A clutch to be combined with a rotary machine rotating about an axis is comprised of a rotary member including a first face perpendicular to the axis, a first bottom receding in an axial direction from the first face, and plural first clutch teeth being arranged in a circumferential direction and respectively projecting from both the first face and the first bottom; and a clutch member movable in the axial direction relative to the rotary member, the clutch member including a second bottom, plural second clutch teeth being arranged in a circumferential direction and respectively projecting from the second bottom to be respectively engageable with the plural first clutch teeth, and an internal peripheral wall connecting internal ends of the plural second clutch teeth and projecting in the axial direction toward the rotary member.

A clutch assembly comprises a first drive part, a second drive part, a clutch which comprises an axially supported first clutch part and an axially movable second clutch part, wherein the second clutch part can be moved into an open position and into a closed position, wherein a clutch profile of the second clutch part 8 and a drive part profile of the second drive part form a form-locking profile connection such that the second clutch part is connected to the second drive part in a rotationally fixed and axially movable way, wherein the drive part profile comprises central flank lines which are each formed between a tip line and a base line of the drive part profile, wherein the drive part profile is designed such that the central flank lines, when rotating around the rotational axis A, define a rotational face which comprises at least one tapered partial portion. Further disclosed is a driveline assembly with such a clutch assembly.

A drive transmission apparatus includes an engage member that is rotatable in a radially displaced state with respect to a shaft member and an engaged member that is rotatable centering on an axis parallel with the shaft member. The engage member and the engaged member are engaged with and disengaged from each other by relatively moving along an axial direction. The drive transmission apparatus further includes a moving portion which can move the engage member in a direction in which a rotational axis of the engage member approaches an axis of the shaft member in a disengaged condition in which the engage member is disengaged from the engaged member. The moving portion thus regulates offset amount of the engage member in the disengaged condition, so that the engage member and the engaged member reliably engage with each other.

A shift control apparatus of an automatic transmission includes: an input detecting unit configured to detect a real rotational speed of the input shaft; an output detecting unit configured to detect a real rotational speed of the output shaft; an estimating unit configured to estimate an estimated rotational speed of the input shaft, which corresponds to a shift request, by multiplying the real rotational speed of the output shaft by a target gear ratio; and a control unit configured to control the rotation of the input shaft based on a detection result from the input detecting unit. The control unit controls the rotation of the input shaft such that an upper-limiting rotational speed of a variation in real rotational speed of the input shaft is lower than the estimated rotational speed.

A roller drive transmission device includes a drive input gear, a drive transmission gear, a roller unit and a ratchet mechanism. When a rotational drive force is input to the drive input gear and the drive transmission gear is slid to a first position, the drive input gear, the drive transmission gear and the roller unit are integrally rotated in a first rotational direction. When the input of the rotational drive force to the drive input gear is cut off and the roller unit is rotated, following a sheet, the drive transmission gear is slid to a second position and the roller unit and the drive transmission gear are decoupled. The ratchet mechanism includes a load adjustment mechanism configured to make a rotational load in the first rotational direction of the drive transmission gear arranged at the second position larger than a movement load in an axial direction.

A transfer case includes a primary output shaft, and a secondary output selectively coupleable to the primary output shaft with a secondary torque transfer mechanism. The secondary torque transfer mechanism comprises a plate clutch and a locking sleeve. The plate clutch includes a housing coupled to the secondary output shaft, a plurality of interleaved plates alternatingly coupled to the primary output shaft and the housing, and an apply plate coupled to the primary output shaft and being configured to compress the interleaved plates to selectively form a friction coupling between the primary output shaft and the secondary output shaft. The locking sleeve is non-selectively coupled to one of the housing or the apply plate to rotate therewith, and is selectively coupleable to the other of the housing or the apply plate to form a positive coupling between the primary output shaft and the secondary output shaft.

A disconnect shaft of an integrated drive generator is provided including a body configured to rotate about an axis of rotation. The body has a first end, a second opposite end, and a plurality of teeth formed adjacent the first end and configured to engage a complementary portion of an adjacent component. A relief is formed in the body such that a first portion is defined between the relief and the plurality of teeth. The first portion includes a plurality of threads having at least one of a major diameter between about 1.3044 and about 1.3125 inches (3.313-3.334 centimeters), a minor diameter between about 1.2482 and about 1.2547 inches (3.170-3.187 centimeters), a pitch diameter between about 1.2765 and about 1.2800 inches (3.242-3.251 centimeters), and a root radius between about 0.0075 and 0.0090 inches (0.0190-0.0029 centimeters).

A modular clutch assembly with two independent power sources and a connection with an output device. The two independent power sources and the output device can take many different forms. The modular clutch assembly has a housing that connects the two power sources with the output device and controls power transfer using an inner clutch and an upper clutch. There is further provided an output hub connected to the output device, where the output hub extends into the modular clutch assembly for selective rotation. The output device in one exemplary embodiment of the invention is a transmission of a vehicle.

A control device for a vehicle is provided. The control device includes an electronic control unit that is configured to: exert the torque of an input member on a fixed member and a rotating member such that the fixed member and the rotating member are separated from each other, when the thrust is exerted for making the engagement teeth mesh with each other; estimate an inclination angle of tooth surfaces based on a relative movement amount between the fixed member and the rotating member, and a relative rotational amount between the fixed member and the rotating member; estimate a frictional coefficient of the tooth surfaces based on the inclination angle; and control the thrust of the actuator according to the frictional coefficient.

In a walk behind mower (10) including a clutch (23) provided in a power transmission path between an electric motor (35) and driven wheels (13), a clutch actuating mechanism (24) interposed between the electric motor and the clutch for selectively engaging the clutch, and a control unit (140) for selectively supplying electric power from a power source to the electric motor according to a command from an operation switch (30), the clutch actuating mechanism includes a cam mechanism for engaging the clutch by using a force transmitted to an input end (23a) of the clutch in the power transmission path when the electric motor is being driven in a normal rotational direction, and the control unit is configured to drive the electric motor in a reverse rotational direction for a prescribed period of time before stopping supplying electric power to the electric motor when a command to stop supplying electric power to the electric motor is received from the operation switch.