A transfer for a four-wheel drive vehicle, the four-wheel drive vehicle configured to disconnect a propeller shaft from a power transmission path between an auxiliary drive wheels and a driving power source when the four-wheel drive vehicle travels by two-wheel drive, includes a second output rotating member and an oil pump. The second output rotating member is configured to output a driving power to the propeller shaft. The oil pump is configured to rotationally drive in conjunction with rotation of the second output rotating member via a first one-way clutch. The first one-way clutch is configured such that the oil pump supplies a lubrication oil to a wet clutch when the four-wheel drive vehicle travels forward by the four-wheel drive. The oil pump is configured to stop supplying the lubrication oil to the wet clutch when the four-wheel drive vehicle travels forward by the two-wheel drive.

A clutch mechanism is used in a rotary power tool having a motor. The clutch mechanism includes an input member to which torque from the motor is transferred and an output member co-rotatable with the input member. The output member defines a rotational axis. A cam surface is formed on one of the input member or the output member. First and second compression springs are carried by the other of the input member or the output member for co-rotation therewith. A follower has a circular cross-sectional shape and is biased against the cam surface by the first and second compression springs. In response to relative rotation between the input member and the output member, the cam surface displaces the follower along a line of action coaxial or parallel with each of the first and second compression springs. The line of action does not intersect the rotational axis.

A one-way clutch regenerative braking system includes a sleeve which is arranged on an outer circumference of a hub and moved in an axial direction, a clutch gear which is arranged on a side of the hub and meshed with the sleeve, and a one-way clutch which is arranged on an inner circumference of the hub and rotated in a first direction, wherein, when the sleeve and the clutch gear are meshed with each other, the clutch gear is rotated in a second direction which is opposite to a rotational direction of the one-way clutch.

An electric tricycle including a frame having a front end coupled to a steering assembly, the steering assembly having a front wheel, and a rear end coupled to a rear wheel assembly, the rear wheel assembly having two rear wheels. At least two pedals rotatably coupled to the rear wheel assembly and configured to move in a reciprocating motion, the at least two pedals having an engaged configuration wherein the at least two pedals are engaged with the two rear wheels and configured to rotate the two rear wheels in a first direction, and a disengaged configuration wherein each of the at least two pedals is disengaged from the two rear wheels and aligned with another of the at least two pedals. An electric motor electrically coupled to a battery and configured to engage with the two rear wheels and to rotate the two rear wheels in the first direction.

A coupling assembly includes a multiple-position actuation mechanism and a detent assembly holding the actuation mechanism in a discrete position. The detent assembly may include a mechanical detent. In one example, the mechanical detent engages the actuation mechanism and holds the actuation member in a neutral or middle position.

A parking brake assembly which includes a brake lever, a rotary clutch and a lock-release mechanism which cooperate to selectively lock and release a parking brake. The clutch allows actuation of the brake lever in one direction and prevents movement of the brake lever in an opposite direction. The lock-release mechanism allows selective movement of the rotary clutch and the brake lever together in the opposite direction. A gear mechanism is operatively coupled between the brake lever and the rotary clutch.

A parking brake assembly which includes a brake lever, a rotary clutch and a lock-release mechanism which cooperate to selectively lock and release a parking brake. The clutch allows actuation of the brake lever in one direction and prevents movement of the brake lever in an opposite direction. The lock-release mechanism allows selective movement of the rotary clutch and the brake lever together in the opposite direction. A gear mechanism is operatively coupled between the brake lever and the rotary clutch.

A one-way clutch, disposed between an input rotating body and an output rotating body, is used to connect the input and output rotating bodies so that the rotating bodies are rotatable integrally in a state in which the rotation speed of the input rotating body is higher than that of the output rotating body and to cut off the connection between the input and output rotating bodies in a state in which the rotation speed of the input rotating body is lower than that of the output rotating body. A plurality of engaging elements or an inner ring and an outer ring constituting the one-way clutch are made of a base material obtained by subjecting a martensitic stainless steel material to soft nitriding treatment, and the Vickers hardness of the portion up to 20 μm from the surface of the contact portion thereof is 1000 to 1500 Hv.

A one-way clutch, disposed between an input rotating body and an output rotating body, is used to connect the input and output rotating bodies so that the rotating bodies are rotatable integrally in a state in which the rotation speed of the input rotating body is higher than that of the output rotating body and to cut off the connection between the input and output rotating bodies in a state in which the rotation speed of the input rotating body is lower than that of the output rotating body. A plurality of engaging elements or an inner ring and an outer ring constituting the one-way clutch are made of a base material obtained by subjecting a martensitic stainless steel material to soft nitriding treatment, and the Vickers hardness of the portion up to 20 μm from the surface of the contact portion thereof is 1000 to 1500 Hv.

Disclosed is a hydrokinetic torque converter (TC) with a TC housing. An impeller is disposed within the TC housing and connects to an engine output shaft. A turbine is disposed within the TC housing and connects to a transmission input shaft via a TC output shaft. A torque converter clutch (TCC), which is disposed within the TC housing and coupled to the TC output shaft, selectively locks the impeller to the TC output shaft. A damper, which is disposed within the TC housing and coupled to the TCC, dampens vibrations transmitted by the TCC. A disconnect device, which is disposed within the TC housing and coupled to the damper assembly and TC output shaft, connects the turbine to the TC output shaft or damper when positive torque is being transferred, and disconnects the turbine and TC output shaft or damper when negative torque is being transferred.