|
Match
|
Document |
Document Title |
|
|
5175791 |
Fragrance diffuser having stepped power levels
A fragrance diffuser (100) comprises a housing defining a chamber (116) for holding a fragrance-emitting block (110), a heating element (112) located within the housing, a timing and indicating...
|
|
|
5170040 |
Device for supplying energy to a heated window pane from an electrical network of a motor vehicle
The device for energizing a heating element of a window pane from a direct current network of a motor vehicle includes a converting device for converting the d.c. voltage of the direct current...
|
|
|
5164571 |
Radiant heating apparatus for evaporating water from an aqueous coating
A heating apparatus for use in the process of coating workpieces with an aqueous colored material such as a water-base paint. Radiant heaters are used in a flash-off operation to remove moisture...
|
|
|
5160831 |
Multi-mode control circuit and indicator arrangement for an electrical appliance
A time-based electrical appliance multi-mode control circuit and indicator arrangement which is connected to a power supply and an on and off switch. Upon turning the switch on, power is...
|
|
|
5138136 |
Method, circuit and apparatus for supplying an electrical current to a resistive heating element
The invention relates to a system for processing an electrical power supply signal for a resistive heating element. The circuit provided comprises an a.c. current source, a rectifier and a chopper...
|
|
|
5111028 |
Method and control arrangement for cooking appliances
A cooking appliance is disclosed which has a cooking control system responsive to selection of a given food to be cooked, for indicating the optimum cooking position of the food in the appliance....
|
|
|
5099108 |
Electric control system for liquid heating apparatus of the pulse combustion type
A liquid heating apparatus includes a pulse combustion burner mounted to a liquid vessel and having a combustion chamber secured to a side wall of the vessel and immersed in liquid in the vessel, a...
|
|
|
5094154 |
Electric toaster with time delay mechanism
An electric toaster includes a housing having at least one heating element mounted therein. A source of electric power is selectively connected to the heating element for energization thereof. A...
|
|
|
5088389 |
Household toasters
A household toaster is operated at will asymmetrically, e.g. at one side, or at low power, or so as to keep a toast warm after a given toasting cycle. The toaster has a power control circuit which...
|
|
|
5075537 |
Controlling and monitoring circuit for electrical seat heating means, especially of automotive vehicles
Fast and highly sensitive monitoring of electrical resistance-type heating elements of seat heaters in automotive vehicles is achieved by short-time breaking of the power supply to the electrical...
|
|
|
5072098 |
Electrically heated windshield controller
Electrical power for an electrically heated vehicle windshield is controlled by an arrangement utilizing a modified alternator coupled to the windshield heater via an autotransformer. In a high...
|
|
|
5070229 |
Window heater controlling apparatus providing a gradual heating voltage
In a window heater controlling apparatus used in an automobile, a heater control unit including a microcomputer is employed to detect a heater-ON condition and thereafter to control the heating...
|
|
|
5064998 |
Relay control apparatus
A relay control for a cooking appliance having a heating element includes a sensor for detecting the occurrence of an arc upon a change of state of a relay coupled between the heating element and a...
|
|
|
5063284 |
Heating cooker with temperature control system
A heating cooker comprises a heating lamp for emitting infrared rays to heat an object to be heated; a temperature detector for detecting an ambient temperature around the heating lamp, and...
|
|
|
5053605 |
Device for thermal regulation of an enclosure
In a device for thermal regulation of an enclosure comprising a temperature-measuring circuit which consists of a resistor bridge, of at least one heat-sensitive element on one bridge arm and of an...
|
|
|
5053604 |
Process and device for control of electrical resistors, particularly for an industrial furnace
A process and device for controlling heating of a furnace by means of electrical resistors using switching devices, particularly thyristors, associated with the electrical resistors, and whose...
|
|
|
5051562 |
Temperature controlled fluid circulating system
A temperature control system for use with a fluid circulating system operable in a heating or cooling state to monitor and control the temperature and flow of fluid circulated through a remote...
|
|
|
5043560 |
Temperature control of a heated probe
A method and apparatus for precisely controlling the temperature of a heated tip are disclosed. The temperature of a thermocouple within the tip is sensed at a selected rate. The sensed temperature...
|
|
|
5040724 |
Electronic control system for an oven
An electronic oven temperature regulator employing a comparator to control energization of a relay for cycling the oven heating unit (gas or electric) in response to comparison of an oven...
|
|
|
5039842 |
Mold heater moisture detection and dry out apparatus
Plastic mold heater moisture detection and dry out apparatus for detecting the presence of moisture in the plastic molding heaters and for drying out the heaters. The plastic mold heater moisture...
|
|
|
5038676 |
Electric deep fat frying system
An Improved Deep Fat Frying System is disclosed which utilities heating elements controlled by triacs operated in the zero voltage switching mode by a programmed digital processor which can be used...
|
|
|
5039838 |
Cordless iron having a heater whose temperature is controlled by using pulse signal
In the cordless iron assembly, an iron (10) includes a base (11), a heater (12) for heating the base (11), a thermosensitive element (13) for sensing the temperature of the base (11), a temperature...
|
|
|
5038020 |
Circuit for controlling the output of an electronic cooking system
There is disclosed a circuit for controlling the operation of an electronic cooking system. The circuit comprises a counting inverter for controlling the operation of heating coil, and a pulse...
|
|
|
5036181 |
Method and apparatus for supplying and controlling power to a resistance furnace
Power is controllably supplied to a resistive load. Power is passed from a power supply through a selectably operable switch directly to the resistive load and simultaneously to an energy storage...
|
|
|
5026971 |
Temperature control system for a heating oven using a glass-ceramic temperature sensor
A temperature control system incorporating a temperature sensor characterized by thermal inertia which causes the sensed temperature to lag the actual temperature during the transition from one...
|
|
|
5025134 |
Means for refreshing a triac control circuit power supply
An electronic controller comprising two input terminals between which an AC line and an electrical load are connected in series. A processing unit generates a command signal to control the supply...
|
|
|
5023431 |
Linearized thermal feedback circuit and temperature controller circuit utilizing the same
A temperature controller for a thermal system comprises a linearized feedback loop. A linearized thermistor and heating element are disclosed. A current source adjusts the bias current of the...
|
|
|
5021634 |
Temperature controlled soldering iron employing a variable resistance heating element for temperature sensing
A temperature controlled soldering iron with a heating element having a positive temperature coefficient arranged as one leg of a Wheatstone resistance bridge such that the voltage across the...
|
|
|
5006695 |
Process controller including power level control and method of operation
An apparatus for controlling a heating element for heating a substance in accordance with a maximum power which is to be applied to the heating element and in accordance with a selected temperature...
|
|
|
5003161 |
Combination of an igniter for a gas furnace and a control unit therefor
The combination of a heating element and a control unit therefor and methods of making and of operating the same are provided, the heating element normally being adapted to be operated by the...
|
|
|
4994651 |
Solid state temperature dependent direct voltage interrupter for a heater circuit
A temperature limiting device for connection across a common heater which senses the critical temperature of the heater to trip circuit breakers and thereby disrupt power to the heater when the...
|
|
|
4990752 |
Controllable electric heater
The present invention relates to controllable electric heaters, in particular heaters employing tungsten halogen lamps and suitable for use in cookers of the type having a ceramic hob below which...
|
|
|
4983811 |
Auxiliary electronic temperature control system for oven
An auxiliary control system for an oven or similar device that is separate from the primary control circuitry and operates independently when the condition occurs that could be hazardous or unsafe....
|
|
|
4978838 |
Device for electronic control of the supply of a heating resistance
Electronic control device of the electrical supply of a heating resistance (1) adapted to heat a cooking or grilling enclosure (2) such as, for example, the heating enclosure of a toaster. A...
|
|
|
4970373 |
Electronic temperature control system for a tankless water heater
A closed loop, electronic temperature control system for a tankless water heater. The control system incorporates error range comparison circuitry for comparing the difference between a water...
|
|
|
4962300 |
Preheating control apparatus for diesel engines
A preheating control apparatus for diesel engines of the present invention is provided wherein the voltage developed across a sensing resistor connected in series with a glow plug, which voltage is...
|
|
|
4958062 |
Driving control apparatus for an electric range with self-diagnosis function
A driving control apparatus for an electric range having a function of self-diagnosis by detecting a temperature within an oven with a voltage, detecting the present temperature within an oven by...
|
|
|
4950872 |
Control circuit for a source of heat
The present system includes a bridge circuit (with four legs) with one leg including a heating element. The mid-points of the bridge circuit are connected to a silicon controlled rectifier (SCR)...
|
|
|
4945210 |
Card controlled soldering iron temperature control device
A card controlled temperature control device for soldering iron in which only a specific person can set and control the tip temperature of the soldering iron. The device comprises a card having a...
|
|
|
4943706 |
Method and apparatus for fusing thermoplastic materials
An apparatus and method for attaining fusion temperature at substantially the same time throughout an interface between thermoplastic articles by the controlled application of heat. The method...
|
|
|
4939347 |
Energization control apparatus for glow plug
An energization control apparatus for a glow plug includes a battery, a glow plug, a power control unit, and an energization controller. The glow plug has a low rated voltage which allows rapid...
|
|
|
4935606 |
Method of operating gas furnace igniter
The combination of a heating element and a control unit therefor and methods of making and of operating the same are provided, the heating element normally being adapted to be operated by the...
|
|
|
4935601 |
Automatic control circuitry for an electrode boiler humidifier
A humidifier boiler has a plurality of electrodes supplied with electric current through circuitry which includes at least one solid state switch or relay such as inverse parallel thyristors or...
|
|
|
4935600 |
Soldering apparatus with one or more temperature controlled soldering irons
A soldering apparatus comprises at least one soldering iron (19) with a heating element (21) and a regulating circuit including a temperature sensor (22) for regulating the working temperature of...
|
|
|
4933535 |
Piecewise linear temperature controller utilizing pulse width modulation
A temperature controller utilizes a square wave signal whose pulse width is incrementally stepped in variable increments by a variable count in a register to determine the temperature being read by...
|
|
|
4929815 |
Heating resistor driving circuit which suppresses current spikes
A heating resistor drive circuit includes a first switching transistor, connected in series to the resistor, for connecting and cutting off a current flow supplied from a power source to the...
|
|
|
4926025 |
Electrically heated seat resistive heating element energization system
A control for a resistive heating element embedded within a motor vehicle seat. A transistor is biased into conduction to energize the heating element when the temperature of the element is below a...
|
|
|
4922081 |
Control system and method of making the same
A control system and method of operating the control system are provided, the system having a supervisory circuit for detecting failure of the system and disabling a high energy control circuit of...
|
|
|
4906820 |
Temperature control method and circuit for controlling the temperature in a heatable compartment of an appliance
The invention relates to a temperature control method and to a temperature control circuit. In a measured value detecting member (2) a measuring voltage (U TH ) is generated which is representative...
|
|
|
4902877 |
Power control for multiple heating elements
A power control arrangement for controlling the power output of a plurality of resistive heating elements (9a, 9b) comprises a multi-position switch (S1, S2) for connecting the heating elements in...
|