Abstract: A grindstone includes abrasive grains and a binder for fixing the abrasive grains, and the binder contains a spherical filler for reinforcing the bonding material.

Abstract: The present invention has as its objects to provide beverages that contain hydroxytyrosol but are comfortable to drink, and to provide a method for reducing the hydroxytyrosol-derived harshness and off-flavor of a hydroxytyrosol-containing beverage. A beverage comprising 0.5 to 50 mg/100 mL of hydroxytyrosol, and further comprising ethanol and/or propylene glycol. A beverage comprising 0.5 to 50 mg/100 mL of hydroxytyrosol, and further comprising caffeine. A beverage comprising 0.5 to 50 mg/100 mL of hydroxytyrosol, and further comprising glucose and maltose at a (weight) ratio of [glucose]/[maltose] of 0.001 to 1.

Abstract: An electric power steering system includes elastic members arranged at respective axial ends of a first bearing by which a motor shaft that serves as a hollow shaft is rotatably supported and which elastically support the first bearing relative to a rack housing in the axial direction; and a support member disposed on the outer periphery of the first bearing to support the first bearing with displacement of the first bearing in the radial direction restricted. The motor shaft is disposed so as to move relative to the rack housing in the axial direction as the first bearing slides relative to the support member while elastically deforming the elastic members and a second bearing moves in the axial direction.

Abstract: In a ball screw mechanism, a retainer is provided between an outer circumference of a ball screw shaft and an inner circumference of a ball nut and has a plurality of retainer grooves arranged in the circumferential direction for retaining a plurality of rolling balls. Each retainer groove of the retainer takes a form that allows the rolling balls therein to move radially outward but restrains the rolling balls therein from moving radially inward. Therefore, in the ball screw mechanism and an electric power steering device incorporating the same, the movement of the retainer in radial directions can be restricted by the plurality of rolling balls which are rolled along ball rolling grooves spirally formed respectively on the outer circumference of the ball screw shaft and the inner circumference of the ball nut.

Abstract: In a ball screw mechanism, a retainer is provided between an outer circumference of a ball screw shaft and an inner circumference of a ball nut and has a plurality of retainer grooves arranged in the circumferential direction for retaining a plurality of rolling balls. Each retainer groove of the retainer takes a form that allows the rolling balls therein to move radially outward but restrains the rolling balls therein from moving radially inward. Therefore, in the ball screw mechanism and an electric power steering device incorporating the same, the movement of the retainer in radial directions can be restricted by the plurality of rolling balls which are rolled along ball rolling grooves spirally formed respectively on the outer circumference of the ball screw shaft and the inner circumference of the ball nut.

Abstract: An electric power steering device is provided which is excellent in the nature being mounted on a vehicle. The electric power steering device 1 comprises a rack shaft 20 constructed to be movable reciprocatively, a rack housing 10 receiving the rack shaft 20 therein, a sleeve 41 arranged coaxially around the rack shaft 20, a brushless motor 40 taking a generally cylindrical shape and constructed to rotate the sleeve 41, and a rotational angle sensor 50 constructed to detect the rotational angle of the brushless motor 40. The rack housing 10 has arranged thereon a power connecter 42 for supplying electric power to the brushless motor 40 and a sensor connecter 52 for outputting a detection signal of the rotational angle sensor 50. The power connecter 42 and the sensor connecter 52 are arranged to be shifted on the same side in the axial direction of the rack shaft 20 with respect to the brushless motor 40.

Abstract: An electric power steering device is provided which is excellent in the nature being mounted on a vehicle. The electric power steering device 1 comprises a rack shaft 20 constructed to be movable reciprocatively, a rack housing 10 receiving the rack shaft 20 therein, a sleeve 41 arranged coaxially around the rack shaft 20, a brushless motor 40 taking a generally cylindrical shape and constructed to rotate the sleeve 41, and a rotational angle sensor 50 constructed to detect the rotational angle of the brushless motor 40. The rack housing 10 has arranged thereon a power connecter 42 for supplying electric power to the brushless motor 40 and a sensor connecter 52 for outputting a detection signal of the rotational angle sensor 50. The power connecter 42 and the sensor connecter 52 are arranged to be shifted on the same side in the axial direction of the rack shaft 20 with respect to the brushless motor 40.