Hirofumi Fujiwara
Hirofumi Fujiwara, Ohtsu-Shi JP
Patent application number | Description | Published |
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20090009004 | BOOSTING CIRCUIT AND INTEGRATED CIRCUIT HAVING THE SAME - In a boosting circuit, a power supply section includes a first power supply configured to supply a first reference voltage and a second power supply configured to supply a second reference voltage. A boosting section includes boosting switches and boosting capacitors, and is configured to generate a boosted voltage to an output node by using the boosting switches and the boosting capacitors in response to the first reference voltage and the second reference voltage. A switching circuit is configured to connect the output node and one of the first power supply and the second power supply based on a difference between the first reference voltage and the second reference voltage. | 01-08-2009 |
Hirofumi Fujiwara, Kariya-Shi JP
Patent application number | Description | Published |
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20110297531 | HYDROGEN GENERATION DEVICE AND METHOD OF USING SAME - The present invention provides a hydrogen generation device using a photocatalyst to generate hydrogen from liquid water or water vapor and a method of using the same. The hydrogen generation device of the present invention has a water channel through which liquid water or water vapor flows, and which has an outer circumferential wall made at least in part of a transparent material; a hydrogen channel through which hydrogen flows and which is located at the inner circumference side of the water channel; a hydrogen separating membrane forming at least part of a wall between the water channel and hydrogen channel, separating hydrogen from the liquid water or water vapor in the water channel, and providing the hydrogen to the hydrogen channel; and a photocatalyst layer arranged on least at part of the water channel-side surface of the hydrogen separating membrane. | 12-08-2011 |
20110300065 | APPARATUS FOR PURIFYING HYDROGEN AND METHOD FOR USING THE SAME - An apparatus and method purify hydrogen from a mixed fluid containing gaseous hydrogen, gaseous oxygen, and liquid water. The apparatus has a mixed fluid channel through which the mixed fluid flows; a first gas channel through which a mixed gas containing gaseous hydrogen and gaseous oxygen flows; a second gas channel through which gaseous hydrogen or oxygen flows; a gas-liquid separating membrane forming a wall between the mixed fluid channel and the first gas channel, separating the mixed gas from the mixed fluid of the mixed fluid channel, and providing the separated mixed gas to the first gas channel; and a hydrogen or oxygen separating membrane forming a wall between the first gas channel and the second gas channel, separating gaseous hydrogen or oxygen from the mixed gas of the first gas channel, and providing the separated gaseous hydrogen or oxygen to the second gas channel. | 12-08-2011 |
20150288256 | COOLING STRUCTURE FOR SLIP RING DEVICE - There is provided a cooling structure whose performance for cooling ring members and brushes is enhanced. In a cooling structure applied to a slip ring device including ring members provided to an input shaft and brushes contacting with these ring members, the input shaft includes a shaft member where an external spline portion is formed, and a cylindrical member that is installed over the external circumference of the shaft member so that an internal spline portion formed on the cylindrical member is meshed with the external spline portion, and that the ring members are fixed to the cylindrical member. The internal spline portion is formed upon a portion of the inner circumferential surface of the cylindrical member that lies on the radially inward side of the ring members. | 10-08-2015 |
Hirofumi Fujiwara, Aichi JP
Patent application number | Description | Published |
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20150180313 | ROTATING ELECTRIC MACHINE - A rotating electric machine comprises: a rotating shaft; and a rotor which includes a conductor capable of generating a rotating magnetic field and is provided on a peripheral surface of the rotating shaft so as to be rotatable integrally therewith. The rotating shaft includes: an oil supply passage passing within the rotating shaft; and an oil supply hole which extends from the oil supply passage to the peripheral surface of the rotating shaft and opens opposite to the rotor. The rotor includes an oil passage which is disposed so as to face the peripheral surface of the rotating shaft and which communicates with the oil supply hole. | 06-25-2015 |
20150288120 | SLIP RING STRUCTURE - A slip ring structure for facilitating an adjusting operation after assembling is provided. | 10-08-2015 |
20150292463 | VEHICLE CONTROL DEVICE - An engine is started to meet the driver's benefit in a vehicle control device for executing a control for starting the engine automatically if the engine has not been started for a predetermined period. The vehicle control device | 10-15-2015 |
Hirofumi Fujiwara, Kariya-Shi, Aichi-Ken JP
Patent application number | Description | Published |
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20150311772 | SLIP RING DEVICE - There is provided a slip ring device in which three ring members through are provided so as to be lined up in sequence along an axial line of an input shaft and brushes contact with the ring members respectively, three inner bus bars are provided and are supported by a sleeve portion of the input shaft, and contacting groove portions are provided so as to dent in the radially outwards direction into the inner circumferential surfaces of the ring members and extend along the axial line direction, with one end portions of the inner bus bars being set into these contacting groove portions respectively. | 10-29-2015 |