Patent application number | Description | Published |
20090246585 | CELL STRUCTURE OF FUEL CELL AND FUEL CELL STACK - There is provided a cell structure of a fuel cell which does not require a bolt, a seal member, or the like for fastening components of the fuel cell by a staked body, which can apply a stable fastening pressure to the entire surfaces of the components to reduce a contact resistance, and which can realize the down-sizing of the fuel cell; and a fuel cell stack. A cell structure of a fuel cell includes: a fuel cell component including at least an electrolyte membrane having reaction layers formed on both surfaces thereof and a member for allowing gas to diffuse and collecting current at a time of power generation; and an electrode substrate for taking out electric power, on which the fuel cell component is stacked, wherein the electrode substrate includes, as a structural portion for applying a surface pressure to the fuel cell component, a flow path or a closed space which is formed in the electrode substrate, for applying the surface pressure by allowing a fuel gas to flow in the flow path or the closed space. | 10-01-2009 |
20090269633 | HYDROGEN GAS SUPPLY DEVICE AND FUEL CELL APPARATUS - The hydrogen gas supply device capable of detecting that the hydrogen gas storage volume of a tank has decreased to a predetermined value or less including a plurality of tanks each filled with a hydrogen storage alloy, an information obtaining device for obtaining information on the physical quantity of the plurality of tanks different from each other in hydrogen storage volume, and a signal outputting device for outputting information signal on the remaining amount of the hydrogen gas in the tanks by determining a hydrogen gas storage status of the plurality of tanks from information on the physical quantity, and detecting the decrease of the remaining amount of the hydrogen gas in all tanks in use to a predetermined value or less from the hydrogen gas storage status of the plurality of tanks. | 10-29-2009 |
20120121069 | X-RAY GENERATING APPARATUS AND METHOD OF DRIVING X-RAY TUBE - An inverter circuit is shared by respective drive circuits that supply a predetermined voltage to a lens electrode and a grid electrode, or to a lens electrode and a cathode electrode. A DC voltage obtained by full-wave rectifying a pulse train output from the inverter circuit is supplied to the lens electrode, a DC voltage obtained by half-wave rectifying a pulse train output from the inverter circuit is supplied to the grid electrode or cathode electrode. At times of a first operation and a last operation of the inverter circuit during a period of generating X-rays, operations of the inverter circuit are controlled such that a trans circuit outputs a negative polarity voltage to the full-wave rectifying circuit and the half-wave rectifying circuit, respectively. | 05-17-2012 |
20120307974 | X-RAY TUBE AND RADIATION IMAGING APPARATUS - An X-ray tube comprises: an envelope which has a cathode at one end and an anode at another end of a barrel of a tubular insulating tube and which has a sealed interior; an electron gun which is arranged inside the envelope and has a shape that protrudes from the cathode; and a target which is electrically connected to the anode and generates X-rays when being irradiated with electrons emitted from the electron gun. With reference to an end position that is a projection of a position of an end on the anode side of the electron gun onto an inner wall of the insulating tube, a mean wall thickness of the barrel is greater on the cathode side than on the anode side. | 12-06-2012 |
20120318987 | RADIOACTIVE RAY GENERATING APPARATUS AND RADIOACTIVE RAY IMAGING SYSTEM - A radioactive ray generating apparatus includes a second shielding member, a target, and a first shielding member, which are sequentially disposed from an electron emission source side. A shortest distance from a maximum radiation intensity portion of the target to the first shielding member is shorter than a shortest distance from the maximum radiation intensity portion of the target to the second shielding member. | 12-20-2012 |
20130016810 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUSAANM Tamura; MikiAACI Kawasaki-shiAACO JPAAGP Tamura; Miki Kawasaki-shi JPAANM Aoki; ShujiAACI Yokohama-shiAACO JPAAGP Aoki; Shuji Yokohama-shi JPAANM Yanagisawa; YoshihiroAACI Fujisawa-shiAACO JPAAGP Yanagisawa; Yoshihiro Fujisawa-shi JPAANM Ueda; KazuyukiAACI TokyoAACO JPAAGP Ueda; Kazuyuki Tokyo JP - In a radiation imaging apparatus which comprises an envelope which has a first window for transmitting a radiation and is filled with an insulating liquid, a radiation tube in the envelope which has, at a position facing the first window, a second window for transmitting the radiation, and a shielding member, a solid insulating member is arranged between the shielding member and the inner wall of the envelope, an opening is formed at a position on the insulating member corresponding to the first window, and a shortest distance from the shielding member to the first window or the inner wall of the envelope through the opening of the insulating member without the insulating member is made longer than a shortest distance from the shielding member to the first window or the inner wall of the envelope through the insulating member, thereby improving withstand voltage performance without reducing an radiation amount. | 01-17-2013 |
20130016811 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUSAANM Ueda; KazuyukiAACI TokyoAACO JPAAGP Ueda; Kazuyuki Tokyo JPAANM Aoki; ShujiAACI Yokohama-shiAACO JPAAGP Aoki; Shuji Yokohama-shi JPAANM Yanagisawa; YoshihiroAACI Fujisawa-shiAACO JPAAGP Yanagisawa; Yoshihiro Fujisawa-shi JPAANM Tamura; MikiAACI Kawasaki-shiAACO JPAAGP Tamura; Miki Kawasaki-shi JP - In a construction having a radiation tube in an envelope filled with an insulating liquid, a radiation generating apparatus which realizes a miniaturization of the apparatus, an improvement of a withstanding voltage between the envelope and the radiation tube, and a decrease in attenuation amount of the radiation and a radiation imaging apparatus using the radiation generating apparatus are provided. The radiation generating apparatus has an envelope | 01-17-2013 |
20130016812 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS USING THE SAMEAANM Yanagisawa; YoshihiroAACI Fujisawa-shiAACO JPAAGP Yanagisawa; Yoshihiro Fujisawa-shi JPAANM Ueda; KazuyukiAACI TokyoAACO JPAAGP Ueda; Kazuyuki Tokyo JPAANM Tamura; MikiAACI Kawasaki-shiAACO JPAAGP Tamura; Miki Kawasaki-shi JPAANM Aoki; ShujiAACI Yokohama-shiAACO JPAAGP Aoki; Shuji Yokohama-shi JP - A radiation generating apparatus | 01-17-2013 |
20130034207 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS - The present invention relates to a radiation generating apparatus which includes an envelope provided with a first window through which radiation is transmitted, a radiation tube housed in the envelope and provided with a second window through which the radiation is transmitted, the second window being located at a position opposite the first window, and an insulating fluid adapted to fill between the inner wall of the envelope and the radiation tube. Plural plates are arranged side by side between the first window including its periphery and the second window including its periphery by overlapping one another via gaps. The gaps is formed among the plates, thereby the withstanding voltage between the first window and second window is made larger. | 02-07-2013 |
20130129045 | TRANSMISSION TYPE RADIATION GENERATING SOURCE AND RADIOGRAPHY APPARATUS INCLUDING SAME - A transmission type radiation generating device includes an electron emitting source; a substrate that transmits radiation; a target provided on a surface of the substrate facing the electron emitting source and configured to generate radiation when electrons emitted from the electron emitting source are applied thereto; a shield member having a radiation passage that allows the radiation transmitted through the substrate to pass therethrough, the shield member being connected to the substrate and including at least a forward shield portion that protrudes in a direction away from the electron emitting source with respect to the target; and an insulating fluid in contact with the forward shield portion. The shield member includes a low-melting-point metal or a low-melting point alloy provided at least in the forward shield portion. | 05-23-2013 |
20130230143 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS - A radiation generating apparatus | 09-05-2013 |
20130235975 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS - There is provided a radiation generating apparatus having a simple structure and capable of shielding unnecessary radiation, cooling a target, reducing the size and weight of the apparatus, and achieving higher reliability, and a radiation imaging apparatus having the same. A transmission type radiation tube is held inside a holding container filled with a cooling medium. The transmission type radiation tube includes an envelope having an aperture, an electron source arranged inside the envelope so as to face the aperture of the envelope, a target unit for generating a radiation responsive to an irradiation with an electron emitted from the electron source, and a shield member for shielding a part of the radiation emitted from the target unit. The cooling medium contacts at least a part of the shield member. | 09-12-2013 |
20140029725 | X-RAY GENERATOR AND X-RAY IMAGING APPARATUS INCLUDING THE SAME - Provided is an X-ray generator comprising an X-ray tube including a cylindrical body; an electron source in the body; a target at an end of the X-ray tube facing the electron source, the target generating X-rays by irradiation with electrons; a container in which the X-ray tube is arranged; insulating liquid filled between the X-ray tube and the container; and
| 01-30-2014 |
20140140486 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS - A radiation generating apparatus of the present invention includes an envelope | 05-22-2014 |
20140146943 | RADIATION GENERATOR - A radiation generator includes: a radiation tube configured to generate radiation by emitting electrons from a cathode through a grid to a target; a grid-voltage generating unit configured to apply an extraction voltage to the grid in response to an external request for radiation output; a cut-off voltage generating unit configured to generate a cut-off voltage applied to the grid so as to lower the potential of the grid relative to the potential of the cathode when there is no external request for the radiation output; and a detection unit configured to detect a decrease in the cut-off voltage, wherein the target is not irradiated by the electrons when the decrease in the cut-off voltage is detected. | 05-29-2014 |
20140153695 | RADIATION GENERATING APPARATUS AND RADIATION IMAGING APPARATUS - A radiation generating apparatus includes: an envelope | 06-05-2014 |
20140177796 | X-RAY TUBE - In an X-ray tube having an X-ray shielding member allowing an electron ray to pass through an electron passing hole toward a target, separately from the cathode-side opening of the electron passing hole, a gas exhaust path allowing communication between the inside and outside of the electron passing hole is provided so that gas molecules generated in the electron passing hole can be easily diffused out of the electron passing hole. The degradation of the cathode caused by accelerated collisions with the cathode, of cations generated by collisions of electrons with gas molecules generated in the electron passing hole by a desorption phenomenon due to electron ray irradiation to the target, is reduced. | 06-26-2014 |
20150030127 | MULTI-SOURCE RADIATION GENERATING APPARATUS AND RADIOGRAPHIC IMAGING SYSTEM - In a multi-source radiation generating apparatus including a plurality of combinations of a cathode and a target, an extraction electrode is disposed for a plurality of cathodes in common. When a potential of the extraction electrode is constant, potentials for the cathodes are selectively switched between a cutoff potential which is higher than the potential of the extraction electrode and an emission potential which is lower than the potential of the extraction electrode. | 01-29-2015 |