Provided is a continuously variable transmission that uses friction clutches as power transmission switching mechanisms but without increasing the number of shafts and the overall length. The power transmission switching mechanisms are configured to switch between establishing and interrupting power transmission in the power transmission paths within the continuously variable transmission. A continuously variable transmission includes an input shaft, a first output shaft, a second output shaft, a continuously variable transmission device, and four friction clutches. The continuously variable transmission device includes, a first pulley, mounted to the first output shaft, a second pulley, mounted to the second output shaft, and an endless belt, looped around the first pulley and the second pulley. A first friction clutch and a second friction clutch are coaxial with the input shaft. A third friction clutch is coaxial with the second output shaft. A fourth friction clutch is coaxial with the first output shaft.

A coaxial gear (1), includes an axially oriented tooth system (5) with respect to a rotational axis (3) of the coaxial gear (1), a tooth carrier (7) having axially oriented guideways (9), tooth pins (11) received within the guideways (9) for engaging with the tooth system (5), wherein the tooth pins (11) are axially oriented within the guideways (9) by their respective longitudinal axes and are mounted within the guideways (9) in an axially displaceable manner, and a cam disc (15) rotatable about the rotational axis (3) for axially driving the tooth pins (11), wherein a plurality of bearing segments (17) is disposed between the cam disc (15) and the tooth pins (11) for bearing the tooth pins (11), and wherein, on a side facing the tooth pins, the bearing segments (17) have an elevation at least in sections formed as a spherical cap for bearing the respective tooth pin (11).

A coaxial gear (1), includes an axially oriented tooth system (5) with respect to a rotational axis (3) of the coaxial gear (1), a tooth carrier (7) having axially oriented guideways (9), tooth pins (11) received within the guideways (9) for engaging with the tooth system (5), wherein the tooth pins (11) are axially oriented within the guideways (9) by their respective longitudinal axes and are mounted within the guideways (9) in an axially displaceable manner, and a cam disc (15) rotatable about the rotational axis (3) for axially driving the tooth pins (11), wherein a plurality of bearing segments (17) is disposed between the cam disc (15) and the tooth pins (11) for bearing the tooth pins (11), and wherein, on a side facing the tooth pins, the bearing segments (17) have an elevation at least in sections formed as a spherical cap for bearing the respective tooth pin (11).

A door moving apparatus includes a motor unit, a first gear, a second gear, an endless belt, a drum, and a rotator. The first gear is mounted on a rotary shaft of the motor unit. The second gear includes a diameter larger than a diameter of the first gear and teeth more than the first gear. The endless belt passes over the first gear and the second gear. A rotary power of the second gear is transmitted to the drum via a rotary power transmission mechanism. The rotator is configured to reduce a separation of the endless belt from a preset running path.

A door moving apparatus includes a motor unit, a first gear, a second gear, an endless belt, a drum, and a rotator. The first gear is mounted on a rotary shaft of the motor unit. The second gear includes a diameter larger than a diameter of the first gear and teeth more than the first gear. The endless belt passes over the first gear and the second gear. A rotary power of the second gear is transmitted to the drum via a rotary power transmission mechanism. The rotator is configured to reduce a separation of the endless belt from a preset running path.

Systems and methods for operating a driveline system are disclosed and include a step-variable transmission. A continuously variable transmission (CVT) is coupled between an input source and the step-variable transmission. The CVT receives a first torque from the input source and outputs a second torque. The CVT has a plurality of planetary members in rolling contact with an inner race and an outer race. A radial distance between the planetary members and a drive-transmitting member corresponds to a transmission ratio of the CVT.

An apparatus for amplifying rotating force of a wind power generator includes a blade rotated by wind power, a central rotating shaft rotated by the rotation of the blade, upper and lower horizontal rotating units spread upwards or downwards when the blade rotates, upper and lower fastening plates, a vertical rotating unit continuously rotating the upper horizontal rotating unit and doubling the rotating speed of the upper horizontal rotating unit by repulsive force of a magnetic member, a horizontal rotating shaft rotating the vertical rotating unit as the blade rotates, a shaft conversion unit rotating the horizontal rotating shaft by the rotation of the central rotating shaft, a horizontal-rotating-shaft support supporting the vertical rotating unit and the horizontal rotating shaft, a frame unit stably holding the apparatus and protecting the apparatus from external force, and a bearing.

A continuously variable transmission includes four shift elements to establish three forward driving ranges and one reverse driving range. Two of the forward driving ranges utilize recirculating power flow paths in which the power transmitted through the variator is much smaller than the power transmitted by the transmission. Both variator sheaves rotate about axes that are offset from the input axis such that neither sheave is partially submerged in transmission fluid.

A shift power transmission apparatus of a tractor that has a small up-down width or a small transverse width and a short front-rear length. A shift output unit is located further toward a vehicle rear side than a combined planetary power transmission unit. A planetary unit output axis and a shift unit input axis are coaxial with each other. A power transmission unit, that transmits motive power from an engine to a continuously variable transmission unit and the combined planetary power transmission unit, includes a rotary power transmission shaft, a pump transmission unit and a planetary transmission unit, the rotary power transmission shaft being interlockingly joined to an output shaft of the engine and extending in a direction along a vehicle front-rear direction, the pump transmission unit being configured to input motive power of the rotary power transmission shaft to the continuously variable transmission unit, and the planetary transmission unit being configured to input motive power of the rotary power transmission shaft to the combined planetary power transmission unit.

A control device for an automatic transmission includes: a failure diagnosis section for diagnosing whether or not a failure has occurred in a shift control system of the automatic transmission; a fail-safe control section for fixing the automatic transmission into a predetermined gear position in response to confirmation of the failure of the shift control system of the automatic transmission; and an oil temperature rise regulation torque reduction control section for outputting a torque reduction request to suppress torque of a vehicle driving source, based on temperature of transmission operating oil of the automatic transmission, and outputting the torque reduction request in response to satisfaction of an oil temperature condition that is set lower in oil temperature when the automatic transmission is fixed in a first gear position by the fail-safe control section than when the automatic transmission is not fixed in the first gear position.