Abstract: A rotary electrical apparatus includes a housing, a stator including a center axis inclined by a predetermined angle relative to a horizontal direction in a case where the housing is fixed to a mounting member, a rotor, and an oil stored at a lower side within the housing relative to the center axis and functioning as at least one of a cooling oil, a lubricating oil, and an operating oil. The housing includes an oil inlet port and an oil discharge port allowing the oil to be discharged once a predetermined amount of the oil is stored within the housing, the oil discharge port being displaced from a first oil passage on which the oil supplied from the oil inlet port moves downward along an inner peripheral wall surface of the housing in a state where the housing is held so that the center axis is arranged to be horizontal.

Abstract: A clutch device for a vehicle includes an input shaft, an output shaft coaxially arranged with a rotational axis of the input shaft, first clutch plates, second clutch plates, a piston fitted to a cylindrical portion integrally formed with the output shaft or the input shaft, an elastic member arranged between the piston and the cylindrical portion, a hydraulic chamber defined by the cylindrical portion and the piston, a canceller chamber defined by the cylindrical portion and the piston to connect to an outer side of the cylindrical portion via a discharge hole formed at a portion of the cylindrical portion, the portion being located at a predetermined radial distance from the rotational axis, and a throttle hole formed in a portion of the piston to connect the hydraulic chamber to the canceller chamber, the portion being located at a radially inward side of the portion of the cylindrical portion.

Abstract: A clutch device for a vehicle includes an input shaft, an output shaft coaxially arranged with a rotational axis of the input shaft, first clutch plates, second clutch plates, a piston fitted to a cylindrical portion integrally formed with the output shaft or the input shaft, an elastic member arranged between the piston and the cylindrical portion, a hydraulic chamber defined by the cylindrical portion and the piston, a canceller chamber defined by the cylindrical portion and the piston to connect to an outer side of the cylindrical portion via a discharge hole formed at a portion of the cylindrical portion, the portion being located at a predetermined radial distance from the rotational axis, and a throttle hole formed in a portion of the piston to connect the hydraulic chamber to the canceller chamber, the portion being located at a radially inward side of the portion of the cylindrical portion.

Abstract: A rotary electrical apparatus includes a housing, a stator including a center axis inclined by a predetermined angle relative to a horizontal direction in a case where the housing is fixed to a mounting member, a rotor, and an oil stored at a lower side within the housing relative to the center axis and functioning as at least one of a cooling oil, a lubricating oil, and an operating oil. The housing includes an oil inlet port and an oil discharge port allowing the oil to be discharged once a predetermined amount of the oil is stored within the housing, the oil discharge port being displaced from a first oil passage on which the oil supplied from the oil inlet port moves downward along an inner peripheral wall surface of the housing in a state where the housing is held so that the center axis is arranged to be horizontal.