Abstract: An electric tool to restrain stress concentration is provided. The electric tool includes a housing (7, 8), a motor (2), an anvil (5, 105), and an impact mechanism (4). The motor is accommodated in the housing and rotatable. The anvil supported by the housing and rotatable about an axis (A). The impact mechanism is configured to convert a rotational force generated by the motor into a rotational impact force about the axis, and to apply the rotational impact force to the anvil. The anvil includes a base portion (51), an end bit attachment portion (80, 180), and a connecting portion (90, 190). The base portion is rotatably supported by the housing. An end bit is attachable to the end bit attachment portion. The end bit attachment portion has a flat surface portion. The connecting portion integrally connects together the base portion and the end bit attachment portion. The connecting portion has a diameter gradually reduced in a direction from the base portion toward the end bit attachment portion.

Abstract: A microelectronic device including an isolation device. The isolation device includes a lower isolation element, an upper isolation element, and an inorganic dielectric plateau between the lower isolation element and the upper isolation element. The inorganic dielectric plateau contains an upper etch stop layer and a lower etch stop layer between the upper isolation element and the lower isolation element. The upper etch stop layer provides an end point signal during the plateau etch process which provides feedback on the amount of inorganic dielectric plateau which has been etched. The lower etch stop layer provides a traditional etch stop function to provide for a complete plateau etch and protection of an underlying metal bond pad. The inorganic dielectric plateau also contains alternating layers of high stress and low stress silicon dioxide, which provide a means of reinforcement of the inorganic dielectric plateau.

Abstract: A bogie frame includes a cross beam extending in a car width direction and including a car width direction middle portion at which a center pin arrangement space is formed. The cross beam includes a pair of pipe members extending in the car width direction and lined up so as to be located away from each other in a car longitudinal direction, and air spring seats provided at upper surfaces of car width direction end portions of the pair of pipe members. At least one of the pair of pipe members includes a curved portion at a car width direction middle portion thereof, the curved portion projecting outward in the car longitudinal direction such that a clearance between the pair of pipe members increases. The center pin arrangement space is formed between the pair of pipe members by the curved portion.

Abstract: A railcar bogie includes: a cross beam extending in a car width direction; a first traction motor supported by a first car longitudinal direction portion of the cross beam; a second traction motor supported by a second car longitudinal direction portion of the cross beam; and a coupling member arranged under the cross beam and between the first traction motor and the second traction motor and coupling the first traction motor and the second traction motor to each other.

Abstract: Audio signal processing that satisfies both sound quality and cost is enabled. A processing unit that performs processing based on an output audio signal of a first microphone unit focusing on sound quality and an output audio signal of a second microphone unit focusing on cost is included. For example, the processing performed by the processing unit includes processing of obtaining a beamforming output and processing of obtaining a sound source separation output. Furthermore, for example, the processing performed by the processing unit may include processing of generating a first audio signal on the basis of an output audio signal of the first microphone and processing of generating a second audio signal on the basis of output audio signals of a plurality of the second microphone units.

Abstract: A radiant heat protection device, a radiant heat protection method, and a service vehicle include a radiant heat reflector (51) having a reflective surface (51a) that reflects radiant heat (H), a coolant retainer (52) disposed on a back surface (51b) of the reflective surface (51a) of the radiant heat reflector (51) and capable of retaining coolant (C), and a coolant feed device (53) configured to feed the coolant (C) to the coolant retainer (52).

Abstract: A structure equipped with a fuel cell system, wherein the structure comprises: a skirt configured to form an accumulation space between a bottom of the structure and the ground, an air supplier configured to supply off-gas, which is discharged from the fuel cell system, to at least one space selected from the group consisting of the accumulation space and an internal space of the skirt, and a pressure discharger configured to discharge pressure accumulated in the accumulation space to outside of the skirt from a lower end of the skirt, and wherein lift is imparted to the structure by supplying a predetermined amount of the off-gas from the air supplier to at least one space selected from the group consisting of the accumulation space and the internal space of the skirt.

Abstract: An axle box suspension of a railcar includes: a coupler extending from the axle box in a car longitudinal direction and including a tubular portion at a tip end portion of the coupler, the tubular portion opens toward both sides in a car width direction, the coupler coupling the axle box and a bogie frame; a core rod inserted into an internal space of the tubular portion, a pair of protruding portions provided at both respective sides of the core rod in the car width direction; an elastic bushing interposed between the tubular portion and the core rod; a pair of receiving seats at the bogie frame, including a pair of recess portions and a pair of groove portions, a pair of lids supporting the pair of protruding portions fitted into the pair of groove portions, and fasteners fixing the lids to the receiving seats.

Abstract: A railcar bogie includes: a cross beam extending in a car width direction; a first traction motor supported by a first car longitudinal direction portion of the cross beam; a second traction motor supported by a second car longitudinal direction portion of the cross beam; and a coupling member arranged under the cross beam and between the first traction motor and the second traction motor and coupling the first traction motor and the second traction motor to each other.

Abstract: A bogie frame includes a cross beam extending in a car width direction and including a car width direction middle portion at which a center pin arrangement space is formed. The cross beam includes a pair of pipe members extending in the car width direction and lined up so as to be located away from each other in a car longitudinal direction, and air spring seats provided at upper surfaces of car width direction end portions of the pair of pipe members. At least one of the pair of pipe members includes a curved portion at a car width direction middle portion thereof, the curved portion projecting outward in the car longitudinal direction such that a clearance between the pair of pipe members increases. The center pin arrangement space is formed between the pair of pipe members by the curved portion.

Abstract: A railcar bogie includes a plate spring supported by a pair of axle boxes arranged away from each other in a car longitudinal direction, the plate spring supporting a cross beam while being pressed by a pressing member of a bogie frame from above such that the pressing member is separable from the plate spring, at least a lower surface of the plate spring containing resin. The lower surface of the plate spring includes an inclined surface inclined with respect to a horizontal direction when viewed from a car width direction. The bogie frame includes at least one lifting supporting portion, the at least one lifting supporting portion including a supporting surface, the supporting surface being opposed to the inclined surface of the plate spring from below with a gap and inclined along the inclined surface of the plate spring.

Abstract: An elastic bushing device of a traction device includes: an outer tube supported by a bogie; an inner tube into which a center pin is fitted, the inner tube being arranged at a radially inner side of the outer tube so as to be spaced apart from the outer tube and also arranged so as to be located higher in position than the outer tube; and an elastic body sandwiched between the inner tube and the outer tube. An outer peripheral surface, opposed to the elastic body, of the inner tube is inclined downward. An inner peripheral surface, opposed to the elastic body, of the outer tube is inclined upward. The elastic body has such a shape that a surface thereof located close to the inner tube is located higher in position than a surface thereof located close to the outer tube.

Abstract: An axle box suspension includes: a coupler extending from an axle box in a car longitudinal direction and including a tubular portion at an end portion of the coupler, the tubular portion being open toward both sides in a car width direction; a core rod inserted into an internal space of the tubular portion, a pair of protruding portions being provided at both sides of the core rod in the car width direction; an elastic body interposed between the tubular portion and the core rod; a pair of receiving seats provided at the bogie frame and including a pair of groove portions which are open toward the car width direction and an upper side; a pair of lids pressing, from above, the pair of protruding portions fitted into the pair of groove portions from above; and fasteners fixing the lids to the receiving seats.

Abstract: A railcar bogie frame includes: a pair of cross beam main bodies; longitudinal members located at both respective car width direction side portions of the bodies, the members perpendicular to the bodies and including respective insertion spaces, the spaces located between the bodies and extending in the car width direction; lower plates at both car width direction side portions and extending between them; lateral members inserted through the insertion spaces and extending in the car width direction, the lateral members joined to the lower plates from above and joined to edge portions of the longitudinal members form the spaces. Each lateral member includes: a columnar member including an inserting space into a tubular portion is inserted, the tubular portion projecting downward from a bottom wall portion of an air spring; and a pair of reinforcing members adjacently arranged at both sides of the columnar member in the car width direction.

Abstract: A railcar bogie includes a plate spring supported by a pair of axle boxes arranged away from each other in a car longitudinal direction, the plate spring supporting a cross beam while being pressed by a pressing member of a bogie frame from above such that the pressing member is separable from the plate spring, at least a lower surface of the plate spring containing resin. The lower surface of the plate spring includes an inclined surface inclined with respect to a horizontal direction when viewed from a car width direction. The bogie frame includes at least one lifting supporting portion, the at least one lifting supporting portion including a supporting surface, the supporting surface being opposed to the inclined surface of the plate spring from below with a gap and inclined along the inclined surface of the plate spring.

Abstract: An axle box suspension of a railcar includes: a coupler extending from the axle box in a car longitudinal direction and including a tubular portion at a tip end portion of the coupler, the tubular portion opens toward both sides in a car width direction, the coupler coupling the axle box and a bogie frame; a core rod inserted into an internal space of the tubular portion, a pair of protruding portions provided at both respective sides of the core rod in the car width direction; an elastic bushing interposed between the tubular portion and the core rod; a pair of receiving seats at the bogie frame, including a pair of recess portions and a pair of groove portions, a pair of lids supporting the pair of protruding portions fitted into the pair of groove portions, and fasteners fixing the lids to the receiving seats.

Abstract: An axle box suspension includes: a coupler extending from an axle box in a car longitudinal direction and including a tubular portion at an end portion of the coupler, the tubular portion being open toward both sides in a car width direction; a core rod inserted into an internal space of the tubular portion, a pair of protruding portions being provided at both sides of the core rod in the car width direction; an elastic body interposed between the tubular portion and the core rod; a pair of receiving seats provided at the bogie frame and including a pair of groove portions which are open toward the car width direction and an upper side; a pair of lids pressing, from above, the pair of protruding portions fitted into the pair of groove portions from above; and fasteners fixing the lids to the receiving seats.

Abstract: A railcar bogie includes a link mechanism configured to suppress displacement of an on-board unit attaching portion, the displacement being caused by an operation of a suspension. The link mechanism includes: a first link including the on-board unit attaching portion and a first pivot portion pivotably coupled to an axle box or a member that is displaced integrally with the axle box; and a second link including a second and third pivot portion, the second pivot portion being pivotably coupled to a bogie frame or member that is displaced integrally with the bogie frame, the third pivot portion being pivotably coupled to the first link. The on-board unit attaching portion is arranged at a bogie outer side of a center of an axle in a car longitudinal direction. The second pivot portion is arranged at a bogie middle side of the center of the axle in the car longitudinal direction.