Matches 1 - 50 out of 123 1 2 3 >
Match Document Document Title
7605352 Method for sorting positive temperature coefficient (PTC) elements  
In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements...
7564338 Micromechanical device having integrated heating  
A micromechanical device having a micromechanical component and a heating element and a method for controlling and/or regulating the heating element. In this context, the heating element is used to...
7423514 Constant-power constant-temperature resistive network  
A thermally stabilized device is described. Single or multiple input ports are accommodated and single and multiple power ports are described. The variation of resistance of a resistor subject to...
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...
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...
6975031 Semiconductor device and chip carrier  
There are provided a carrier substrate, a temperature sensing resistor film formed directly on the carrier substrate, first and second conductive patterns formed on the carrier substrate and...
6861939 Arrangement of a heating layer for a high-temperature gas sensor  
The operating temperature of a gas sensor capable of sensing a gas or a gas composition at a high temperature, for example 1000° C. is maintained constant over the entire volume of a gas sensor...
6750754 Over-current protection apparatus  
The present invention reveals an over-current protection apparatus comprising a first electrode plate, a second electrode plate, a third electrode plate, a conductive element and a high resistance...
6744346 Electronic device workpieces, methods of semiconductor processing and methods of sensing temperature of an electronic device workpiece  
The present invention includes electronic device workpieces, methods of semiconductor processing and methods of sensing temperature of an electronic device workpiece. In one aspect, the invention...
6392528 Circuit protection devices  
An electrical device which contains a first electrode, a second electrode, a third electrode, a first resistor which is connected in series between the first and second electrodes, and a second...
6232868 Hybrid circuit arrangement with overload protection  
Hybrid circuit arrangement having a resistance layer applied at least on one side of a plate-shaped substrate of glass or ceramic and having at least one overload protection arranged on the...
6184773 Rugged fluid flow and property microsensor  
A thermal fluid flow or property sensor having no exposed contact wires or contact pads in the fluid flow path to obstruct measurements, flat fully passivated sensor surfaces and high corrosion...
6157286 High voltage current limiting device  
A high voltage, current limiting device is connected in series with a high voltage power source and a protected load to interrupt current for an over-current condition [Typically 50 kA]. The...
6149123 Integrated electrically operable micro-valve  
Integrated, electrically operable micro-valves are formed to control fluid flow and pressure. These valves convert electrical energy to mechanical energy through an energy conversion device having...
5865417 Integrated electrically operable normally closed valve  
A genus of integrated valves having an integrated actuator with a thin, flexible membrane formed of silicon driven by pressure of a fluid trapped in a cavity formed by bonding a first and second...
5831511 Resistance temperature detector assembly and method of fabricating same  
A resistance temperature detector (RTD) unit includes an RTD assembly that is removably supported in a central chamber of a support assembly. In a preferred arrangement, the RTD assembly and the...
5473304 Method of protecting catalytic converters for exhaust gas purification and heat tone sensor for implementing the method  
A method is disclosed for the protection of catalytic converters for exhaust gas purification by measuring the temperature with a heat tone sensor suitable particularly for the implementation of...
5416462 Electrical resistance element  
An electrical resistance element having a resistance body between two contact terminals. The resistance body has PTC behavior and is composed of a polymer matrix and a filler component embedded in...
5414403 Current-limiting component  
A current-limiting component having an electrical resistance body arranged between two contact terminals. The resistance body contains a first resistance material having PTC behavior. Below a limit...
5258736 Temperature sensor or temperature sensor arrangement made from glass ceramic and bonding film resistors  
Temperature sensors or temperature sensor arrangements made from glass ceramic and bonding film resistors, suitable especially for control and limitation of output in glass ceramic cooking areas,...
5166658 Electrical device comprising conductive polymers  
Circuit protection systems which comprise a PTC resistor and a second resistor, e.g. a thick film resistor, which is thermally and electrically connected to the PTC resistor have a break current I...
5148124 Monolithic microwave integrated circuit noise generator and variable resistance device  
A monolithic microwave integrated circuit device provides a microwave transmission line with a resistor coupled thereto and a heating element thermally coupled to the resistor but electrically...
5142267 Level sensor which has high signal gain and can be used for fluids particularly chemically corrosive fluids  
A PTC-resistor which is a temperature dependent electrical thermistor of semiconductor ferro-electric ceramic which is provided with power leads and serves as a sensor element is directly fused...
5123752 Wear resistant temperature sensing device  
A temperature sensing device for moving surfaces such as electrostatographic fusing rollers includes an electrothermal material such as a thermistor printed on a concave shaped, thermally...
5038752 Boiling water dispenser having improved water temperature control system  
A sensor assembly for boiling water dispenser includes clamping members for mounting a sensor such as a thermister in position to sense the presence and absence of steam.
5035514 Thermal probe for measuring thermal properties of a flowing medium  
A device for heating a medium with which the device is in thermal contact for use in determining the thermal or flow properties of the medium. The device has a heater for supplying heat to the...
4943032 Integrated, microminiature electric to fluidic valve and pressure/flow regulator  
A pressure regulator integrated in a sandwich of pyrex and silicon wafers. A first integrated valve comprising a silicon wafer in which there is etched a cavity so as to leave a flexible membrane...
4914742 Thin film orthogonal microsensor for air flow and method  
A microbridge air flow sensor which has a sealed etched cavity beneath the silicon nitride diaphragm so that the cavity is not susceptible to contamination from residual films or other material...
4825693 Slotted diaphragm semiconductor device  
An integrated semiconductor device includes a semiconductor body with a first surface having a predetermined orientation with respect to a crystalline structure in the semiconductor body. The...
4808009 Integrated semiconductor resistance temperature sensor and resistive heater  
An integrated sensing device includes a resistance temperature sensor formed in a semiconductor substrate and a resistance heater which is formed on an insulating layer which covers the surface of...
4780598 Composite circuit protection devices  
Circuit protection devices which comprise a PTC conductive polymer element and a second electrical component which is thermally coupled to the PTC element and which, when a fault causes the current...
4725713 Electrically heated hose employing a hose simulator for temperature control  
A system for electrically heating a hose of the type used to transport one or more fluid components from a remote location to a point of application includes at least one fluid conduit and an...
4633069 Heat-exchanger  
A body comprising a ceramic electrical resistance material of positive temperature coefficient of resistivity adapted to display a sharp increase in resistivity when heated to a selected...
4609913 Fluid level sensor  
A fluid level sensor utilizes thick film thermistors in a four-thermistor bridge configuration. The bridge is heated by a heater to sense the presence or absence of fluid at a particular level with...
4510482 Protective circuit for electronic test probes  
A resistor device comprises a first film of resistive material deposited on a dielectric substrate and having two terminal portions for connection to an electrical circuit, and a second film of...
4504817 Demagnetizing circuit using a PTC thermistor device  
A PTC thermistor device includes three PTC thermistors aligned and disposed in a heat transmission relation to each other such that the center PTC thermistor provides heat to the other PTC...
4467310 Telephone subscriber line battery feed resistor arrangements  
Battery feed resistors are constituted by thick film resistors on a substrate, electrically in series with switching type positive temperature coefficient (PTC) resistors which are closely...
4458137 Electric heater arrangement for fluid flow stream sensors  
An air data sensor device, such as a pitot, total air temperature sensor, etc., includes an elongated probe having a sensor therein for sensing air flow parameters and a strut for positioning the...
4452191 Short duration PTC resistor timer  
A short duration timer for use in an electronic circuit such as a diesel engine glow plug control includes a first PTC resistor energized by an electric power source and stabilized in the...
4446295 Thermistor using organophosphazene polymer  
A thermistor using an organophosphazene polymer having aryloxyl and/or alkoxyl group pendants as a thermo-responsive material. The organophosphazene polymer has an excellent responsiveness to...
4357590 Composite thermistor component  
A component consisting of two coupled PTC thermistors with the first thermistor having a lower cold resistance than the second thermistor and the first thermistor having a higher resistance at the...
4352083 Circuit protection devices  
Circuit protection devices which comprise two columnar electrodes and a conductive polymer element, at least a part of which is a PTC element. The device is so constructed that if a hot zone forms...
4350870 Temperature sensor for sheet-shaped heating element  
A temperature sensor for a sheet-shaped heating element includes a thermistor which is fixedly mounted in a mounting aperture formed in a sheet-shaped heating element. The thermistor is disposed in...
4316080 Temperature control devices  
A temperature-controlling circuit including a heating element, a portion of which is shunted by a proportional PTC thermistor having a low rate of charge of resistance with increasing temperature...
4282003 Method for constructing a self-regulating electric heater  
A method of constructing a self-regulating electric heater particularly useful for heating compressor lubricant and the like is disclosed in which a cylindrical body of electrically insulative...
4276536 Self-heating thermistor probe for low temperature applications  
A liquid level sensing probe includes a glass or ceramic thermally conductive housing which is molded around a positive temperature coefficient thermistor and a negative temperature coefficient...
4245146 Heating element made of PTC ceramic material  
Disclosed herein is a heating element for an air heater and the like comprising a ceramic material in the form of a honeycomb as well as the process for producing the ceramic material. The heating...
4236065 Self-regulating electric heater  
A self-regulating electric heater particularly useful for heating compressor lubricant and the like is disclosed in which a cylindrical body of electrically insulative ceramic is formed with an...
4228343 Collapsible cordless electric hair curling appliance  
A collapsible cordless electric hair curling appliance includes a hollow handle adapted for grasping by a user. A heating wand is extensibly slidably retained in the hollow portion of the handle....
4208786 Titania thermistor and method of fabricating  
A high temperature thermistor and its method of fabrication are disclosed. The thermistor is fabricated from titanium dioxide ceramic forming material and is fabricated to achieve a high degree of...
Matches 1 - 50 out of 123 1 2 3 >