Abstract: An actuator whose total length can be reduced is provided. An actuator (2) includes: a casing (7); a hollow shaft (8) rotatably supported by the casing (7) via a bearing (9a, 9b), the hollow shaft (8) including a bottom portion (8b); a screw shaft (14) coupled to the bottom portion (8b) of the hollow shaft (8), the screw shaft (14) sharing a common center line with the hollow shaft (8); and a nut (15) threadedly connected to the screw shaft (14). The nut (15) is capable of moving in an axial direction of the screw shaft (14) to enter between the hollow shaft (8) and the screw shaft (14).

Abstract: A rubber composition manufacturing method comprises an operation in which at least rubber, silica, and silane coupling agent are kneaded in an internal kneader at not less than a temperature lower limit for a coupling reaction between the silica and the silane coupling agent to proceed. For at least a portion of time during which that operation is being carried out, a compressed gas is delivered to the kneading chamber while the ram is in a nonpressing state.

Abstract: An actuator whose total length can be reduced is provided. An actuator (2) includes: a casing (7); a hollow shaft (8) rotatably supported by the casing (7) via a bearing (9a, 9b), the hollow shaft (8) including a bottom portion (8b); a screw shaft (14) coupled to the bottom portion (8b) of the hollow shaft (8), the screw shaft (14) sharing a common center line with the hollow shaft (8); and a nut (15) threadedly connected to the screw shaft (14). The nut (15) is capable of moving in an axial direction of the screw shaft (14) to enter between the hollow shaft (8) and the screw shaft (14).

Abstract: A rubber composition manufacturing method in accordance with the present invention comprises an operation in which at least rubber, silica, and silane coupling agent are kneaded in an internal kneader while kneading temperature is controlled so as to suppress occurrence of a coupling reaction between the silica and the silane coupling agent, wherein for at least a portion of time during which the operation is being carried out, at least the rubber, the silica, and the silane coupling agent are kneaded while a ram of the internal kneader is in a nonpressing state.

Abstract: A suspension is provided which can not only generate a damping force between sprung mass and unsprung mass but also steer a wheel. A suspension includes: a shaft coupled to sprung mass of a vehicle, the shaft having a screw groove and a spline groove formed thereon; a ball screw nut assembled to the shaft via a ball; a ball spline nut assembled to the shaft via a ball; a ball screw-specific motor connected to the ball screw nut; a ball spline-specific motor connected to the ball spline nut; and a case coupled to unsprung mass of the vehicle, the case being configured to hold the ball screw-specific motor and the ball spline-specific motor. The ball spline-specific motor rotates the ball spline nut and the shaft relative to the case.

Abstract: A suspension is provided which can not only generate a damping force between sprung mass and unsprung mass but also steer a wheel. A suspension includes: a shaft coupled to sprung mass of a vehicle, the shaft having a screw groove and a spline groove formed thereon; a ball screw nut assembled to the shaft via a ball; a ball spline nut assembled to the shaft via a ball; a ball screw-specific motor connected to the ball screw nut; a ball spline-specific motor connected to the ball spline nut; and a case coupled to unsprung mass of the vehicle, the case being configured to hold the ball screw-specific motor and the ball spline-specific motor. The ball spline-specific motor rotates the ball spline nut and the shaft relative to the case.

Abstract: A rubber composition according to an embodiment includes: a rubber component comprising diene rubber; and fine particles which are formed of a specific polymer and have a glass transition point of ?70° C. to 0° C. The fine particles are fine particles formed of a (meth)acrylate polymer having a constitutional unit represented by formula (1) or formed of a polymer having a constitutional unit represented by formula (4). In formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 4 to 18 carbon atoms. In formula (4), at least one of R11, R12, R13, R14, R15, and R16 represents an aliphatic hydrocarbon group having 3 to 8 carbon atoms, and the remainder represents a hydrogen atom or an aliphatic hydrocarbon group having 1 or 2 carbon atoms.

Abstract: A rubber composition according to an embodiment includes: a rubber component comprising diene rubber; and fine particles which are formed of a specific polymer and have a glass transition point of ?70° C. to 0° C. The fine particles are fine particles formed of a (meth)acrylate polymer having a constitutional unit represented by formula (1) or formed of a polymer having a constitutional unit represented by formula (4). In formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alkyl group having 4 to 18 carbon atoms. In formula (4), at least one of R11, R12, R13, R14, R15, and R16 represents an aliphatic hydrocarbon group having 3 to 8 carbon atoms, and the remainder represents a hydrogen atom or an aliphatic hydrocarbon group having 1 or 2 carbon atoms.

Abstract: A run flat tire having a side reinforcing rubber part is disclosed. The side reinforcing rubber part is formed by a rubber composition having a ratio (M50H/M50N) of tensile stress (M50H) in 50% elongation at a measurement temperature of 100° C. to tensile stress (M50N) in 50% elongation at a measurement temperature of 23° C. of from 1.0 to 1.3. A ratio (M50H/M50F) of tensile stress (M50H) in 50% elongation at a measurement temperature of 100° C. of the rubber composition forming the side reinforcing rubber part to tensile stress (M50F) in 50% elongation at a measurement temperature of 100° C. of a rubber composition forming a bead filler is from 0.5 to 1.3.

Abstract: A method for producing a rubber composition that can improve wet grip performance is provided. The rubber composition includes 100 parts by mass of a rubber component, from 20 to 150 parts by mass of silica, and from 1 to 10 parts by mass of a polymer gel as crosslinked diene polymer particles, wherein from 30 to 90 parts by mass of at least one modified diene rubber selected from the group consisting of a styrene-butadiene rubber, a butadiene rubber and a natural rubber, each having introduced therein a functional group having an interaction with the silica, and from 70 to 10 parts by mass of an unmodified dine rubber are used as 100 parts by mass of the rubber component, and a polymer gel having a functional group which has an interaction with a functional group of the modified diene rubber is used as the polymer gel.

Abstract: A method for producing a rubber composition that can improve wet grip performance is provided. The rubber composition includes 100 parts by mass of a rubber component, from 20 to 150 parts by mass of silica, and from 1 to 10 parts by mass of a polymer gel as crosslinked diene polymer particles, wherein from 30 to 90 parts by mass of at least one modified diene rubber selected from the group consisting of a styrene-butadiene rubber, a butadiene rubber and a natural rubber, each haying introduced therein a functional group having an interaction with the silica, and from 70 to 10 parts by mass of an unmodified dine rubber are used as 100 parts by mass of the rubber component, and a polymer gel having a functional group which has an interaction with a functional group of the modified diene rubber is used as the polymer gel.

Abstract: A run flat tire having a side reinforcing rubber part is disclosed. The side reinforcing rubber part is formed by a rubber composition having a ratio (M50H/M50N) of tensile stress (M50H) in 50% elongation at a measurement temperature of 100° C. to tensile stress (M50N) in 50% elongation at a measurement temperature of 23° C. of from 1.0 to 1.3. A ratio (M50H/M50F) of tensile stress (M50H) in 50% elongation at a measurement temperature of 100° C. of the rubber composition forming the side reinforcing rubber part to tensile stress (M50F) in 50% elongation at a measurement temperature of 100° C. of a rubber composition forming a bead filler is from 0.5 to 1.3.

Abstract: A catalyst can be manufactured using a method which can include preparing a first aqueous solution including zirconium, filling the pores of the porous alumina with the aqueous solution by a pore-filling method using the capillary phenomenon, forming a zirconia layer in the pores of the porous alumina, preparing a second aqueous solution including noble metals, filling the pores of the porous alumina with the second aqueous solution by a pore-filling method using the capillary phenomenon, and drying and baking the porous alumina to carry the noble metals in the pores of the porous alumina formed with a zirconia layer.

Abstract: An exhaust gas purifying catalyst device, which can have high durability against vibration and high temperatures, can be configured to suppress the peeling of the catalyst layer from the catalyst carrier member during use. Additionally, the metallic catalyst can be easily recovered after use. According to the present disclosure, an exhaust gas purifying catalyst device can comprise a catalyst carrier member on which metallic catalyst for exhaust gas purification can be carried characterized in that the catalyst carrier member can be formed of a sheet-like catalyst carrier made by a wet paper-making method, and that the metallic catalyst can be carried as a catalyst layer on surfaces of the sheet-like catalyst carrier after the sheet-like catalyst carrier has been baked.

Abstract: A catalyst can be manufactured using a method which can include preparing a first aqueous solution including zirconium, filling the pores of the porous alumina with the aqueous solution by a pore-filling method using the capillary phenomenon, forming a zirconia layer in the pores of the porous alumina, preparing a second aqueous solution including noble metals, filling the pores of the porous alumina with the second aqueous solution by a pore-filling method using the capillary phenomenon, and drying and baking the porous alumina to carry the noble metals in the pores of the porous alumina formed with a zirconia layer.