| TAMURA CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20120032771 | Coil and method of forming the coil - A coil formed by winding one flat type wire material rectangularly edgewise thereby stacking the rectangularly edgewise wound flat type wire in rectangular tube shape, wherein not only one edge of the coil including the flat type wire including an end portion of start-of-winding thereof but also another edge of the coil including the flat type wire including an end portion of finish-of-winding thereof are formed to be projecting from an outer circumference of the coil. | 02-09-2012 |
| 20110169598 | Reactor part - A reactor part includes at least a winding and a magnetic substance core, in which the core includes a pair of winding portions around each the winding is wound, and a non-winding portion around which no winding is wound, wherein a cross-sectional area in a direction orthogonal to a magnetic path of the non-winding portion of the core is made smaller than a cross-sectional area in a direction orthogonal to a magnetic path of the each of winding portions. | 07-14-2011 |
| 20110006779 | FLUX-GATE LEAKAGE CURRENT SENSOR - A flux-gate leakage current sensor includes: an annular core; a coil wound around the core; a driving circuit which applies to the coil a voltage with a positive/negative symmetric rectangular wave so as to saturate a density of a magnetic flux of the coil while reversing a direction of the magnetic flux; a comparator circuit which compares a measured voltage changing according to a coil current flowing in the coil with a positive-side reference voltage and a negative-side reference voltage that are positive/negative symmetric to each other, and outputs a positive-side electric signal corresponding to a period in which the measured voltage is higher than the positive-side reference voltage and a negative-side electric signal corresponding to a period in which the measured voltage is lower than the negative-side reference voltage; and a determination circuit which compares the positive-side electric signal and the negative-side electric signal output from the comparator circuit. | 01-13-2011 |
| 20110006753 | ELECTRIC CURRENT SENSOR - An electric current sensor, including a circular magnetic material core, an excitation coil wound around the magnetic material core, a supplemental excitation coil wound around the magnetic material core, a first excitation circuit that applies an alternating excitation voltage to the excitation coil, a second excitation circuit that applies pulsed voltages synchronized with rising edges and lowering edges of the excitation voltage, the pulsed voltages causing the supplemental coil generate magnetic fields having the same directions as that of the magnetic fields generated by the excitation coil, a current-to-voltage converter that converts a current flows through the excitation coil into a voltage, and a detection unit that detects respective timings when the alternating magnetic field in the magnetic material core is saturated in a positive direction and in a negative direction. | 01-13-2011 |
| 20100319802 | LINKED COIL FORMATION DEVICE AND METHOD OF FORMING LINKED COILS - [Problem to be Solved] A first coil and a second coil are efficiently formed in the shape of a rectangular cylinder and in parallel to each other, by bending and processing a flat wire, and a linking part of each of the coils, is linked with the same material without welding or folding. | 12-23-2010 |
| 20100226410 | Securing structure of sensor element having lead and securing unit thereof - A securing structure for securing a measuring member having a sensor element and a lead elongated from the sensor element to a subject to be measured, the securing structure includes the measuring member including a measuring section having a covered portion in which a part of the lead elongated from the sensor element and having a predetermined length is covered by a material having a rigidity larger than that of the lead, the covered portion being folded toward the side of the lead elongated from the covered portion to produce a folded end portion; and the subject to be measured having an insertion section through which the measuring section is inserted from the side of the folded end portion, a container section which contains the measuring section inserted through the insertion section, and a contact section with which the head portion of the covered portion comes into contact and by which the measuring section is prevented from falling out, when the lead is pulled. | 09-09-2010 |
| 20100219228 | REFLOW APPARATUS - The present invention provides a reflow apparatus capable of precisely adjusting the heating temperature and heating time when heating a work for reflow. A work transfer conveyor for transferring a work into a furnace body is disposed, wherein a plurality of preheating zones through for preheating the work, a plurality of reflow zones for heating the work for reflow, and a plurality of cooling zones for cooling the work are successively arranged along the work transfer conveyor in the furnace body. The individual reflow zones are formed shorter than the individual preheating zones in the work transfer direction. It is preferable that the sizes of the individual reflow zones in the transfer direction are shortened to approximately 65% to 85% with respect to the individual preheating zones or the conventional individual reflow zones. | 09-02-2010 |
| 20090231078 | Switching Transformer - There is provided a switching transformer which enables material costs to be reduced while the performance to be improved, permitting cost and size reductions, and which is suitable for mass production by ensuring good assemblability. Instead of using a conventional coil bobbin having a winding drum part, a center-leg-having core | 09-17-2009 |
| 20090206145 | REFLOW SYSTEM - A reflow system in which a reflow furnace is sequentially divided into a plurality of zones along a conveying path of a heat target which is conveyed and by controlling temperatures of the plurality of zones, the heat target which is conveyed is reflowed has: a cooling and flux collecting apparatus circulating and cooling atmosphere gases in furnace bodies of a part or all of the plurality of zones and collecting a flux; and a flow rate control unit which is inserted into a circulating path of the atmosphere gas of each of the zones and can control a flow rate. When the temperature of the zone is reduced, by controlling the flow rate control unit, the flow rate is set to be higher than that upon collecting the flux. | 08-20-2009 |
| 20090146535 | PIEZOELECTRIC TRANSFORMER - A piezoelectric transformer includes: a piezoelectric transducer on whose outer surface an electrode is formed; a case housing the piezoelectric transducer; a terminal disposed to face the electrode; an elastic member in contact with both the electrode and the terminal in the case and having conductivity to bring the electrode and the terminal into mutual continuity; and a folder formed in the case and fixedly holding the elastic member to press-fit the elastic member between the electrode and the terminal. | 06-11-2009 |
| 20090144967 | Coil and Method for Forming Coil - [Problem] Manufacturing work of a coil is simplified and miniaturization of a reactor is achieved by reducing occupied space as much as possible. | 06-11-2009 |
| 20090029603 | ELECTRICAL APPARATUS AND METHOD OF MANUFACTURING THE SAME - An electrical apparatus connected to a commercial power source includes: a case made of resin and housing a functional member; blades insert-molded in the case and each having an exposed part connected to the commercial power source and a resin facing part which is enclosed by the resin and all along an outer periphery of which a groove is formed; and elastic members each disposed between the resin and the resin facing part and having a fitting convex coming into close contact with the groove at the time of the insert molding. | 01-29-2009 |
| 20090009276 | TRANSFORMER MOUNTED ON CIRCUIT BOARD WITH MAIN BODY SURROUNDED BY INSULATING COVER - A transformer | 01-08-2009 |
| 20090008432 | HEATING DEVICE, REFLOW DEVICE, HEATING METHOD, AND BUMP FORMING METHOD - A solder bump is formed on a substrate by using a heating device where a lid structure blocks hot air from directly blowing against a solder composition. The heating device can reduce high-temperature oxygen molecules that come into contact with the solder composition, oxidation of the solder composition is suppressed. As a result, although the hot air is used for heating, a solder bump can be formed by the liquid-like solder composition. Further, because the lid structure is uniformly heated by the hot air, radiation heat from the lid structure is also uniform, and a container is more uniformly heated. In addition, because the hot air is suppressed from directly blowing against a liquid surface, the liquid-like solder composition is not scattered by the hot air. | 01-08-2009 |
| 20080290812 | Transformer Driver and Transformer Driving Method - A transformer driver capable of making a load current constant with a simple configuration is provided. A driver | 11-27-2008 |
