Masahiro Takada
Masahiro Takada, Hamana-Gun JP
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20100143812 | POWER SUPPLY DEVICE - A clean power supply unit with a high fuel utilization rate using a fuel cell is provided. The power supply unit of the present invention comprises a fuel cell using methanol as fuel; a secondary battery for supplying power to a load; a fuel cell control part for controlling the amount of fuel and/or air supplied to the above-mentioned fuel cell; and a power converter for converting the power output from the above-mentioned fuel cell to a predetermined voltage or current, supplying power to the load and/or the above-mentioned secondary battery and controlling the supplied power so as to fall within a predetermined range including the value at which the amount of methanol discharged from the above-mentioned fuel cell becomes minimized. | 06-10-2010 |
Masahiro Takada, Shizuoka JP
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20080286617 | DIRECT OXIDATION FUEL CELL - A direct oxidation fuel cell of this invention has at least one unit cell including: a membrane-electrode assembly comprising an electrolyte membrane sandwiched between an anode and a cathode, each of the anode and the cathode including a catalyst layer and a diffusion layer; an anode-side separator with a fuel flow channel for supplying a fuel to the anode; and a cathode-side separator with an oxidant flow channel for supplying an oxidant containing oxygen gas to the cathode. The fuel flow channel and the oxidant flow channel are so structured that the concentration of the oxygen gas in the oxidant flow channel is higher at a part opposing an upstream part of the fuel flow channel than at a part opposing a downstream part of the fuel flow channel. | 11-20-2008 |
20080311452 | FUEL CELL SYSTEM - A fuel cell system includes: a fuel cell stack including a plurality of fuel cells connected in series; a fuel supply portion supplying a fuel to each fuel cell; a current regulation portion regulating an electric current flowing from the fuel cell stack in such a way that an output voltage of the fuel cell stack is a predetermined set voltage; a voltage detection portion detecting an output voltage of each fuel cell; a fuel-supply control portion regulating a fuel supply to each fuel cell by the fuel supply portion in such a way that the difference decreases between an output voltage of each fuel cell detected by the voltage detection portion; a fuel-stoichiometric ratio detection portion detecting a fuel stoichiometric ratio of the fuel cell stack; and a fuel-stoichiometric ratio control portion regulating the set voltage in such a way that a fuel stoichiometric ratio detected by the fuel-stoichiometric ratio detection portion is a target fuel stoichiometric ratio set in advance. | 12-18-2008 |
20090011289 | DIRECT OXIDATION FUEL CELL SYSTEMS WITH REGULATED FUEL CONCENTRATION AND OXIDANT FLOW - A direct oxidation fuel cell (DOFC) system, comprises at least one fuel cell assembly including a cathode and an anode with an electrolyte positioned therebetween; a source of liquid fuel in fluid communication with an inlet of the anode; an oxidant supply in fluid communication with an inlet of the cathode; a liquid/gas (L/G) separator in fluid communication with outlets of the anode and cathode for: (1) receiving unreacted fuel and liquid and gaseous products, and (2) supplying a solution of fuel and liquid product to the anode inlet; and a control system for measuring the amount of liquid product and controlling oxidant stoichiometry of the system operation in response to the measured amount of liquid product. Alternatively, the control system controls the concentration of the liquid fuel in the solution supplied to the anode inlet, based upon the system operating temperature or output power. | 01-08-2009 |
20100119891 | METHOD FOR OPERATING FUEL CELL AND FUEL CELL SYSTEM - A method for operating a direct methanol fuel cell is provided. The fuel cell includes a fuel cell main body having a fuel electrode and an air electrode disposed in opposing positions on either side of an electrolyte film. In this method, an aqueous methanol solution is supplied directly to the fuel electrode. A quantity of the aqueous methanol solution supplied is controlled in accordance with an electric current value drawn from the fuel cell main body so as to minimize a quantity of unused methanol within a discharge fluid discharged from the fuel electrode. | 05-13-2010 |
20100119915 | METHOD FOR OPERATING FUEL CELL AND FUEL CELL SYSTEM - A method for operating a direct methanol fuel cell is provided. The fuel cell includes a fuel cell main body having a fuel electrode and an air electrode disposed in opposing positions on either side of an electrolyte film. In this method, an aqueous methanol solution is supplied directly to the fuel electrode. A quantity of the aqueous methanol solution supplied is controlled in accordance with an electric current value drawn from the fuel cell main body so as to minimize a quantity of unused methanol within a discharge fluid discharged from the fuel electrode. | 05-13-2010 |
Masahiro Takada, Shizuoka-Ken JP
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20100052616 | SECONDARY CELL REPLACING METHOD - In a pre-replacement process, a replacement battery module is provided with a memory effect before being dispatched, by performing at least one of the process of performing a cyclic charge/discharge operation on the replacement battery module while limiting the width of SOC change to an intermediate range, and the process of setting an initial SOC and then letting the replacement battery module stand for a predetermined time in an environment of temperature above normal temperature. This pre-replacement process substantially eliminates the difference between the voltage characteristic of the replacement battery module yet to be used and the voltage characteristic of a battery module having a history of use, thereby achieving a uniform voltage characteristic of a battery pack as a whole. | 03-04-2010 |
Masahiro Takada, Kosai-Shi JP
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20080277240 | Driving force transmitting device - A driving force transmitting devices is able to engage a main clutch with a small amount of hydraulic pressure. The driving force transmitting device includes an input shaft and an output shaft, and a main clutch. The device is formed of a primary clutch that intermittently transmits the driving force transmitted from the input shaft, a hydraulic pump that generates a hydraulic pressure, a piston that presses the primary clutch by the hydraulic pressure by the hydraulic pump, and a cam mechanism that presses the main clutch with a press-contact force amplified more than the press-contact force of the piston by utilizing the driving force from the input shaft through the primary clutch, so as to engage the main clutch. | 11-13-2008 |
Masahiro Takada, Tokyo JP
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20120066713 | TRAIN-MOUNTED CONTENT DELIVERY SYSTEM AND METHOD OF DISPLAYING TRAIN CONTENT INFORMATION - A train-mounted content delivery system includes a video information delivery apparatus that performs delivery control for advertisement/guidance image content and a display control apparatus that stores service image content generated based on train information from a train information apparatus, accumulates advertisement/guidance image content delivered from the video information delivery apparatus, and controls, based on a display schedule created by the video information delivery apparatus, display of a service image and an advertisement/guidance image that should be displayed on displays. The video information delivery apparatus includes a service image scheduler that manages the service image content and an advertisement/guidance image scheduler that manages the advertisement/guidance image content. Switching from the service image to the advertisement/guidance image or switching from the advertisement/guidance image to the service image in the displays is executed according to the control by the service image scheduler. | 03-15-2012 |
20120076484 | IMAGING APPARATUS - An imaging apparatus includes: an image-pickup lens; a shutter partitioned into a plurality of sections along a first direction and allowed to open and close for each of the plurality of sections; a stop adjusting an amount of light; and a drive section driving the shutter and the stop. The drive section controls the shutter in such a manner that any one of the sections of the shutter is opened and the remaining sections are closed, and drives the stop in such a manner that passage of a flux of light through the open section is limited to a larger extent in a second direction than in the first direction, the second direction being orthogonal to the first direction. | 03-29-2012 |