of the combustion flame. The preferred optical pyrometer takes the form of an optical pyro... | 10/18/1983 |
| 4406612 | Oil burner primary control for interrupted ignition system An oil burner primary control in an interrupted ignition burner control system includes a regulating circuit for regulating the voltage across a flame-responsive photo-conductive cell. The regulating circuit ensures that, in the event the cell becomes def... | 09/27/1983 |
| 4402664 | Waste oil heater An improved waste oil heater that includes a vaporizer pan having a mounting ring, a replaceable aluminum foil piece mounted on the ring to form the bottom of the pan and a member mounted on the ring to provide threads, a tool threadingly engageable with ... | 09/06/1983 |
| 4395229 | Discharge type ignitor for oil stove An ignitor assembly for oil stoves is disclosed which includes an ignitor plug held in alignment with an exposed portion of a wick for firing the wick through the utilization of discharge originated from the ignitor plug. A light-sensitive element is disp... | 07/26/1983 |
| 4395224 | Burner control system A burner control apparatus for use with a fuel installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, and one or more devices for ... | 07/26/1983 |
| 4370125 | Control system for blue-flame oil burner A control system for fluid fuel burners, particularly for blue-flame oil burners, utilizes flame conduction to control energizing of the light emitting portion of an optical coupler. Circuit means including the light responsive portion of the optical coup... | 01/25/1983 |
| 4370557 | Dual detector flame sensor In a multi-burner boiler or industrial furnace installation that uses pulverized coal for fuel and utilizes an oil pilot torch it has been difficult to sense and discriminate satisfactorily between safe and unsafe burner operation in these multi-burner ar... | 01/25/1983 |
| 4368031 | Stationary flame scanner for tilting burner A flame monitoring system for use on the furnace (10) of a vapor generator (2) employing tiltable burners (14) and particularly on a furnace equipped with tilting burners arranged in accord with the tangential firing method. Each burner is provided with i... | 01/11/1983 |
| 4351316 | Combustion apparatus for burning waste oils Combustion apparatus for burning waste oils of various viscosities with high combustion efficiency and which can meet strict polution regulations comprises primary and secondary combustion chambers with the secondary combustion chamber located above the p... | 09/28/1982 |
| 4321480 | Positive differential alternating current switching means A solid state switching circuit using a capacitive feedback that creates a positive differential. This positive differential overcomes any half-wave operation of the solid state switches caused by lack of symmetry in its gating circuit.... | 03/23/1982 |
| 4278419 | Primary oil burner safety control and intermittent ignition system A primary oil burner safety control and intermittent ignition system for initiating and supervising the combustion of fuel oil in furnaces, the system including thermostatic switch means controlling the energization of a relay having contacts controlling ... | 07/14/1981 |
| 4242081 | Oil burner primary control for interrupted ignition system An oil burner primary control in an interrupted ignition burner control system includes a miniature coupling transformer for controlling operation of the igniter. The gate circuit of a flame responsive switch is effective, in the absence of a burner flame... | 12/30/1980 |
| 4233596 | Flare monitoring apparatus A flare monitoring apparatus for detecting the generation of black smoke in a flare, the excessiveness of a flare and extinguishment of a flare based on the ratio and/or difference between an emissive power of infrared radiation emitted from a flare at a ... | 11/11/1980 |
| 4167389 | Oil burner primary control for interrupted ignition system An oil burner primary control in an interrupted ignition system includes therein circuit means responsive to burner flame for initiating energizing of an ignition transformer in the absence of burner flame and for maintaining energizing thereof for a shor... | 09/11/1979 |
| 4150941 | Photoelectric control device for gas burners A device for photoelectrically starting and stopping the operation of a bunsen burner in response to the shadow of an operator's hand holding an object to be heated includes a solenoid valve in a line supplying gas to the burner and electronic control cir... | 04/24/1979 |
| 4113419 | Burner control apparatus Burner control apparatus includes a control device for actuating an ignition control means, and a timing circuit for providing an ignition timing interval of precise duration. The timing circuit is actuated in response to a request for burner operation an... | 09/12/1978 |
| 4070144 | Control system A control system for a fuel flow control valve which is enabled on thermostatic demand and closed thereafter if ignition fails. The control system includes an enabling circuit for the control valve in series with a controlled switching device and a circui... | 01/24/1978 |
| 4059385 | Combustion monitoring and control system A real time monitoring and control system for single or multi-fired combustion systems which permits adjustment of the air fuel ratio in the system for optimized efficiency and minimized pollution content in the exhaust gas, while providing safety control... | 11/22/1977 |
| 4043742 | Automatic burner monitor and control for furnaces A furnace containing a burner, supplied by fuel to be ignited at the burner, in the presence of air, is provided with a viewing duct for viewing the flame and means for detecting the radiation intensity at a plurality of different wavelengths of the radia... | 08/23/1977 |
| 4043743 | Combustion control system A combustion control system is operated based on the detection of smoke density. A photoelectric device measures the intensity of light directed through the smoke by a lamp in order to measure the smoke density. This measurement is employed to control fue... | 08/23/1977 |
| 4039844 | Flame monitoring system A flame monitoring system includes a flame sensor for producing a flame signal as a function of flame conditions in a monitored environment and flame signal enhancing circuitry coupled to the flame sensor. The flame signal enhancing circuitry has a first ... | 08/02/1977 |
| 4028047 | Photoelectric start-stop controls for gas burner A device for electrically starting and stopping the operation of a gas burner in response to the shadow of the user's hand holding an object to be heated, the device including a solenoid valve in the gas line and a dimmer circuit with a directional photoe... | 06/07/1977 |
| 4024412 | Burner control system with primary safety switch A primary side of a burner control circuit includes a triac switch for applying a line voltage to a burner motor and an igniter in response to a signal from a first optical coupler, and a circuit breaker responsive to a second optical coupler for disconne... | 05/17/1977 |
| 4015927 | Automatic high-low burner operation A method of operating a burner in which fuel and airborne combustible debris to be incinerated are received in a burner while fuel delivered to the burner is decreased in quantity in the absence of debris to be incinerated so that delivery of excess fuel ... | 04/05/1977 |
| 3990835 | Burner for igniting oil shale retort A technique is described for igniting the oil shale rubble pile in an in situ oil shale retort. A gas-air burner is lowered through a hole to a plenum over the oil shale to be ignited. An excess of air is passed through the hole and around the burner so t... | 11/09/1976 |
| 3988104 | Burner control The invention is concerned with a burner monitor comprising a variator which is arranged to cause a predetermined fluctuation of the flow of a reactant to a burner to cause flickering of the burner flame. A detector for radiation from the flame from the b... | 10/26/1976 |
| 3986814 | Device for automatically controlling a gaseous or liquid fuel fired appliance A device for controlling a gaseous or liquid fuel fired appliance as a function of a parameter includes a fuel supply controlled by a valve operated in dependence on a signal furnished by means sensitive to the parameter. The device includes a first circu... | 10/19/1976 |
| 3975137 | Burner control system A burner control circuit in which the flame of a high capacity burner is ignited by a spark or hot wire and ignition is sensed by a photocell positioned outside the flame and controlling a semiconductor current amplifier which controls the current in a se... | 08/17/1976 |
| 3964044 | Multiple operating alarm systems employing oil burner flame monitoring relays An alarm system uses a series string of sensors including burglar, fire and cold detectors in series with a relay coil. The coil when activated, assures that all sensors are indicating a no fault condition and a contact associated with the coil, energizes... | 06/15/1976 |
| 3959697 | Oil burner safety control system with integral ignition A solid state oil burner safety control system with integral ignition and particularly adapted for use with a motor powered oil burner, the system providing intermittent ignition, timed safety shutdown, motor starting capability and automatic restart in t... | 05/25/1976 |
| 3947219 | Burner control with interrupted ignition An interrupted ignition system for a burner control circuit having a primary side which has as its primary function the application of a line voltage to a burner motor and a fuel igniter and a secondary side, which is responsive to a thermostat, and inclu... | 03/30/1976 |
| 3947218 | Safety circuit for monitoring a flickering flame An electronic network for safe operation of an infrared flame flicker burner control system is disclosed. The network is placed across the infrared flame detector and modifies the detector's action in the event of a flameout so that a refractory shimmer e... | 03/30/1976 |
| 3938939 | Burner control system with secondary safety switch The primary side of the burner control circuit, which has as its primary function the application of a line voltage to the burner motor and igniter, includes: a triac switch for applying the line voltage to the burner motor and igniter; in response to a f... | 02/17/1976 |
| 3938940 | Primary control and ignition system for oil burners A solid state primary control and ignition system for oil burners, the system including burner control means, an isolated low voltage control circuit, plasma generator means, combustion initiation means and combustion sensing means, and being effective to... | 02/17/1976 |
| 3936648 | Flame monitoring apparatus A filter having a cut-off frequency of the order of 50Hz is included in the circuit of flame monitoring apparatus to remove signals below the cut-off frequency. In the circuit shown, a silicon p-n junction photo-electric pick-up is capacitively connected ... | 02/03/1976 |
| 3932137 | Burner with automatic high-low operation Burner apparatus in which fuel and airborne combustible debris to be incinerated are received in a burner while fuel delivered to the burner is decreased in quantity in the absence of debris to be incinerated so that delivery of excess fuel in the absence... | 01/13/1976 |
