A clutch alignment apparatus and method of aligning a dual clutch system in a continuously variable transmission that enables a user to measure the alignment of the primary clutch and secondary clutch when the system is under a load that is similar to that which is applied when the system is operating under normal operating conditions.

A variety of transmission mechanisms are provided that include split pulleys nested within each other in order to reduce the size of the transmissions, to provide infinitely variable transmission ratios that include forward and reverse ratios, or to provide some other benefits. The transmissions include multiple inner split pulleys nested within an outer split pulley. Two, three, or more inner split pulleys can be disposed within the transmission to balance the mass of the inner split pulleys in order to reduce vibration and internal stresses experienced by the transmission. This can increase the lifespan of the transmission, reduce wear, and increase efficiency. Additionally, providing multiple inner split pulleys in a nested configuration can allow for reduction of loads transmitted through bearings of the transmission.

A continuously variable transmission driven pulley movable sheave comprising a beveled face disk, an elongated hollow cylindrical collar extending orthogonally from a center of the beveled face disk, and a triangular shaped tuning pocket disposed in the collar. The tuning pocket is structured and operable to control axial movement of the movable sheave on the elongated neck of the driven pulley. The tuning pocket comprises a first gear side, an acceleration side disposed at a positive angle relative to a reference point on the first gear side, and a deceleration side disposed at a negative angle relative to the reference point on the first gear side.

The present disclosure pertains to an adjustable lever for a centrifugal actuator of a continuously variable transmission drive pulley, the adjustable lever including a first extension and a second extension each for receiving a removable weight. The present disclosure also provides kits comprising an adjustable lever as disclosed herein and at least one first removable weight, at least one second removable weight, or both.

A spider is screwed to a drive shaft, includes a first screw that advances in one direction of an axial direction of the drive shaft when the spider rotates relative to the drive shaft in one direction of a circumferential direction, and is fastened to the drive shaft by the first screw. A nut is screwed to the drive shaft, includes a second screw that advances in the other direction of the axial direction of the drive shaft when the nut rotates relative to the drive shaft in one direction of the circumferential direction, and is fastened to the drive shaft by the second screw.

A method of controlling a variator that requires clamping pressure between a first component and a second component to transfer torque therebetween, such as a continuously variable transmission, includes calculating a theoretical clamping pressure, and multiplying the theoretical clamping pressure by a multiplier to define a commanded clamping pressure. The multiplier includes a value that is variable between a minimum multiplier value and a maximum multiplier value. The value of the multiplier is based on current operating conditions of the variator. The commanded clamping pressure is applied to the first component and the second component to generate friction and transfer torque between the first component and the second component.

A variable pitch pulley includes a rotary shaft, a fixed sheave fixed to the rotary shaft, and a moving sheave forming a belt groove with the fixed sheave. The moving sheave includes an inner sheave and an outer sheave radially stacked on the inner sheave. The pitch pulley further includes a moving sheave-positing unit determining relative positions of the inner and outer sheaves. The inner and outer sheaves are simultaneously moved in an axial direction of the rotary shaft in a first moving mode, and only the outer sheave is moved in the axial direction in a second moving mode.

A pulley assembly is provided for mounting on a rotatable shaft of an agricultural harvester and is operable in a high-speed configuration or a low-speed configuration. The pulley assembly comprises a high-speed pulley with a high-speed running surface for receiving a drive belt when the pulley assembly is in the high-speed configuration and a low-speed pulley with a low-speed running surface for receiving a drive belt when the pulley assembly is in the low-speed configuration. The pulley assembly has three sets of teeth extending from surfaces of the two pulleys. In the low-speed configuration, the running surfaces of the low-speed pulley and high-speed pulley are axially aligned and the first set of teeth and the second set of teeth are engaged. In the high-speed configuration, the running surface of the high-speed pulley is exposed for receiving the drive belt.

A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a cam system (20, 22; 32a, 32b) operating between a fixed bushing (11) and a mobile bushing (9). The device is configured to obstruct the approach between the active surfaces (8a, 10a) or to facilitate the approach of the active surfaces.

A continuously variable transmission driven pulley movable sheave comprising a beveled face disk, an elongated hollow cylindrical collar extending orthogonally from a center of the beveled face disk, and a triangular shaped tuning pocket disposed in the collar. The tuning pocket is structured and operable to control axial movement of the movable sheave on the elongated neck of the driven pulley. The tuning pocket comprises a first gear side, an acceleration side disposed at a positive angle relative to a reference point on the first gear side, and a deceleration side disposed at a negative angle relative to the reference point on the first gear side.