Abstract: A vehicle power transmission device includes a shaft assembly constituted by an electric-motor rotor shaft and a gear shaft. The shaft assembly includes a connection portion in an end portion of the gear shaft is introduced in an end portion of the rotor shaft. The connection portion includes a spline engagement portion, a fitting portion and a damper portion in which an elastic member is disposed between an outer circumferential surface of the gear shaft and an inner circumferential surface of the rotor shaft. The spline engagement portion, the fitting portion and the damper portion are arranged in this order as viewed in a direction away from another end portion of the rotor shaft toward another end portion of the gear shaft. A bearing supporting the shaft assembly is located in a position that overlaps with the connection portion as viewed in a radial direction of the shaft assembly.

Abstract: Provided is a connection member which is not limited by the material, the tube thickness, the tube diameter or the like of a suction tube and a discharge tube to be connected to a pump, and can eliminate troubles in the tube attachment. A connection member includes: a pump attachment part; a tube connecting part; and a flow passage defining part. At least a portion of each of the suction passage section and the discharge passage section of the flow passage defining part includes membranes deformable due to pressures of the liquid flowing in the suction passage section and the discharge passage section. The flow passage defining part has a shape allowing the flow passage defining part to be attached in an arrangement that the membranes face sensors for detecting a flow state of the liquid flowing in the suction passage section and the discharge passage section by deformation of the membranes.

Abstract: A drive device including a motor case, a first case, and a second case is provided. The motor case is configured to house a motor. The first case is configured to house a gear unit that is mechanically connected with the motor. The second case is configured to house an electric power conversion unit that is electrically connected with the motor. The first case and the second case are fastened to the motor case by a plurality of fastening members. The plurality of fastening members includes at least one common fastening member that concurrently fastens the first case and the second case to the motor case.

Abstract: To provide a silicon epitaxial wafer production method and a silicon epitaxial wafer in which the DIC defects can be suppressed, a silicon epitaxial wafer production method is provided, in which an epitaxial layer is grown in a vapor phase on a principal plane of a silicon single crystal wafer. The principal plane is a {110} plane or a plane having an off-angle of less than 1 degree from the {110} plane. The silicon epitaxial wafer production method includes setting a temperature of the silicon single crystal wafer to 1140° C. to 1165° C. and growing the epitaxial layer in the vapor phase at a growth rate of 0.5 ?m/min to 1.7 ?m/min.

Abstract: A ball bearing on one rotary shaft, out of a first rotary shaft and a second rotary shaft, on which a rotation member corresponding to a larger value of a ratio out of values of ratios of a rotation speed of a first rotation member and a rotation speed of a second rotation member relative to a rotation speed of a third rotation member is arranged does not include an inner race. Thereby, a ball PCD can be reduced while securing durability of a ball bearing on the one rotary shaft, and dragging loss between balls of the ball bearing and the inner race can be reduced. Since the ball bearing integrally configured with the rotary shaft is arranged on the one rotary shaft, reducing dragging loss of the ball bearing relatively largely reduces motive power loss on the third rotary shaft due to dragging loss of the ball bearing.

Abstract: An electric vehicle includes a mechanical-electrical integrated unit constituted by a drive apparatus and an electric-power control apparatus that are housed in a same casing. The drive apparatus includes a first electric motor, a second electric motor and a transmission device. The electric-power control apparatus is configured to control an electric power transmitted and received by the first and second electric motors. The electric-power control apparatus and the drive apparatus are housed in upper and lower casing portion of the casing, respectively. The second electric motor includes a stator core that is provided with a plurality of fastened portions, such that one of the plurality of fastened portions is disposed in a position which overlaps the upper casing portion in a vertical direction of the vehicle and which is located on a front side of an axis of the second electric motor in a longitudinal direction of the vehicle.

Abstract: An electrified vehicle including a battery for drive, a charger, an electric motor, a transfer device, and a power control circuit is provided. A drive device including the electric motor, the transfer device, and a differential device and the power control circuit are housed in the same case as an integrated electromechanical unit. When mounted on the vehicle, rotational axes of components of the drive device are positioned such that the transfer device, the differential device, and the electric motor are arranged in this order in the forward-rearward travel direction. When mounted on the vehicle, a vertically lower portion of the power control circuit is disposed at a position overlapping a vertically upper portion of the electric motor as seen in the forward-rearward travel direction. A space is created vertically above the integrated electromechanical unit. When mounted on the vehicle, the charger is disposed vertically above the integrated electromechanical unit.

Abstract: At a position of a depth of the first predetermined value from the surface of the gear portion, a surface treatment that satisfies a range of a required hardness defined in advance of the gear portion is performed. A surface treatment is performed at a depth of a second predetermined value from a surface of a bearing portion, the surface treatment satisfying a required hardness in a range prescribed in advance for the bearing portion. Since the second predetermined value is deeper than the first predetermined value, the hardness distribution is made different between the gear portion and the bearing portion. The required hardness in the gear portion and the required hardness in the bearing portion are respectively satisfied.

Abstract: To provide a silicon epitaxial wafer production method and a silicon epitaxial wafer in which the DIC defects can be suppressed, a silicon epitaxial wafer production method is provided, in which an epitaxial layer is grown in a vapor phase on a principal plane of a silicon single crystal wafer. The principal plane is a {110} plane or a plane having an off-angle of less than 1 degree from the {110} plane. The silicon epitaxial wafer production method includes setting a temperature of the silicon single crystal wafer to 1100° C. to 1135° C. and growing the epitaxial layer in the vapor phase at a growth rate of 2.0 ?m/min to 3.0 ?m/min.

Abstract: Provided is a torsional vibration reducing device in which a mass damper configured to reduce ripples of torque by inertia moment of an inertial body and a spring damper configured to reduce ripples of torque to be transmitted between an input-side rotational member and an output-side rotational member by an elastic body being compressed are placed side by side in a predetermined axis direction. The torsional vibration reducing device includes a bolt configured to fix the inertial body and the input-side rotational member to each other in the predetermined axis direction by being inserted from the input-side rotational member side. The input-side rotational member includes a receiving portion recessed toward the mass damper side such that at least part of a head of the bolt in its height direction is received by the receiving portion.

Abstract: A torsional vibration damper having improved abrasion resistance at a portion of a rotary member to which a rolling mass is contacted, and a manufacturing method thereof. The torsional vibration damper comprises: a rotary member; an inertia body oscillating around the rotary member; and a retainer formed on the rotary member to hold a rolling mass between a pair of stoppers. A hardness of an inner surface of at least one of the stoppers is increased higher in a radially outer portion than in a radially inner portion, within a reciprocating range of the rolling mass.

Abstract: A torsional vibration damper having improved vibration damping performance. The torsional vibration damper comprising: a pendulum vibration damper that damps pulsation of engine torque by an oscillating motion of an inertia body in response to the pulsation of the torque; and an engagement device that damps the amplitude of the pulsation of the engine torque by a relative rotation of rotary members. The pendulum vibration damper and the engagement device are arranged in order on a transmission route of the torque of the engine from a side at which the engine is disposed.

Abstract: A pendulum vibration damper in which raceway surfaces are processed accurately at desired positions to damp vibrations effectively by oscillating motions of rolling masses, and a manufacturing method thereof. The pendulum vibration damper comprises a first attachment and a second attachment formed symmetrically. A first raceway surface is formed on the first attachment, and a second raceway surface is formed on the second attachment. The first attachment and the second attachment are attached to each surface of the inertia body a while being positioned to align the first raceway surface and the second raceway surface with a predetermined common profile in the axial direction.

Abstract: A torsional vibration damper that damps torsional vibration effectively in a low-speed range. In the torsional vibration damper, a spring holder is formed by apertures of an input element and an output element, and an elastic member is held in the spring holder. A first moveable range of a planetary element extending from an initial position in a drive direction is wider than a second movable range of the planetary element extending from the initial position in a counter direction.

Abstract: A torsional vibration damper that a torsional vibration damper having a planetary gear unit, and a manufacturing method of the torsional vibration damper for limiting damages on gears of the planetary gear unit due to dimension errors. In the planetary gear unit, at least one of a sun gear, a ring gear, and a set of planetary gears is/are formed by a press forming method. The gear formed by the press forming method is engaged with the remaining gears in such a manner that a thinner portion of each tooth is individually engaged with a thicker portion of the adjacent teeth of the remaining gears.

Abstract: A print information processing system includes a terminal device, and a server. The terminal controller controls an image capturing device to capture an image representing at least part of a cassette and acquiring the captured image. The cassette accommodates print medium therein. A server storage stores information concerning a specific content including at least one of print data and information available for editing the print data. The system performs a detection process detecting the cassette by analyzing the captured image and a determination process determining whether the detected cassette satisfies a specific condition. The server controller performs an information transmission process transmitting the information concerning the specific content to the terminal device in a case where the determination process determines that the detected cassette satisfies the specific condition.

Abstract: A torsional vibration damper having improved vibration damping performance. The torsional vibration damper comprising: a pendulum vibration damper that damps pulsation of engine torque by an oscillating motion of an inertia body in response to the pulsation of the torque; and an engagement device that damps the amplitude of the pulsation of the engine torque by a relative rotation of rotary members. The pendulum vibration damper and the engagement device are arranged in order on a transmission route of the torque of the engine from a side at which the engine is disposed.

Abstract: A torsional vibration damper having improved durability, whose vibration damping performance is ensured irrespective of machining error. The torsional vibration damper comprises: a rotary member rotated by torque; a retainer formed on the rotary member to protrude radially outwardly; a rolling member held in the retainer while being allowed to reciprocate in the retainer; and an inertia body arranged around the rotary member while being allowed to rotate relatively to the rotary member. An elastic member is arranged on any one of inner surfaces of the retainer to push a shaft of the rolling member toward the other one of the inner surfaces of the retainer.

Abstract: A torsional vibration damper having improved abrasion resistance at a portion of a rotary member to which a rolling mass is contacted, and a manufacturing method thereof. The torsional vibration damper comprises: a rotary member; an inertia body oscillating around the rotary member; and a retainer formed on the rotary member to hold a rolling mass between a pair of stoppers. A hardness of an inner surface of at least one of the stoppers is increased higher in a radially outer portion than in a radially inner portion, within a reciprocating range of the rolling mass.

Abstract: A torsional vibration damper that can reduce collision noise of an inertia body when a rotary member is stopped, and a control device therefore. In the torsional vibration damper, a rotary member is mounted on an output shaft of an engine such that none of rolling masses is situated within a predetermined angle range above a rotational center axis of the rotary member when the engine is stopped. Therefore, when the engine is stopped, the inertia body will not be supported by only one of the rolling masses situated within the predetermined angle range.