Match Document Document Title
4542283 Electrical heat loss control for building perimeter employing plural heaters  
A perimeter heat loss control system for electrical heaters and/or radiant ceiling panels around the periphery of a building has the heaters divided into zones, usually one zone for each outside...
4540875 Electric storage heater system having charging control that transmits charging information over power lines  
Apparatus which can control a remotely-located electric storage heater from a central location without requiring control wires between the central location and the remote location is disclosed....
4512133 Device for sterilizing a thermoplastic strip used for the hot-forming of sterile containers and sterile packaging installation using the device  
An apparatus for sterilizing a thermoplastic strip moving forward stepwise and used in the production of hot-formed containers which, after forming, are filled and sealed in a sterile atmosphere,...
4513196 Electric self-defrosting windshield heating arrangement providing fast or slow heat  
An electrically heatable self-defrosting windshield has a transparent panel, two low-resistance groups of wires embedded in the panel and defining a primary zone requiring rapid heating, and at...
4511789 Heating element, particularly radiant heating element for heating glass ceramic plates  
An electrical radiant heating body has two concentric heating zones with independently operable heating resistors. On only switching in the central zone, the associated heating resistor has a very...
4511791 Electronic balance meter  
The bushing temperature measurement device is a microprocessor based sensor which determines the temperature across a multi-segment electrical resistance heated glass fiber producing bushing. The...
4506516 Refrigeration unit compressor control  
A method and control system for operating a refrigeration unit to permit random loading and unloading sequences of multiple compressors and unloaders. The random loading and unloading sequences of...
4506146 Wire temperature controller  
A method and apparatus are described for controlling the temperature of a heated wire, such as on a wire sealer for plastic film. Temperature control is based upon measurements of changes in the...
4459465 Thermostatically controlled electric instantaneous fluid heater  
An instantaneous fluid heater having a combined safety shut-off and temperature regulator includes a hollow heater block having a fluid inlet, a fluid outlet and inner walls defining a plurality...
4455480 Rice cooker-warmer  
The output of a first bridge circuit including as one component element a thermistor for detecting the temperature of a pan is compared with a preset value in a first operational amplifier. The...
4447712 Heating system  
A system for space heating a dwelling, office and the like having a plurality of heating means and having a control mechanism for sequentially actuating said heating means to actuate only one said...
4446359 Peak load control for an electric heating system  
A peak load control apparatus with operating mode selection for an electric heating system having a plurality of electric heating units arranged in two or more groups in different rooms is...
4441014 Electric soldering iron temperature adjustable by changing handle position during use  
A temperature-adjustable electric soldering iron manipulable with a single hand to change the temperature of the iron comprises a handle, a circuit board, a Nichrome tip heating wire, a cover for...
4439931 Control means for a drier  
Control means for a drier for films or sheets using a minimum of electric power. A heater is connected to a semiconductor switch and an alternating-current power supply in series. An oscillator...
4441015 Cooking apparatus employing a rotisserie mode with stationary food  
A novel cooking oven provides a plurality of elongated heating rods which are parallel to one another and surround the foodstuff to be cooked. The rods are energized sequentially by current flow...
4413174 Glow plug duty cycle modulating apparatus  
A control for modulating the duty cycle of diesel engine glow plugs has two heat sensitive, normally closed switches each thermally coupled to a respective positive temperature coefficient (PTC)...
4410794 Switching system for cyclic supply of electrical power to a plurality of loads  
A switching system for sequential connection of a plurality of loads to an alternating current supply comprises a computer for generating switch selection data in the form of serial bits along a...
4380698 Multiprocessor control bus  
A control arrangement for a multifunction appliance such as a cooking appliance wherein the control activity is distributed among a plurality of microprocessor based control circuits. In the...
4362949 Load controller having time integrated demand  
A load controller, primarily intended for use in systems having geographically distributed, energy utilizing loads, and employing stored energy heating apparatus. The controller (1, 10) disclosed,...
4357525 Glow plug duty cycle modulating apparatus  
A control for modulating the duty cycle of diesel engine glow plugs has two heat sensitive, normally closed switches each thermally coupled to a respective positive temperature coefficient (PTC)...
4348582 Communication via an electricity supply main  
Control signals are transmitted through a.c. mains supply lines to control operation of electrical equipment powered from the supply lines. A near short-circuit condition is introduced across the...
4343987 Electric boiler  
An electric boiler includes a conductivity control having a controller responsive to both steam pressure and electrode current. The controller is operative to open a boiler feed water discharge...
4337389 Glow plug control device for diesel engines  
A thermal device for controlling the temperature of glow plugs in a diesel engine in which current is applied to the glow plugs from the battery through a relay, the relay in turn being actuated...
4334147 Power control for appliance using high inrush current element  
A power control arrangement for controlling the power output of a resistive heating element of the type having a fast thermal response time and a highly variable resistance with temperature. The...
4333002 Multiple device control apparatus  
A step controller for a water heater having a plurality of individual electrical heating elements changes the number of energized elements to maintain a predetermined minimum temperature. A...
4329568 Apparatus for heat treatment, particularly the asepticization, of contact lenses  
An apparatus for heat treatment (particularly asepticization) of contact lenses. The apparatus comprises a box having a housing adapted to receive a case for contact lenses and includes an...
4327278 Simplified multiple speed hair dryer  
A simplified four heat, two speed hair dryer is provided having a housing with a plurality of heating elements mounted therein and a fan driven by a motor for blowing air over the heating elements...
4321457 Method and device for the burning of an artificial carbon body, especially of an anode for the aluminum fusion electrolysis  
An apparatus to burn carbon bodies has at least two independently controllable electric resistance heating circuits, at least two temperature sensors and a comparator. Two or more regions of a...
4316078 Food serving system  
An energy saving food serving system for rethermalization of the food and for delivery prepared meals to locations remote from the place of preparation, such as to patients to hospitals and...
4315140 Energy saving dishwasher  
A control circuit for a dishwashing machine to economize its energy consumption and usage. In order to conserve energy, the dishwashing machine has a control system for automatically actuating the...
4313052 Cooking unit  
A cooking unit comprises at least two electric cooking plates, for example four such plates. Each plate can have a pair of electrical heating resistances. Power is supplied to each cooking plate...
4312307 Glow plug duty cycle modulating apparatus  
A control for modulating the duty cycle of diesel engine glow plugs has two heat sensitive, normally closed switches each thermally coupled to a respective positive temperature coefficient (PTC)...
4307284 Electric space heater unit utilizing incandescent lamps as the heat source  
An electric space heater unit includes a casing having front, rear and end walls providing an enclosure. An imperforate copper heat collector plate is disposed within the enclosure intermediate...
4305005 Load controller  
A load controller, primarily intended for use in systems having geographically distributed, energy utilizing loads, and employing stored energy heating apparatus. The controller (1, 10) disclosed,...
4302663 Control system for a heater  
A space heater having two heating elements and a motor/fan combination for circulating air over the heating elements to supply heated air to an environment includes a system for controlling the...
4292502 Helicopter deicer control system  
A helicopter deicing control system (10) is provided for selectively distributing D.C. electrical power to a plurality of deicing segments (80, 90) on main and tail rotor blades with only two...
4282422 Power control for appliance using multiple high inrush current elements  
A power control system is disclosed which controls the power output of one or more resistive heating elements in response to operator selected power level settings. Control of power to the...
4276603 Diffusion furnace microcontroller  
An automatic microprocessor-based control system for a diffusion furnace in which the controller is dedicated to a single associated diffusion tube to provide all monitoring and control functions...
4267430 Dual-voltage electric hair curling apparatus and vanity case therefore  
A dual-voltage electric hair curling apparatus includes a having a handle and a heated barrel. A pair of positive temperature coefficient (PTC) heating elements are located in the barrel and are...
4256127 Hair waving appliance with infrared heaters and an ultrasonic atomizer  
A hair waving appliance of the type having a hood assembly includes a plurality of independently controllable heating means such as infrared heaters or lamps valves each disposed to heat a...
4256951 Repetition rate power control for appliance using high current inrush elements  
A power control system is disclosed for controlling the power output of a resistive heater element in response to operator selected power level settings by varying the rate at which a power pulse...
4246466 Electric heat storage apparatus  
An apparatus for storing electrically generated heat includes a sealed container holding a bed of fusible heat storage medium, such as an alkali metal hydroxide composition, and having an...
4242554 Effective time ratio browning in a microwave oven employing high thermal mass browning unit  
A time ratio control system for a microwave oven including a food surface browning system of relatively high thermal mass and operated from a limited power source. It is recognized that, since...
4238670 Method and device for regulating the cleaning temperature of an oven  
Regulation of the temperature of a pyrolitically cleaned cooking oven during cleaning to avoid local overheating of the oven base plate enamel. A heating-up power level is used until near the...
4237369 Wild stress relief power supply apparatus  
Temperature responsive power supply apparatus for electrical resistance heating, e.g. for weld stress relief, has a power supply transformer comprising first and second secondary windings in...
4227062 Optimum time ratio control system for microwave oven including food surface browning capability  
An optimized time ratio control system for a microwave oven including a food surface browning system. The system is particularly useful where the available power is insufficient to operate both...
4215268 Circuits primarily intended for use in desoldering tools  
Two different types of circuits, the first a coil operation circuit and the second an operating circuit can be effectively used together in connection with an assembly such as a desoldering tool...
4210827 Control circuit for generating a step-type control signal and a continuously varying control signal whose amplitude characteristic repeats at the step transition  
A control circuit uses an adjustable resistance to generate a first control signal whose amplitude varies with the setting of the resistance and a second, step-like control signal whose level...
4205292 Electric time switch  
An electric time switch mechanism is provided comprising a plurality of units each having an operating thermal expansion member, for example, a bimetallic member. Electrical heating means are...
4198553 Combination oven fully utilizing the capability of a limited power source  
A cooking oven having both microwave and electrical resistance heating means and which fully utilize the capabilities of a limited-capability power source to achieve the shortest possible cooking...