Class / Patent application number | Description | Number of patent applications / Date published |
219492000 | Comprising timing or cycling means | 26 |
20080203085 | TOASTER WITH SUPPLEMENTAL CYCLE - A toaster has a user selectable supplementary toasting cycle that is intended to change the shade of a food after or during a toasting cycle. | 08-28-2008 |
20080217321 | Temperature limited heater utilizing non-ferromagnetic conductor - A heater is described. The heater includes a ferromagnetic conductor and an electrical conductor electrically coupled to the ferromagnetic conductor. The ferromagnetic conductor is positioned relative to the electrical conductor such that an electromagnetic field produced by time-varying current flow in the ferromagnetic conductor confines a majority of the flow of the electrical current to the electrical conductor at temperatures below or near a selected temperature. | 09-11-2008 |
20090139982 | Power Delivery To Heater Elements - Fuser heater element damage due to excessive heating power is prevented by estimating available power supply heating power for proper power control. The estimate is performed by applying a predefined portion of the heating power available from the power supply to the heater element. The predefined portion is determined so that the heater element will not be damaged even if the power supply is at the maximum voltage level of any power supply that may be encountered. The temperature of the heater element is measured, and, if below a predefined temperature, a heating power estimate is made. If not, the heater element is heated by applying power in accordance with a stored heating power estimate from the last heating power estimate. A heating power estimate is made each time the heating element is heated from a temperature below the predefined temperature. | 06-04-2009 |
20090166351 | SUBSTRATE HEATING DEVICE AND SUBSTRATE HEATING METHOD - A device for heating a substrate with light from a flash lamp having a semiconductor switch connected in series to the flash lamp. After triggering of a trigger electrode of the flash lamp, a first drive signal and a second drive signal are output from a gate circuit. The time period when the semiconductor switch is on due to the second drive signal is longer than the time period that the semiconductor switch is on by the first drive signal. Then, the semiconductor switch is switched on and off by the first drive signal and the substrate temperature is increased to a temperature, which is lower than the desired temperature to be achieved, and is maintained a that temperature for a short time, after which the surface temperature of the substrate is increased to the desired target temperature. | 07-02-2009 |
20100072190 | APPARATUS AND METHOD FOR AUTOMATICALLY SHUTTING OFF A BURNER OF A STOVE OR OVEN - A safety apparatus for a stove or oven and a method of operation thereof. The safety apparatus facilitates the method of turning on a burner of the stove or oven and automatically counting over a time interval in response to turning on the burner. The method further includes automatically stopping a flow of electrical current or combustible gas to the burner in response to the counting reaching an end of the time interval. | 03-25-2010 |
20110017723 | OPERATOR CONTROL UNIT - An operator control unit for operator control of a cooktop comprising at least two cooking zones, with at least one of the cooking zones having two heating rings that can be separately activated. The operator control unit comprises at least one selection element to select a cooking zone, at least one adjusting element, it being possible to adjust a heating power of a selected cooking zone by operating said adjusting element, and a control unit coupled to the at least one selection element and the at least one adjusting element, and which detects operation of the at least one selection element and the at least one adjusting element. The control unit can control at least one of the at least two heating rings of the selected cooking zone in the event of an operating duration in a second time period which differs from the first time period range. | 01-27-2011 |
20110192831 | Mirror and window de-fogging device - The de-fogging device and has an elongated heating element mounted within a housing. There is an elongated opening in the housing beneath the heating element for admission of air below the device and a second elongated opening in the housing above the heating element through which air heated by the heating element flows by convection. The device is mounted to a mirror or window and is positioned such that the heated air flows upwardly across the mirror or window. There is means for regulating the temperature of the heating element such that the heated air prevents any moisture in the air surrounding the mirror or window from condensing on it. | 08-11-2011 |
20110233189 | ELECTRICAL HEATING DEVICE - The present disclosure relates to an electrical heating device for motor vehicles, in particular with electrical propulsion. The heating device uses a PWM based control concept which can be used for heating elements with any non-linear characteristics. In this respect, activation times in a cycle frame are assigned to power stages to be controlled and are stored in a table in a non-volatile memory. | 09-29-2011 |
20110248017 | METHOD AND HEATING SYSTEM FOR HEATING A FLUID LINE SYSTEM, PARTICULARLY IN A MOTOR VEHICLE - A method for heating a fluid line system with at least two electric heating elements (R | 10-13-2011 |
20110253703 | CONTROL SYSTEM AND METHOD FOR HIGH DENSITY UNIVERSAL HOLDING CABINET - A load control system and method of time multiplexing power to a plurality of holding shelves in a food holding cabinet to allow total cabinet power to be limited to electrical distribution capabilities. This method allows for individual shelf heaters to be utilized normally to maintain food temperatures during normal use and modulates power when multiple shelves demand heating that would normally exceed branch circuit capabilities thus tripping the breaker. The system monitors temperature of each shelf and based upon demand executes a logical demand schedule for each shelf heater output (time multiplexing or modulating AC power to each) such that total system demand does not exceed available power to the system. | 10-20-2011 |
20110259872 | NTC/PTC HEATING PAD - A controllable heating pad, having a heating conductor embedded in the heating pad, a sensing conductor embedded in the heating pad, a resistive material providing a distributed electrical path between the heating conductor and the sensing conductor, a first current sensor to sense a current in the heating conductor and a second current sensor to sense a current in the sensing conductor. A method of controlling a temperature of a heating pad, including the steps of: warming the heating pad to at least a first predetermined temperature by use of an adjustable on/off signal to the controllable switch, measuring currents through an NTC material or a combination of a PTC material and an NTC material; and maintaining a temperature of the heating pad to within a predetermined temperature range by use of the adjustable on/off signal to the controllable switch. | 10-27-2011 |
20110278281 | HYPODERMIC NEEDLE DESTRUCTION - Disclosed is an apparatus for processing a hypodermic needle ( | 11-17-2011 |
20110284519 | REMOTE CONTROL DEVICE AND REMOTE CONTROL METHOD FOR WATER HEATER - A remote control device for a water heater includes a processing unit, a relay switch, a voltage measuring module, a current measuring module and a network connecting module. The relay switch is connected to the processing unit and configured to make the water heater connect or disconnect to an external power supply under the controlling of the processing unit. The voltage measuring module is connected to the processing unit and configured to measure a voltage value applied to the water heater, and transmit the voltage value to the processing unit. The current measuring module is connected to the processing unit and configured to measure a current value flowing through the water heater, and transmit the current value to the processing unit. The network connecting module is connected to the processing unit and configured to connect the processing unit to a remote computer. | 11-24-2011 |
20120097662 | DEVICE AND METHOD FOR MONITORING A HEATING APPLIANCE - A device for monitoring a heating apparatus that includes a default deactivated motion detector for determining whether a person is proximate the heating apparatus. The device includes a default deactivated heat sensor for determining whether the heating apparatus has a temperature that is above a threshold. The device includes an internal timer for cyclically repeating a first countdown. The heat sensor is temporarily activated once during each of the repeated first countdowns. The internal timer performs a second countdown when the activated heat sensor determines that the heating apparatus has the temperature that is above the threshold. The second countdown is reset each time the motion detector determines that a person is proximate the heating apparatus. The device includes an alarm configured to notify a user when the internal timer reaches the end of the second countdown. | 04-26-2012 |
20120181266 | CONTROL SYSTEM FOR COOKING APPLIANCE DURING JEWISH HOLIDAYS AND SABBATH - A cooking appliance control system for use during the Jewish Holidays or Sabbath. A timer is in communication with the oven heater element programmed to provide for scheduled activations and deactivations of the element during the Holidays. Prior to the Holiday the timer is programmed, the oven is activated to the predetermined temperature, and the timer program is then activated to provide for activation of the heater element to the predetermined temperature and deactivation in accordance with the schedule during the Holiday. Additionally, a switch selectively activates and deactivates the ignition circuits of the burners. This permits, one of the gas burner heater elements to be lighted by the appliance before the Holiday when the ignition circuits are activated to provide a flame to light the other burners when the ignition circuits are deactivated during the Holiday. | 07-19-2012 |
20120187107 | SYSTEM AND METHOD FOR CONTROLLING QUASI-RESONANT INVERTER AND ELECTRIC HEATING DEVICE EMPLOYING THE SAME - A quasi-resonant inverter control system includes a mains zero-crossing detection circuit and a controller. The mains zero-crossing detection circuit is operable to detect a plurality of zero-crossing points of an input alternating-current voltage and output a zero-crossing detection signal based on the zero-crossing points. The controller is operable to control a plurality of burst mode period and receives the zero-crossing detection signal. Each of the burst mode periods includes a working duration and a non-working duration. Each of the working durations includes a start point and an end point. The controller is operable to determine the start points and the end points of the working durations based on the zero-crossing detection signal and outputs a control signal based on the start points and the end points of the working durations. An electric heating device and a method for controlling the quasi-resonant inverter are also disclosed herein. | 07-26-2012 |
20130134150 | HEATER CONTROL UNIT AND VEHICLE SEAT HEATER - A heater control unit controls electric power supplied to a heater provided in a seat. The heater control unit includes an outside air temperature measuring portion that measures an outside air temperature, a seat surface temperature measuring portion that measures a surface temperature of the seat, and a control portion. The control portion controls a time for which an initial electric power larger than an electric power in a steady state after the initial state is output to the heater, according to the measured outside air temperature and the measured seat surface temperature in an initial state immediately after the heater is activated. | 05-30-2013 |
20130200065 | RF Heating at Selected Power Supply Protocols - Disclosed is an apparatus for applying RF energy to an object in an energy application zone via one or more radiating elements at a plurality of modulation space elements (MSEs). The apparatus may include at least one processor configured to cause supply of RF energy to one or more of the radiating elements in a first subset of the plurality of MSEs, at a first power level common to the MSEs in the first subset and for varying time durations, and cause supply of RF energy to one or more of the radiating elements in a second subset of the plurality of MSEs, at power levels lower than the first power level and for a time duration common to the MSEs of the second subset. | 08-08-2013 |
20130200066 | Methods and Devices for Applying RF Energy According to Energy Application Schedules - An apparatus for applying electromagnetic (EM) energy to an object in an energy application zone via at least one radiating element at a plurality of modulation space elements (MSEs) is disclosed. The apparatus comprises: at least one processor configured to determine an amount of energy to be supplied to the at least one radiating element at a first subset of the plurality of MSEs, determine an energy application schedule comprising timing instructions for applying energy at at least a subset of the plurality of MSEs, and cause application of energy according to the determined amounts of energy and the determined energy application schedule. | 08-08-2013 |
20130319997 | KEEP-WARMING DEVICE WITH TIME CONTROL FUNCTION - A portable keep-warming device with time control function is proposed. A carbon film on a keep-warming sheet of the keep-warming device is mixed with silver so as to have greater resistance. Therefore, a small current will have a sufficient heat generated. Besides, the packaging of the keep-warming sheet with the carbon fiber layer and the metal gluing layer provides a greater heat dissipating area. The different time control modes provides the function of fast heating of the keep-warming sheet and long using time of the battery so as to increase the usages of the present invention. Furthermore, the appearance of the keep-warming sheet can be formed as desired to as to suit different usages of the keep-warming sheet. | 12-05-2013 |
20130334201 | Portable Spa Monitoring And Control Circuitry - Control circuitry for controlling a spa water heater, wherein a microcontroller is configured to detect zero crossings of an A.C. line voltage from a voltage sense signal, to cause closing of a first heater relay and a second heater relay, to detect the time at which heater current is initially sensed by a current sensor after the initial closing of the second heater relay, to measure a time delay between the time that the second heater relay is closed and the time at which heater current is initially sensed, and to adjust the time at which a second closing of the second heater relay occurs such that zero crossings of the heater current occur at the same time as zero crossings of the voltage waveform. The control circuitry further includes a voltage sense circuit comprising a first diode connected in series with a current limiting resistance connected in series with a Zener diode, which is in turn connected in series with an optical coupler LED. | 12-19-2013 |
20140190956 | SAFETY DEVICE AND METHOD FOR ELECTRIC HEATING APPLIANCES - An appliance includes a plurality of electrical loads and a load control circuit including at least a clock enable circuit and a full power timer. The clock enable circuit is configured and operatively connected to activate the full power timer when all of the loads are energized, and the full power timer is configured and operatively connected to de-energize at least one load selected from the plurality of loads on reaching a predetermined full power time limit. | 07-10-2014 |
20140238973 | HEATER CONTROL METHOD AND HEATER CONTROL APPARATUS FOR GAS SENSOR - A heater control method and apparatus for a gas sensor which can quickly activate a detection element while reducing load due to heating even when a higher power supply voltage is applied. A heater element is connected to a power supply whose voltage is higher than 16 V, and power is supplied under PWM control such that a temperature rise of the heater element follows a temperature rise curve obtained when a voltage of 12 V is applied to the heater element. Even though a higher voltage is applied, the temperature rise per unit time during the ON time of the PWM control is decreased. This is because the ON time per cycle is shortened by increasing the PWM frequency to 30 Hz or higher. Thus, the temperature rise per cycle is kept low, whereby the temperature rise per 0.1 second is rendered less than 25° C. | 08-28-2014 |
20150069044 | ELECTRIC HEATING SYSTEM FOR A FLUID LINE SYSTEM - A heating system for a fluid pipe system in which at least one electric heating element (R | 03-12-2015 |
20150108114 | Lithium Ion Battery Heater Systems And Methods - A battery heater system for a battery used in cold weather operations and methods for using the battery heater system are described. Embodiments of the battery heater system may incorporate a heater switch with an indicator, a timer circuit, a controller, a voltage meter, a temperature transducer, and a heating element. In some methods of using the device, the battery powers the heating element for a fixed cycle time based on the time to discharge the battery at a cold-soaked temperature. In other methods of using the device, the battery powers the heating element for a varying cycle time as necessary to discharge the battery to a discharge cut-off voltage value. In other methods of using the device, the heating element is operated using a duty cycle that is varied based on the battery temperature. | 04-23-2015 |
219493000 | Electromechanical | 1 |
20110095017 | SYSTEM FOR REDUCED PEAK POWER CONSUMPTION BY A COOKING APPLIANCE - According to one aspect of the present disclosure, a system for reducing peak power consumption in an electromechanically controlled cooking appliance is provided. The system comprises a surface heating unit comprising at least one duty cycle controlled surface heating element, a temperature controlled oven heating element, a controller configured to receive and process utility state signals indicative of the operating state of an associated utility, and a switch responsive to the controller, switchable between a first state and a second state for selectively coupling the oven heating element to a first relatively high voltage power supply and a second relatively low voltage power supply respectively. The controller is configured to switch the switch to the first and second states as a function of the utility state signal. | 04-28-2011 |