Class 338/53 - WITH COOLING GAS OR LIQUID CIRCULATION

Subclass of Class 338 - Electrical resistors
Definition: Subject matter wherein the resistor includes structure which
No. of patents: 30
Last issue date: 03/08/2011

Number	Title	Issue Date
7902957	Phase change cooled electrical resistor A technique is disclosed for cooling resistive elements, such as brake resistors used in motor drives, as well as other resistors. A phase change heat spreader is thermally coupled to the resistive element and a continuous phase change cycle takes place in the heat ...	03/08/2011
7277289	Resistor for controlling a fan motor rotating speed for use in an air conditioner Provided is a resistor for controlling a fan motor rotating speed for use in an air conditioner. The resistor comprises a base body, a radiator attached to a top portion of the base body, a printed resistor circuit board covered with insulating sheets and received w...	10/02/2007
7231960	Cooler for cooling both sides of semiconductor device An object of the present invention is to provide a cooler for cooling both sides (top and bottom surfaces) of a semiconductor device, wherein the variation of pressing force on flat cooling tubes holding a semiconductor device is reduced, thereby uniformly dissipati...	06/19/2007
7200007	Power stack A power stack includes cooling pipes and semiconductor modules which are alternately laminated. Each cooling pipe includes an inside space dissected into cooling passages in which coolant flows. Both surfaces of the semiconductor module in a laminating direction are...	04/03/2007
7102484	High power resistor having an improved operating temperature range A high power resistor includes a resistance element with first and second leads extending out from the opposite ends thereof. A heat sink of dielectric material is in heat conducting relation to the resistance element. The heat conducting relationship of the resista...	09/05/2006
7075407	Temperature sensor A temperature sensor has lead lines made of an elastic material each attached to a corresponding one of electrodes on a temperature sensing element such as an NTC thermistor element. The lead lines may each have a non-straight part where they are bent or deformed in...	07/11/2006
7049928	Resistor and method of manufacturing the same The resistor of the present invention comprises a substrate, a pair of electrodes, and a resistor element comprising rectangular sections connected to the pair of electrodes and a S-shaped section disposed between the rectangular sections and is free of trimming por...	05/23/2006
7042330	Low resistance value resistor The low resistance value resistor 11 has two electrodes 12,13 of metal strips having a high electrical conductivity. The metal strips are affixed on the resistor body by means of rolling and/or thermal diffusion bonding. A fused solder layer is formed ...	05/09/2006
6924726	Liquid-cooled high-power resistor A high-power resistor comprises a plurality of resistor elements (1), made of sheets of an electrically conductive resistance material, with a first (13) and a second (14) terminal. The resistor elements are mutually separated by disc-shaped ins...	08/02/2005
6747543	Resistor for driving motor for air conditioner blower A resistor for driving a motor for an air conditioner blower is provided, in which internal resistance bodies are stacked over one after another between insulation plates in the resistor, to accordingly reduce the volume of the entire of the resistor is reduced, and...	06/08/2004
6525395	Chip-type composite electronic component and manufacturing method thereof An inductor obtained by laminating a plurality of ceramic layers having an internal coil conductor, and a thermistor obtained by laminating a plurality of ceramic layers having internal electrodes and having a predetermined resistance-temperature characte...	02/25/2003
6430045	Cooling resistor banks Resistor bank cooling apparatus 1 has an enclosure 2 surrounding a resistor bank 4. At least one first vane 6 directs into the enclosure 2 air flowing past an open side 12 thereof, which open side 12 is not a side facing the direction from which the air f...	08/06/2002
6181234	Monolithic heat sinking resistor A monolithic resistor is provided with a central resistive metallic foil strip positioned between and attached to a pair of wings formed from an electrically conductive metallic foil. The wings include large surface areas to dissipate heat. A plurality of...	01/30/2001
6173487	Resistor unit for a fan speed controller of an automotive air conditioning device A fan speed controller of an automotive vehicle air conditioning device is usually placed in an air flow duct to be effectively cooled. Thus, compact construction of the speed controller is needed to obtain a larger air flow in the air flow duct. For this...	01/16/2001
6094129	PTC thermistor and a current limiter device having at least one PTC thermistor PTC thermistors are used in reversible short circuit current limiters, in particular in series connection with electrical valves and/or capacitors. An electrically insulated, thermally conductive insulation or ceramic layer (20) is in contact electrically...	07/25/2000
5877674	Resistor with elongated resistor element panels A resistor comprising a substantially continuous resistor element being formed into a plurality of element panels with each panel having at least two holes provided therein. Adjacent element panels are connected in series by a bend in the resistor element...	03/02/1999
5867086	Resistor unit for a fan speed controller of an automotive air conditioning device A fan speed controller of an automotive vehicle air conditioning device is usually placed in an air flow duct to be effectively cooled. Thus, compact construction of the speed controller is needed to obtain a larger air flow in the air flow duct. For this...	02/02/1999
5841340	Solderless RF power film resistors and terminations Solderless RF power film resistor and termination assemblies which include a flat film resistor or termination pressed by a nonmetallic clamping plate into thermal contact with a base plate functioning as a heat sink. A substrate such as a BeO ceramic sub...	11/24/1998
5786745	Electronic package and method A package (10) has outermost surfaces (12, 13, 14, 16) that form a polygon shape. The body (11) of the package (10) has axial symmetry about an axis (21). A lead (22) exits the package along the axis (21)....	07/28/1998
5703561	Resistor device A resistor device can be cheaply produced without a troublesome processing and without a complicated manufacturing process, obtaining a construction which has a stable efficiency. The resistor body 24 which can change a resistance value by selecting a plu...	12/30/1997
5508677	Liquid-cooled heavy-duty resistor A liquid cooled, heavy duty resistor including a housing and a resistor element. The resistor element is arranged inside a chamber defined by the housing. The resistor element and the housing form a rectangular duct through which a cooling liquid flows fr...	04/16/1996
5321382	Thermal type flow rate sensor A thermal type flow rate sensor comprising a sensor chip having a rectangular shape. The sensor chip is supported between supporting pins through ribbon-like leads connected to opposite ends of the sensor chip. The ribbon-like leads serve to correctly loc...	06/14/1994
5291175	Limiting heat flow in planar, high-density power resistors A chip resistor whose resistive element provides a power density of at least 20 watts per square inch is provided with an air gap between the resistance element and the electrical contact junctions of the conductive strips electrically connected to the re...	03/01/1994
5280264	Resistor element having lead wire consisting of wire rod and covering alloy layer A resistor element for determining a parameter, including a ceramic support, an electrically resistive body formed on the ceramic support, at least one lead wire electrically connected to the electrically resistive body, and an adhesive containing platinu...	01/18/1994
5028763	High heat dissipation PTC heater structure A pair of plates of good heat and electric conductivity have a plurality of openings and a plurality of foraminous areas. The plates are secured to one another with the openings and foraminous areas of the two plates aligned with one another. The plates a...	07/02/1991
4939498	PTC thermistor device with PTC thermistor unit housed in case A PTC thermistor device includes a case in which a holding plate made of metallic material is vertically arranged; and on each of both main surfaces of the holding plate, an electrode from a respective one of two PTC thermistor units is fixed. Therefore, ...	07/03/1990
4434417	Liquid-cooled power resistor and use thereof A liquid-cooled power resistor contains at least one resistive conductor which is arranged in a closed housing directly in de-ionized water employed as the cooling liquid or coolant. The resistive conductor is advantageously secured in diaphragms which no...	02/28/1984
4420739	Liquid-cooled electrical assembly A liquid-cooled electrical assembly containing an arrangement for cooling at least one electrical component under current flow. In this assembly, liquid coolant flows into an inlet in the cooling arrangement and the heated-up coolant is removed through an...	12/13/1983
4414447	Low DC voltage, high current switch assembly A low voltage, high continuous current DC switch assembly is provided having integral switch operating means with the switch and a resistance means which is fluid cooled. This switch assembly is particularly adapted to function as a shunt switch assembly ...	11/08/1983
4048664	Protective circuit for dynamic braking resistors A circuit for protecting a pair of dynamic brake resistors when either of two motors driving fans for cooling the resistors fails. A sensing circuit couples the terminal of the two motors to a switch circuit. The sensing circuit reduces the energy to the ...	09/13/1977

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Class 338/53 - WITH COOLING GAS OR LIQUID CIRCULATION