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4994652 Device for controlling the heating output of the heating element of a cooking or heating plate  
A control device for controlling the heating capacity of the heating element of a cooking or heating plate, on which a cooking vessel, roasting vessel, or the like, can be placed and heated. 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...
4973933 Dual control infinite switch  
An integral infinite switch is provided for controlling a first coil and a second coil of a radiant heating element. The integral infinite switch includes a first switch assembly for opening and...
4958055 Control circuit for a refrigerator combined with a microwave oven  
A control circuit for a refrigerator combined with a microwave oven includes signal delay selecting and comparing circuitry start sensing circuitry timer circuitry and load driving circuitry in...
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...
4920252 Temperature control method for distributing power to a plurality of heating elements  
A temperature control method is provided which is capable of carrying out a more efficient temperature control through an impartial starting of a plurality of temperature control objects such as...
4912300 Control device for heating appliance having two operating regimes  
The control device (25) comprises a thermostat (15) interconnected between a supply source (S) and a heating resistor (4) which comprises two heating elements (41, 42), one of which (42) is...
4908498 Control for delivery of power to heating elements  
The invention relates to a control and switching apparatus for electric heating, comprising a micro-processor-based operation control unit (2) provided with control switches, and a regulating...
4902878 Data entry and control arrangement for an appliance  
An improved data entry and control arrangement for an appliance which includes an electronic display having a plurality of digits. User actuable up and down keys enable the user to adjust the...
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...
4874929 Toaster oven/broiler with continuously energized indicator  
A toaster oven/broiler is provided with a visual indicator which is continuously illuminated when the device is in the toast, oven or broil mode. The indicator is not extinguished when the device...
4874926 Electric heating load management control  
A low cost system for permitting the remote load management control of electrical residential room heating units that is compatible with existing heating systems of the type wherein each room...
4862225 Power supply sequencing circuit for flash fuser  
A fusing system for a xerographic printer in which the energy from a plurality of flash lamps is used to melt and fuse toner particles to paper sheets as said sheets travel through the fusing...
4851646 Electric sauna stove  
A combined electric sauna stove and sauna room heater having a plurality of electrical resistors and electrical circuitry for controlling the current supply to the resistors. In order to eliminate...
4849701 Method of testing the function of load resistors connected in parallel  
Load resistors connected in parallel in a heating circuit having switches operable to connect and disconnect the resistors from a common supply line for heating a plurality of zones to maintain...
4847722 Refrigerator and microwave oven and overdemand interrupt circuit  
A microwave oven and a refrigerator are combined into a single cabinet housing a shared power supply with an electrical supply disconnect for the magnetron of the oven during a start-up power...
4829162 Maintenance of uniform optical window properties  
Uniform electrical heating of a circular, single crystal germanium window (18) uses its bulk resistance and pairs of electrodes (20) equally spaced about the window's periphery. The electrode...
4829159 Method of optimizing control of plural switched electric loads to reduce switching transients  
A method of controlling several clocked loads controllable individually and independently of each other, more particularly heating loads of an electric oven, for minimizing the demand on an...
4798927 Combined microwave and electric oven with intermittent power supply to both microwave and electric heating elements  
A microwave oven includes a heating chamber in which food is heated, a high frequency heating circuit for supplying high frequency energy to the heating chamber, a thermal heater provided in each...
4786799 Power control for cooking appliance with multiple heating units  
An improved electric cooking appliance with a plurality of heating units arranged in two groups, a first group adapted for energization by a first AC power signal and a second group adapted for...
4774526 Fault detection circuit for a thermal print head  
A thermal printer with a fault detection circuit for detecting faults in heating elements of the printer includes a print head containing heating elements and a heating circuit for each heating...
4737617 Power control for cooking appliance with transient operating modes  
A power control system for operating a heating element in a cooking appliance in response to the selection of one of a plurality of user selectable power settings. Approximate heating element...
4737615 Energy saving control circuit for hot water heater  
A hot water heater having upper and lower electric heating elements and associated thermostatic switch controls in their electric circuits is provided with an energy saving control circuit for...
4723068 Electric power control device in an automatic temperature adjusting apparatus  
An electric power control device is composed of plural resistor loads (10 -14) the heat-generating powers of which are different from one another, switch means (30 -34) connected in series to each...
4713525 Microcomputer controlled instant electric water heating and delivery system  
A microcomputer operates in response to user selected flow rate and water temperature inputs to calculate the temperature difference between the cold water input and the hot water delivery output...
4711988 Electric hair dryer with multi-mode switch for air temperature and flowrate control  
A hair dryer including a blower for selectively generating a current of air at various flow rates, a thermostatically controlled electrical heater for selectively heating the current of air at...
4705935 Heated socks  
A heated sock (14 or 16 of FIG. 1) for keeping the wearer's foot warm in a cold environment and including a resistive heating unit (10 or 12) secured in two of the socks, a battery source (76 FIG....
4695708 Electric cooker  
In the case of an electric cooker with at least two electric hotplates having several heating resistors and controlled via separate power control devices, one hotplate has a high power additional...
4687163 Railway switch control system  
A control switch system for a railway switch heater with an environment probe near the switch and controlling switching on and off of the switch heater in a predetermined mode.
4687910 Circuit for controlling and displaying cooking states of a rice cooker  
A circuit for controlling a rice cooker has at least one heater used for heating a cooking pot. This circuit comprises a temperature detection element capable of detecting the temperature of the...
4675509 Heating device for appliances for gluing sheet-like textile articles  
The heating device for an appliance for gluing sheet-like textile articles has several heating regions (23, 24), the electrical heaters (25) of which can be switched on or off individually. To...
4661684 Asphalt heating system  
An asphalt heating system is comprised of a fuel fired, flue type tank heater, a heat transfer oil system for heating the oil circulated through the plant, and an electric booster heater for...
4659905 Electric blanket  
An electric blanket for a person with arthritis and circulatory problems in their legs is provided having a control switch which is located at the top of the blanket for controlling an upper...
4657572 Bushing balance controller and method for using same  
The bushing balance controller is an electronic device which measures the voltage drop across each segment of a multiple segment glass fiber forming bushing and measures the current flow in the...
4638147 Microprocessor controlled through-flow electric water heater  
A through-flow electric water heater has a cannister through which water to be heated flows and in which are disposed a first heating means comprising a plurality of electric heating elements and...
4634843 Dual mode power control arrangement for cooking appliance  
A power control arrangement particularly applicable to a multiple surface unit cooking appliance providing a griddle heated by the combination of a standard surface unit and an automatic surface...
4634842 Diagnostic testing arrangement for an electric cooking appliance incorporating commutated relay switching circuits  
A power control and diagnostic arrangement illustratively embodied in an electric range having multiple surface heating units which are selectively coupled to an AC power supply by commutated...
4633067 Touch control arrangement for an electrical appliance  
An improved touch control circuit arrangement for electrical appliances having one or more electrical loads to be individually controlled in accordance with user selected power settings. Each load...
4617453 Thyristor controlled power source for gradually decreasing loads  
A heating power source device includes a pair of loads connected to a secondary side of a power source transformer by way of four thyristor units. Each of the thyristor units includes pair of...
4604518 Display arrangement for cooking appliance with power control using heater energy counter  
A display arrangement for a cooking appliance using a heater energy counter based power control system which provides a user discernible signal signifying that the appliance heating element has...
4604515 Tankless electric water heater with staged heating element energization  
A tankless electric water heater includes a housing provided with a plurality of separate serially connected heating chambers defining a water flow path from a cold water inlet port to a heated...
4600124 Controlled temperature hot melt adhesive dispensing system  
A controlled temperature hot melt adhesive dispensing system including three closed loop temperature control arrangements along a flow path for hot melt adhesive extending from an upstream...
4599507 Temperature control system for a blackbody furnace  
In a blackbody furnace comprises a furnace provided with at least one aperture at an end along a horizontal direction with the interior thereof being hollow and a polyhedral heating unit is...
4588875 Multiple load control apparatus with load equalization  
A step controller for a water heater includes a plurality of individual electrical elements to maintain a predetermined minimum temperature in accordance with a sensed temperature signal and a...
4580061 Time switches  
A time switch (100) comprises terminals (110) spaced around a slip ring (108) connected to a voltage source (V). A motor (104) drives a brush (102) to sequentially connect the terminals (110) to...
4564733 Current limiting control circuit for induction range  
The provision in a range having an electrically energizable heating unit and a control for selectively causing energization of the heating unit from a power supply of an improved circuit for...
4560431 Device for gluing sheet-like textile articles  
The device for gluing sheet-like textile articles contains a spreading station (15), a heating station (16), a pressing station (17) and a take-off station (18). The plate-shaped heating zones...
4559441 Method of controlling a space heating system  
A method of controlling a space heating system having a plurality of electrical resistance heaters includes the steps of computing the aggregate number of resistance heaters required to be...
4552102 System for improving the starting of diesel engines in cold weather  
A system for improving the starting of indirect and direct injection diesel engines in cold weather, including glowplugs powered by a source of electrical potential for heating the diesel fuel and...
4551618 Cooking appliance incorporating heater energy counter means  
An arrangement for monitoring the approximate temperature of a resistive heating element selectively energized at a plurality of power levels in response to the selection by an operator of one of...