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| Number | Title | Issue Date |
| 7301468 | Method and apparatus for real time monitoring of an electric furnace heating coil Heating coils used in an electric furnace used to process semiconductor wafers are monitored on a real time basis by sensing the AC current in a power line delivering electrical power to the furnace. The AC current is sensed by a coil positioned around and magnetica... | 11/27/2007 |
| 7293914 | Temperature detecting heater with indicating structure for aquarium A temperature detecting heater with an indicating structure for an aquarium, the temperature detecting heater mainly has an indicating structure including a control circuit and a two-color LED indicating lamp in its circuitry. After the temperature detecting heater ... | 11/13/2007 |
| 7148453 | Control unit with thermal protection and an electrical heating device comprising the control unit An overheating protection system for a control unit includes an interrupter element, which, in its initial position defined with respect to a circuit board, electrically connects the opposite facing ends of at least one track on the circuit board, and an actuating e... | 12/12/2006 |
| 7122766 | Range anti-tip device and method A method and safety control are provided for a free standing kitchen range which reduces the likelihood that the range will tip due to a child climbing onto the oven door. The safety control is configured to cause the oven door to be heated whenever a cooktop burner... | 10/17/2006 |
| 7085482 | Aquarium water heater An aquarium water heater includes a hollow heat-conducting internal tube with an electric resistance heater element and electrical connections disposed adjacent an outer surface of the hollow heat-conducting internal tube, a temperature thermal cut-out switch electr... | 08/01/2006 |
| 7019270 | System for reducing noise from a thermocouple in an induction heating system A method and apparatus for reducing electrical noise in an electrical signal from a temperature feedback device to an induction heating system. The induction heating system has an electrical connector that is adapted to electrically couple a temperature feedback dev... | 03/28/2006 |
| 6936343 | Ceramic substrate An object of the present invention is to provide a ceramic substrate that is superior in temperature rising/dropping characteristics and breakdown voltage at a high temperature, has a small warp amount, and is best as a substrate for semiconductor-producing/examinin... | 08/30/2005 |
| 6914514 | Switch for water boiling appliance such as a kettle A steam-responsive switch for use in an electrical water boiling appliance comprises a main body (12) from which extends a tubular portion (13) having at or near its leading end a heat responsive bimetal (16) extending across the mouth thereof w... | 07/05/2005 |
| 6908444 | Use of a heatable mat for manufacturing an orthotic device The use of a flexible, foldable or rollable and heatable mat for the manufacture of an orthosis, in which a flat sheet of a thermoplastic material is heated on a flat-laid mat to a temperature at which the sheet softens and can be readily shaped, whereafter the shee... | 06/21/2005 |
| 6909862 | Printer apparatus having fixing unit with heat controller for controlling temperature of heat-up roller Disclosed is a printer apparatus that ensures temperature control of a heat-up roller in a fixing unit thereof. An image-forming unit forms an image to be transferred onto a recording material. The fixing unit fixes the image onto the recording material. The fixing ... | 06/21/2005 |
| 6830372 | Thermal testing control system A thermal testing control system for notebook computers, remotely controlled by a control means, is described. An enclosure can test notebook computers in its inner space under a predetermined temperature. A temperature sensor, mounted in the testing room is electri... | 12/14/2004 |
| 6801117 | Fault sensing wire and alarm apparatus A fault sensing electrical wire (411) utilized one or more sensor strips (407) which provide an impedance change when the wire is subject to an overtemperature condition or mechanical damage of the wire. A control unit (402) measures the impedan... | 10/05/2004 |
| 6753511 | System and method for thermal limiting of the temperature of a cooktop without using a temperature sensor A system and method for limiting the temperature of a burner for a cooking appliance without the use of a temperature sensor. The method includes the step of sensing the conduction state of a thermal switch and feeding back the sensed signal to control the duty-cycl... | 06/22/2004 |
| 6730891 | Over-temp safety device An over-temperature safety device is provided. A slug of material fusible at a selected critical temperature is positioned on a heat conductive surface. A bolt is positioned through a hole in the slug. The bolt has a head which is smaller than the bolt hole. A plate... | 05/04/2004 |
| 6512444 | Fault sensing wire and alarm apparatus A fault sensing electrical wire (411) utilizes one or more sensor strips (407) which provide an impedance change when the wire is subject to an overtemperature condition or mechanical damage of the wire. A control unit (402) measures the impedance of the ... | 01/28/2003 |
| 6495805 | Method of determining set temperature trajectory for heat treatment system This invention is a method of determining set temperature trajectories for a heat treatment system that conducts a first heat treatment process and a second heat treatment process to an object to be processed. The method comprises the steps of: conducting... | 12/17/2002 |
| 6433310 | Assembly suitable for reading/writing/erasing information on a media based on thermal coupling A thermal assembly comprising at once a reading-writing-erasing capability. The present invention, accordingly, can realize important advantages of providing dual yet independent capabilities or functionalities for manifesting reading-writing-erasing on t... | 08/13/2002 |
| 6430364 | Cooling system for cooling interior of substantially airtight housing A heater protective device of a cooling system includes a couple of thermostats and one thermal fuse. The thermostats are secured to opposing sides of one metal plate. When a temperature of each thermostat rises due to the heat conducted through the metal... | 08/06/2002 |
| 6310330 | HVAC heater power and control circuit An improved system and method for controlling the temperature of a resistance heater in a heating, ventilation and air-conditioning ("HVAC") system is disclosed. The control circuit and method includes three separate thermostats per heater leg and are des... | 10/30/2001 |
| 6285012 | Method and apparatus for thermal limiting of the temperature of a glass-ceramic cooktop The temperature of a cooktop is controlled such that a maximum temperature of a cooktop reaches about a predetermined maximum temperature. The temperature is controlled by controlling power supplied to a radiant heating element positioned below the cookto... | 09/04/2001 |
| 6229116 | Heat treatment apparatus A heating treatment apparatus comprises a hot plate on which a substrate to be processed is to be mounted, a heater for heating the hot plate, a plurality of first sensors for detecting temperatures of a plurality of portions of the hot plate, respectivel... | 05/08/2001 |
| 6163013 | Continuous duty direct current heated windshield with ambient temperature limit switch An electric heating grid extends from the middle of one side of the windshield, down that side to the bottom of the windshield, and from there across the bottom to the opposite side. The grid is operated by a control circuit having an on-off switch that i... | 12/19/2000 |
| 6118934 | Safety protection structure for aquarium heater A safety protection structure for aquarium heater, including an anti-corrosion tube body in which an insulative receptacle, an electric heater, a thermal control switch, an anti-oxidation heat conductive layer, a grounding mechanism and multiple water-sea... | 09/12/2000 |
| 6084218 | Spa heater temperature control circuit A heater assembly for use with spas, hot tubs and the like, includes a control circuit which controls the application of electrical power to the heater. A control circuit controls application of power to the heater in response to a thermostat setting, the... | 07/04/2000 |
| 6057529 | Combination temperature sensor, warning light sensor and light indicator for heating elements A switch which controls a heating element in terms of limiting its overheating and indicating both that the heating element is on and that it has a hot surface associated therewith is disclosed, particularly for use with range top cooking elements.... | 05/02/2000 |
| 5968395 | Bistable actuator with two thermal actuating elements electrically operated independently of one another or multiposition setting of the device A simple, low-cost, reliable thermoactuator device is described, being capable of taking a plurality of stable working position besides its rest position. One and the same body is associated with at least two thermoactuators whose arrangement is such as t... | 10/19/1999 |
| 5938984 | Temperature regulating method of a humidifier according to a surrounding temperature A temperature regulating method of a humidifier regulates a temperature of water vapor ejected therefrom according to a surrounding temperature. A cool humidification mode is added to a humidification mode of the humidifier, and a temperature of a humidif... | 08/17/1999 |
| 5856654 | Temperature control and safety device associated with a heating element of a glass ceramic cooking hob, arranged to prevent overheating thereof A safety device associated with a heating element of a glass ceramic cooking hob and arranged to prevent overheating of the cooking hob, the element comprising an insulating body defining a seat containing at least one heat generator, the device comprisin... | 01/05/1999 |
| 5796076 | Sauna heater control A sauna heater control having a plurality of electrical heater elements for heating a sauna chamber, an alternating current heater power circuit, a half-wave rectifier for selective inclusion in the alternating current heater power circuit, a plurality of... | 08/18/1998 |
| 5750960 | Device for heating and maintaining a constant temperature in a liquid, in particular the water of aquariums A device for heating the water in an aquarium comprises a casing, and housed in the casing, at least one heater element, a thermostat, an electrical circuit by way of which the heater element and thermostat are wired in series to an external power supply,... | 05/12/1998 |
| 5744786 | Automatic cooking apparatus having turntable and infrared temperature sensor Apparatus for automatic cooking of a cooking object in a cooking apparatus, such as a microwave oven, in which a surface temperature of the cooking object is accurately detected for automatic cooking of the cooking object, is disclosed, including infrared... | 04/28/1998 |
| 5740313 | Light beam heating apparatus During a preheating period of a light beam heating apparatus for heating a material locally with a light beam, fans for cooling a lamp for generating a light beam are not operated. A power source supplies current to a lamp. A current detector detects the ... | 04/14/1998 |
| 5702626 | Automatic cooking controlling apparatus and method employing a narrow viewing angle of an infrared absorptive thermopile sensor In an automatic cooking controlling apparatus and method for a cooker, the apparatus includes a turntable installed within a chamber of the cooker for placing a to-be-cooked object thereon, an infrared filter for filtering only the infrared wavelength ban... | 12/30/1997 |
| 5667710 | Electrical heater device for heating the interior of an automobile A electrical heater device for heating the interior of an automobile including a housing that is mounted to an automobile heater core. The housing has a top plate with an interior surface, a bottom plate and a pair of side plates. The housing has a first ... | 09/16/1997 |
| 5662025 | Control circuit for an electric cooker Disclosed is a control circuit for an electric cooker. In the control circuit of the electric cooker, a voltage selection supply rectifies a selected voltage, and applies it to a voltage sensor. The voltage sensor compares the voltage from a power supply ... | 09/02/1997 |
| 5512732 | Switch controlled, zone-type heating cable and method A parallel, zone-type heating cable wherein thermally-controlled ferrite reed switches in each zone regulate current flow to heating elements aligned in parallel with each other. Two parallel conductors deliver current to the switches and the heating elem... | 04/30/1996 |
| 5495551 | Fast recovery circuit for heat pump water heater An external circuit that works in conjunction with the existing tank thermostatic controls to control both a water heating heat pump and the existing resistance elements in a water heater. The existing resistance elements are disabled to allow the heat pu... | 02/27/1996 |
| 5489762 | Appliances having resistive heating elements and thermal protective apparatus used therewith A thermal protector (70, 70') is shown particularly suitable as a safety back-up mechanism for appliances having electrically energizable resistance heaters. The thermal protector has first (72, 72') and second (74, 74') electrically conductive housing me... | 02/06/1996 |
| 5418522 | System for indicating and signaling the presence of snow and ice A moisture sensor with two heatable concentric moisture electrodes and a temperature sensor detecting the electrode temperature is set into the roadway surface to be monitored. The moisture electrodes are heated by a heating current circuit. The heating c... | 05/23/1995 |
| 5396047 | Electric heating unit with alternately heated surface areas A heating unit (1) for a cooking point has an outer heater (3) and an inner heater (4) located concentrically for separately heating an associated surface area (13, 14) of the overall heating surface (2). The two heaters (3, 4) can be differently regulate... | 03/07/1995 |
