A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

A method of controlling a continuously variable electric drivetrain (CVED) including a high ratio traction drive transmission and at least one of a first motor-generator and a second motor-generator is disclosed. The method includes the steps of receiving a output speed, determining a kinematic output speed, and determining a slip state of the high ratio traction drive transmission based on a comparison of the output speed to the kinematic output speed.

Provided is a friction transmission device having a friction transmission mechanism that transmits power by contact between a take-out member from which output rotation is taken out and a plurality of friction rolling elements. The take-out member has a contact surface inclined with respect to an axial direction. The device includes an output member that is used to transmit the output rotation to a driven device, and a coupling that connects the take-out member and the output member to each other. The coupling is configured to be more easily deformed than the take-out member and the output member with respect to an axial load, and has a function of absorbing deviation of an axial center between the take-out member and the output member and a function of converting a torque acting on the output member into an axial force to transmit the axial force to a take-out member side.

One aspect of an electric actuator of the present invention includes: a motor having a motor shaft rotatable about a motor axis; a transmission mechanism coupled to one side in the axial direction of the motor shaft; an output shaft extending in the axial direction of the motor shaft and to which rotation of the motor shaft is transmitted via the transmission mechanism; and a rolling member group including three or more rolling members arranged to surround the motor axis. The motor shaft is a hollow shaft. At least a part of the output shaft is located inside the motor shaft. The motor shaft and the output shaft are supported with each other in the axial direction and the radial direction via the rolling member group.

An infinitely variable transmission (IVT) having a rotatable input shaft arranged along a longitudinal axis of the transmission. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In some embodiments, a stator assembly is coupled to, and coaxial with, the input shaft. The IVT has a plurality of planets operably coupled to the stator assembly. The planets are arranged angularly about the longitudinal axis of the transmission. In one embodiment, a traction ring is operably coupled to the planets. The IVT is provided with a housing that is operably coupled to the traction ring. The housing is substantially fixed from rotating with the input shaft. The traction ring is substantially fixed from rotating with the input shaft. In some embodiments, the IVT is provided with a lubricant manifold that is configured to supply a lubricant to the input shaft.

An infinitely variable transmission (IVT) having a rotatable input shaft arranged along a longitudinal axis of the transmission. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In some embodiments, a stator assembly is coupled to, and coaxial with, the input shaft. The IVT has a plurality of planets operably coupled to the stator assembly. The planets are arranged angularly about the longitudinal axis of the transmission. In one embodiment, a traction ring is operably coupled to the planets. The IVT is provided with a housing that is operably coupled to the traction ring. The housing is substantially fixed from rotating with the input shaft. The traction ring is substantially fixed from rotating with the input shaft. In some embodiments, the IVT is provided with a lubricant manifold that is configured to supply a lubricant to the input shaft.

A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

A transmission assembly includes a ring gear configured to receive an input torque from a power source, a carrier assembly coupled to the ring gear, the carrier assembly configured to rotate about a first axis and including a housing, and a spider gear rotatably coupled to the housing, a carrier outlet shaft including a carrier outlet gear in meshed engagement with the spider gear, wherein the carrier outlet shaft is configured to transmit an output torque to a driveshaft, a control shaft including a control gear in meshed engagement with the spider gear, and a load applicator coupled to the control shaft, wherein the load applicator is configured to provide a resistive torque to the control shaft to resist rotation of the control shaft and vary a gear ratio between the driveshaft and the input shaft.