Abstract: In an X-ray tube, a rotary anode formed into a hollow disk-like shape is fixedly supported by a rotating body formed into a hollow cylindrical shape. A fixed shaft has fixed ends, columnar bearing portions and a disk part, and a flow path of a cooling medium formed along a central axis thereof. The bearing portions are inserted into the rotating body with a first gap between the columnar bearing portion and the rotating body, so that the rotating body is rotatably supported. The disk part is arranged in the rotary anode with a second gap between the disk part and the rotary anode. The first and second gaps are filled with a lubricant, bearing grooves are formed in the bearing portion, thereby forming dynamic pressure bearings, and a center of gravity of the rotary anode is arranged between the first and second dynamic pressure bearings.

Abstract: A rotating anode X-ray tube includes a fixed body having a radial sliding bearing surface and a channel therein through which a coolant flows, a rotor including a discoid large-diameter portion, which has a recess fitted with one end portion of the fixed body with a clearance therebetween and constitutes an anode target, and a small-diameter portion, which has on an inner surface thereof a radial sliding bearing surface which faces the aforesaid radial sliding bearing surface with a clearance, and is united with the large-diameter portion at one end portion thereof, a lubricant filling the clearances, a cathode arranged opposite to the anode target, and a vacuum envelope which contains the fixed body, the rotor, the lubricant and the cathode, and fixes the fixed body at another end portion of the fixed body situated opposite the one end portion of the fixed body fitted in the recess.

Abstract: In a rotary anode X-ray tube, a disc portion is fitted into a rotary anode with a first gap therebetween and a fixed shaft is fitted into a rotary shaft to support the anode with a second gap therebetween. The disc portion and the fixed shaft are formed integral with each other to have a hollow portion therein. A cooling liquid is allowed to flow through the hollow portion. A liquid metal is filled in the first and second gaps. Dynamic pressure type bearings is formed in the second gap. A passage is formed to directly communicate the first gap to the second gap, whereby the liquid metal being directly supplied from the second gap to the first gap. Thus, the liquid metal can be fed rapidly and surely into the gap between the anode target and a cooling vessel.

Abstract: To provide a catalyst for a fuel cell that has a high oxygen reduction activity and is manufactured at low cost and a fuel cell that has a high power generation efficiency and is manufactured at low cost. As a catalyst for a fuel cell that reduces an oxidizing gas, a catalyst for a fuel cell that contains palladium at least partially oxidized is used. In a fuel cell having an anode that oxidizes a fuel, a cathode that reduces an oxidizing gas and a solid polymer electrolyte membrane disposed between the anode and the cathode, a palladium oxide is used as a cathode catalyst.

Abstract: According to the present invention, it is possible to provide a catalyst which includes metal clusters containing a non-platinum element as the catalyst active ingredient, these metal clusters having species of a metal having different valences, and exhibits an improved electrode performance per unit price of the used metal, compared to catalysts using platinum. When this catalyst is applied to an electrode catalyst for fuel cell, a low-cost fuel cell system can be realized without using expensive platinum as the active ingredient. This catalyst can be applied to DMFC and PEFC fuel cells.

Abstract: A cutter machine has a knife holder 13 mounted onto a cutter shaft 6 at the center portion, wherein a material to be cut is cut with knives 15 mounted onto the outer circumference of the knife holder 13 by rotating the knife holder 13 around the cutter shaft 6. The knife holder 13 is separated into a fixing member 17 mounted onto the cutter shaft 6 and a mounting member 18 onto which the knives 15 are mounted. The mounting member 18 is pivotally supported around two axes with respect to the fixing member 17. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives, thereby enabling a satisfactory cutting to be obtained.

Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.

Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.

Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.

Abstract: In a rotary anode type X-ray tube, a rotary anode and a rotary structure supporting the anode are arranged within the vacuum envelope. A stationary shaft has a middle section which is fitted into a cylindrical portion of the rotary structure, and a dynamic pressure type radial bearing is arranged between the cylindrical portion and the middle section. The stationary shaft also has a first section between one end of the middle section and one end of the stationary shaft, and a second section between the other end of the middle section and the other end of the stationary shaft, which are fixed to the vacuum envelope. A transverse stiffness of the second section is set to be larger than a transverse stiffness of the first section, and a center of gravity is positioned in the middle section.

Abstract: A cutter machine having a knife holder 13 mounted onto a cutter shaft 6 at the center portion, wherein a material to be cut is cut with knives 15 mounted onto the outer circumference of the knife holder 13 by rotating the knife holder 13 around the cutter shaft 6, characterized in that the knife holder 13 is separated into a fixing member 17 mounted onto the cutter shaft 6 and a mounting member 18 onto which the knives 15 are mounted, wherein the mounting member 18 is pivotally supported around more than two axes with respect to the fixing member 17. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives without any usage of the resilient effect resulting from a gum bush, a metal plate or the like, thereby enabling a satisfactory cutting to be obtained.

Abstract: A die for manufacturing resin pellets capable of processing a die plate easily, and achieving simplification of a construction of heat channels and enhancement of heating efficiency. A die 1 for manufacturing resin pellets provided with a number of nozzle orifices 7 in the outer surface of the die, there are provided a plurality of rows of heat channels 8 which extend in a direction crossing the resin channels 5 in the vicinity of the outer surface of the die and are arranged along the resin channels 5. At least one of an introducing course and a discharging course for a heat medium in the plurality of heat channels 8.

Abstract: A die for manufacturing resin pellets capable of processing a die plate easily, and achieving simplification of a construction of heat channels and enhancement of heating efficiency. A die 1 for manufacturing resin pellets provided with a number of nozzle orifices 7 in the outer surface of the die, there are provided a plurality of rows of heat channels 8 which extend in a direction crossing the resin channels 5 in the vicinity of the outer surface of the die and are arranged along the resin channels 5. At least one of an introducing course and a discharging course for a heat medium in the plurality of heat channels 8.

Abstract: The present invention provides a method and an apparatus for predicting and calculating an amount of harmful oxide such as NOx contained in an exhaust gas from a reference concentration of harmful oxide, which is previously determined by a type of fuel supplied to a fluidized bed combustor, an amount of change of an air ratio and an amount of change of a gas residence time to the conditions of a specific air ratio and gas residence time in the combustor, and injecting a treatment agent such as NH.sub.3 in an amount optimum to the predicted amount into an exhaust gas. With this arrangement, an amount of harmful oxide in the exhaust gas can be securely lowered to a target value.

Abstract: A filter member includes a breaker plate having an increased filtering area without any deterioration in screen back-up capability. This filter member is adapted to filter off impurities of resin melt and is disposed in a resin passage. The filter member includes a screen and a breaker plate for backing up the screen. The breaker plate has resin passageways in the form of elongated slits extending as intersecting the flow direction of resin material.

Abstract: A method of and apparatus for detecting an abnormality of a fluidized bed boiler is characterized in that an abnormality of the fluidized bed boiler is detected on the basis of a physical quantity related to a condition change of a gas existing in a space defined by a pressure vessel and the fluidized bed boiler accommodated within the pressure vessel.

Abstract: The receiver dryer includes a cylindrical body with fluid inlet and outlet ports that allow fluid communication between the interior of the body and the refrigeration circuit. The body includes a concave section. The concave section extends downwardly of the bottom portion of the body. A fluid outlet pipe extends into the interior of the concave portion. Therefore, the receiver dryer can reduce the refrigerant volume in the refrigeration circuit without decrease of the refrigerating capacity, since the receiver dryer promotes separation of liquid and gaseous refrigerant. Thus, the receiver dryer can be made compact.

Abstract: Method of burning a premixed gas and a combustor for practicing the method. A jet of the premixed gas is burnt from an inside to an outside of the jet to form a premix flame. A burned gas is mixed into the premixed gas from the outside of the jet. The burned gas is produced when premixed gas is burned.

Abstract: Method of burning a premixed gas and a combustor for practicing the method. A jet of the premixed gas is burnt from an inside to an outside of the jet to form a premix flame. A burned gas is mixed into the premixed gas from the outside of the jet. The burned gas is produced when premixed gas is burned.

Abstract: A filter member includes a breaker plate having an increased filtering area without any deterioration in screen back-up capability. This filter member is adapted to filter off impurities of resin melt and is disposed in a resin passage. The filter member includes a screen and a breaker plate for backing up the screen. The breaker plate has resin passageways in the form of elongated slits extending as intersecting the flow direction of resin material.