Abstract: Provided are a boron nitride powder having a relatively small particle size, in which an amount of metal impurities present on a surface of the boron nitride powder is significantly reduced, and extremely high purity is achieved, and a method for producing the boron nitride powder. A hexagonal boron nitride powder has an average particle size (D50) of 2.0 to 6.0 ?m and a specific surface area measured by a BET method of 4 to 12 m2/g, in which a concentration of a calcium element is 1 ppm or less, a concentration of a silicon element is 5 ppm or less, a concentration of a sodium element is 5 ppm or less, and a concentration of an iron element is 1 ppm or less on a surface of hexagonal boron nitride particles constituting the powder, the hexagonal boron nitride powder preferably has an average aspect ratio (major axis/thickness) of 1 to 7, and is useful as a filler for resin.

Abstract: A sealed cell includes a bottomed cylindrical outer casing can. The outer casing can is formed by nickel-plated iron, and a lead connected to one of a positive electrode and a negative electrode, and the outer casing can, are welded by a welding part formed from the outside surface of the outer casing can toward the lead. The welding part is formed by molten traces and has a first layer and a second layer having a higher nickel concentration than the first layer. The first layer is formed from the lead through to the inside of the outer casing can, the second layer is formed so as to adjoin the first layer on the outside surface side of the outer casing can, and the whole of the first layer is covered with the second layer when the welding part is viewed from the outside of the outer casing can.

Abstract: A liquid level indicating device includes a moving member which is arranged in a liquid tank storing a cooling liquid and moves vertically in conjunction with variation in a liquid level of the cooling liquid, a string member having one end portion connected to the moving member, the string member being configured to be bendable and non-extendable in a longitudinal direction, an indicator connected to the other end portion of the string member and which indicates a height position of the moving member as a remaining amount of the cooling liquid by operating in conjunction with movement of the moving member through the string member, and a tube member which is configured to be bendable and non-extendable in the longitudinal direction, has the string member passed therethrough, and connects the liquid tank and the indicator.

Abstract: A sealed cell includes a bottomed cylindrical outer casing can. The outer casing can is formed by nickel-plated iron, and a lead connected to one of a positive electrode and a negative electrode, and the outer casing can, are welded by a welding part formed from the outside surface of the outer casing can toward the lead. The welding part is formed by molten traces and has a first layer and a second layer having a higher nickel concentration than the first layer. The first layer is formed from the lead through to the inside of the outer casing can, the second layer is formed so as to adjoin the first layer on the outside surface side of the outer casing can, and the whole of the first layer is covered with the second layer when the welding part is viewed from the outside of the outer casing can.

Abstract: A clutch that includes a friction plate; a separator plate; a clutch hub; and a piston that presses the friction plate and the separator plate, wherein the clutch hub includes a hub on which an inner peripheral portion of the friction plate or the separator plate is fitted, a tubular shaft that movably supports the piston, and an engagement oil chamber defining wall that together with the piston defines an engagement oil chamber to which an engagement oil pressure is supplied, the hub is spline-fitted on a gear of a planetary gear so as to rotate with the gear, and the tubular shaft is rotatably supported by a central shaft and is fitted by a spigot joint in the gear.

Abstract: A brake of an automatic transmission includes: first and second recessed portions and formed in a center support; a first piston having a first pressure-receiving portion that is disposed in the first recessed portion and defines a first engagement oil chamber and having a plate-pressing portion that presses friction plates and separator plates; a second piston having a second pressure-receiving portion that is disposed in the second recessed portion and defines a second engagement oil chamber and a piston-pressing portion that presses the first piston by supply of oil pressure to the second engagement oil chamber; and a return spring that biases the first piston so that the first piston moves away from the friction plates and the separator plates.

Abstract: A liquid level indicating device includes a moving member which is arranged in a liquid tank storing a cooling liquid and moves vertically in conjunction with variation in a liquid level of the cooling liquid, a string member having one end portion connected to the moving member, the string member being configured to be bendable and non-extendable in a longitudinal direction, an indicator connected to the other end portion of the string member and which indicates a height position of the moving member as a remaining amount of the cooling liquid by operating in conjunction with movement of the moving member through the string member, and a tube member which is configured to be bendable and non-extendable in the longitudinal direction, has the string member passed therethrough, and connects the liquid tank and the indicator.

Abstract: Protruding portions have an agitation face on the side surface thereof to agitate or dam hydraulic oil. An oil chamber defining portion has a supply hole that is allowed to supply the hydraulic oil from outside a hydraulic oil chamber by communicating with the hydraulic oil chamber from the rotational center side. When the protruding portions abut against the oil chamber defining portion so that the capacity of the hydraulic oil chamber is minimized, the supply hole faces, in a radial direction, a flow passage that is surrounded by circumferentially adjacent ones of the protruding portions, an oil chamber defining portion, and a piston.

Abstract: A clutch that includes a friction plate; a separator plate; a clutch hub; and a piston that presses the friction plate and the separator plate, wherein the clutch hub includes a hub on which an inner peripheral portion of the friction plate or the separator plate is fitted, a tubular shaft that movably supports the piston, and an engagement oil chamber defining wall that together with the piston defines an engagement oil chamber to which an engagement oil pressure is supplied, the hub is spline-fitted on a gear of a planetary gear so as to rotate with the gear, and the tubular shaft is rotatably supported by a central shaft and is fitted by a spigot joint in the gear.

Abstract: A brake of an automatic transmission includes: first and second recessed portions and formed in a center support; a first piston having a first pressure-receiving portion that is disposed in the first recessed portion and defines a first engagement oil chamber and having a plate-pressing portion that presses friction plates and separator plates; a second piston having a second pressure-receiving portion that is disposed in the second recessed portion and defines a second engagement oil chamber and a piston-pressing portion that presses the first piston by supply of oil pressure to the second engagement oil chamber; and a return spring that biases the first piston so that the first piston moves away from the friction plates and the separator plates.

Abstract: A non-human mammal which is usefully and effectively applicable to the screening of a substance to be employed for preventing and treating heart failure. This animal is an animal model of heart failure prepared by starting both coronary stenosis and the stenosis of arteries other than the coronary artery and the abdominal artery of a non-human mammal within the same period of time.

Abstract: A non-human mammal which is usefully and effectively applicable to the screening of a substance to be employed for preventing and treating heart failure. This animal is an animal model of heart failure prepared by starting both coronary stenosis and the stenosis of arteries other than the coronary artery and the abdominal artery of a non-human mammal within the same period of time.