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| Number | Title | Issue Date |
| 7800028 | Controllable electrothermal element of PTC thick film circuit The invention provides a controllable electrothermal element of a PTC thick film circuit which includes a substrate and a serial electronic paste. The serial paste includes a medium and electrode paste. The serial paste consists of a functional phase, an inorganic a... | 09/21/2010 |
| 7687744 | Coordinated emission of fragrance, light, and sound A novel apparatus for producing combined presentation of light and aroma to produce a desired overall sensory effect. The includes a fragrance dispenser (31), a light source (42), an audio system (52), and a microprocessor (99). The fragr... | 03/30/2010 |
| 7683294 | Multistage control system of positive temperature coefficient heater and method thereof A multistage control system of a Positive Temperature Coefficient (PTC) heater for a vehicle is disclosed with a PTC heater that contains heating elements relevant to a first, second, and third stages. An Electronic Control Unit (ECU) outputs a control signal to a f... | 03/23/2010 |
| 7667164 | Electric heating device with tolerance PTC heating element For avoiding the selection and storage of PTC heating elements with different departures from rated heating power, additional tolerance PTC heating elements are held ready which uniformly have a lower rated heating power, preferably one half or third of the rated he... | 02/23/2010 |
| 7655887 | Feedback control system and method for maintaining constant resistance operation of electrically heated elements A system and method for controlling electrical heating of an element to maintain a constant electrical resistance, by adjusting electrical power supplied to such element according to an adaptive feedback control algorithm, in which all the parameters are (1) arbitra... | 02/02/2010 |
| 7534979 | Pressure-contact type rectifier with contact friction reducer An objective is to provide a pressure-contact type rectifier in which solder that increases the environmental load is not used, and neither burning nor breakage of a rectifying device occurs, even if temperature of the rectifying device increases due to current flow... | 05/19/2009 |
| 7488921 | Adaptive startup control method for electric drives A controlled start up technique may eliminate the excessive peak junction temperature by controlling the speed of the electric device. Lower speed may result in reduced power to the load. Reduced power may result in reduced losses to maintain reliable operating junc... | 02/10/2009 |
| 7473868 | Fail safe HVAC temperature and medium presence sensor A system and method is presented for a fail-safe sensor for an HVAC system. The sensor comprises a temperature detector operable to measure a temperature of a component or a medium present at the sensor, a PTC heater operable to heat the sensor to a self-regulating ... | 01/06/2009 |
| 7442902 | Adaptive temperature controller The adaptive temperature controller includes an ambient temperature sensor, a device for measuring resistance, an electrically-conductive material, a power supply, and a device for controlling power. In operation, the controller determines the resistance of material... | 10/28/2008 |
| 7429719 | Self-regulating heater with a semiconductor heating element and method of heating A self-regulating heater including a semiconductor for converting electrical energy to heat. A temperature sensitive element is used to bias the semiconductor as a function of temperature. The heating element has an advantage that its maximum temperature is limited ... | 09/30/2008 |
| 7408133 | Method of thermally coupling a flow tube or like component to a thermal sensor and sensor systems formed thereby A method of thermally coupling a flow tube or like component to a thermal sensor comprises bonding the component to the thermal sensor such that thermally conductive portions formed on the component are thermally coupled to corresponding sensing/heating elements dis... | 08/05/2008 |
| 7385161 | Method of estimating the temperature of an oxygen sensor heating element The resistance of an oxygen sensor heating element is estimated by modeling the effects of physical and electrical heating on the resistance of the heating element lead-in conductors, and subtracting the lead-in conductor resistance from a measure of the heating cir... | 06/10/2008 |
| 7378620 | Oven control system Oven control system, including a display screen, a data input means and a calculation unit able to send instructions to the display screen and to receive instructions from the data input means, the said calculation unit including a means for grading cooking programs... | 05/27/2008 |
| 7371459 | Electrical devices having an oxygen barrier coating An electrical device includes two electrodes and a conductive polymer layer, containing a mixture of a polymer and a conductive filler, separating the electrodes. A oxygen barrier material containing a thermosetting polymer component is present on the exposed surfac... | 05/13/2008 |
| 7372002 | Fluid heating device and cleaning device using the same A washing water inlet for receiving washing water is provided on an upper surface at one end of a case main body in a fluid heating device, and a washing water outlet for feeding heated washing water to a pump is provided on an upper surface at the other end of the ... | 05/13/2008 |
| 7361869 | Method for the production of an electrically conductive resistive layer and heating and/or cooling device An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no de... | 04/22/2008 |
| 7361868 | Electrical heating device, especially for motor vehicles This disclosure relates to an electrical heating device, especially for motor vehicles, including a closed frame (2) which include rails (3, 4) and cross rails (5, 6), heating elements (7) which include elements made of electrically condu... | 04/22/2008 |
| 7355504 | Electrical devices An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising (a) a main portion which comprises a main part of the first electrode, a ma... | 04/08/2008 |
| 7351938 | Electric blanket and system and method for making an electric blanket An electric blanket has a woven web of warp and weft fibers. At least a portion of the warp fibers are electrically conductive. At least a portion of the weft fibers are electrically conductive and interweave with the electrically conductive warp fibers at a first a... | 04/01/2008 |
| 7343671 | Process for manufacturing a composite polymeric circuit protection device A process for manufacturing a composite polymeric circuit protection device in which a polymeric assembly is provided and is then subdivided into individual devices. The assembly is made by providing first and second laminates, each of which includes a laminar polym... | 03/18/2008 |
| 7342201 | Silcon carbide element A ceramic heating element arrangement in which a ceramic heating element made of SiC having electrical NTC (negative temperature coefficient) properties is provided for a circuit. At least one segment is provided in the circuit, whose resistance saturates at least q... | 03/11/2008 |
| 7341679 | Organic positive temperature coefficient thermistor and manufacturing method therefor An organic positive temperature coefficient thermistor 10 having at least a pair of electrodes 2 and 3 positioned facing each other and a thermistor element 1 having a positive temperature coefficient of resistance which is positioned bet... | 03/11/2008 |
| 7335855 | Electric PCB heating component, electronic circuit board and heating method An electric PCB heating component for a heating electric component is coupleable to an electronic circuit board. The PCB heating component includes a fastening element, a heating element for generating thermal energy, and a heating body. The heating body emits therm... | 02/26/2008 |
| 7330097 | Direct current cutoff switch In a direct current cutoff switch1, a PTC 5, which is a non-linear resistor, is parallel connected to a contact circuit composed of a fixed contact 4-2 and a movable contact 8-2 via electrodes 5-1. When the swi... | 02/12/2008 |
| 7325749 | Distributed solid state programmable thermostat/power controller A self-contained power controller having a power driver switch, programmable controller, communication port, and environmental parameter measuring device coupled to a controllable device. The self-contained power controller needs only a single voltage source to powe... | 02/05/2008 |
| 7327951 | Instant water heater with PTC plastic conductive electrodes An instant water heater utilizing positive temperature coefficient plastic electrically conductive material structures for electrodes. The heating of the water is not generated by the electrodes, but instead by the resistance of the water to the electrical current f... | 02/05/2008 |
| 7326887 | Modified reset motor protector A self-hold motor protector (10) has an open metallic housing (12) in which a thermostatic disc (14) carrying a movable electrical contact (18) is cantilever mounted. A heater seat plate (20) is mounted in the housing in electrical... | 02/05/2008 |
| 7323664 | Heating system A heating system includes a plurality of radiant heaters, a power source supplying electricity to the radiant heaters, and a transformer provided between the radiant heaters and the power source, wherein each of the radiant heaters includes a support plate substanti... | 01/29/2008 |
| 7313921 | Apparatus and method for thermo-electric cooling A temperature regulator provides thermoelectric temperature control in a X-ray detector. The temperature regulator maintains the temperature within the X-ray detector by controlling current through a thermoelectric device. The temperature regulator can both heat and... | 01/01/2008 |
| RE39946 | Conductive polymer compositions containing N-N-M-phenylenedimaleimide and devices The invention provides polymeric PTC compositions and electrical PTC devices with a high voltage capability and improved electrical stability. The polymeric PTC compositions are readily blended and generally do not require cross-linking, particularly radiation induc... | 12/25/2007 |
| 7304272 | Systems and methods for adjusting parameters of a temperature sensor for settling time reduction A system for adjusting parameters of a temperature sensor for settling time reduction is disclosed. The system includes an input for receiving a signal for triggering an adjustment of one or more parameters associated with one or more portions of the temperature sen... | 12/04/2007 |
| 7301129 | Control circuit for semiconductor device having overheating protection function A control circuit includes a drive circuit which applies a drive voltage to a semiconductor device having an overheating protection function according to an externally supplied signal; and a current detecting circuit which outputs a detection signal when a drive cur... | 11/27/2007 |
| 7297901 | PTC element module and pre-heater for vehicles including the same Disclosed is a pre-heater for vehicles comprising: A PTC element module including a positive terminal composed of two sheets, an upper sheet of which has a fastening hole and upward bended ribs formed at opposite edges of the fastening hole; a ring-shaped insert ins... | 11/20/2007 |
| 7297907 | Means and method of maintaining a constant temperature in the magnetic assembly of a magnetic resonance device The present invention discloses a novel active insulation device and method for thermally shielding an external body from temperature fluctuations of a contained body. The method comprising providing an active thermal insulation envelope between the contained body a... | 11/20/2007 |
| 7291813 | Controller for electric article for human body A controller for an electric article includes a voltage-stabilizing circuit for supplying voltage stable DC power, a microprocessor, a temperature-detecting circuit, a protecting circuit, a control circuit, and a switch circuit. The temperature-detecting circuit inc... | 11/06/2007 |
| 7288748 | PTC electrical heating devices PTC electrical heating devices are disclosed which are suitable to vaporize air treatment chemicals from an impregnated slab, such as insect repellents. In one form an electrical contact to a PTC heater element is provided with a bowl-shaped contact head to reduce t... | 10/30/2007 |
| 7288749 | Electrical heating device and method of its manufacture An electric heating device based on a ribbon of crystalline metal foil with high specific resistance, which is additionally treated to increase its plasticity and/or additionally coated with a mold release agent to enhance compatibility of the ribbon and insulating ... | 10/30/2007 |
| 7285748 | Flexible heater device The heating device includes a conductive layer which is positioned on an electrically insulative substrate. Preferably, the conductive layer is screen printed onto the substrate. The substrate is designed to limit elongation of the conductive layer, thereby improvin... | 10/23/2007 |
| 7286037 | Protective element A protective element with improved spherical segmentation performance during the melting of a low-melting metal member, has a heat-generating member and a low-melting metal member on a substrate, in which the low-melting metal member is heated and blown out by the h... | 10/23/2007 |
| 7282678 | Electric heating module An electric heating module includes an electric heater (10), a heat pipe (20) having an evaporating section (22) thermally attached to the electric heater and a condensing section (24), and at least one heat radiator (30, 40) therm... | 10/16/2007 |
