An infinitely variable speed converter having at least two dynamo/motors, to reduce the thickness in the direction of the central shaft. A space is provided in a portion surrounded by a rotor arranged to rotate clockwise with either a drive disk or a drive gear, a rotor arranged to rotate counterclockwise with either a drive disk or a drive gear, and a radial interior of a stator formed by annularly disposing field magnets. When a traction roller or a traction gear penetrated by a drive shaft is inserted into the provided space, contacting the drive disk to be subject to a couple and thereby rotating while the traction gear comes into contact with the drive gear, whereby an output can be provided to the drive shaft that penetrates the traction roller or the traction gear, so that the entire structure can be compactified.

An infinitely variable speed converter having at least two dynamo/motors, to reduce the thickness in the direction of the central shaft. A space is provided in a portion surrounded by a rotor arranged to rotate clockwise with either a drive disk or a drive gear, a rotor arranged to rotate counterclockwise with either a drive disk or a drive gear, and a radial interior of a stator formed by annularly disposing field magnets. When a traction roller or a traction gear penetrated by a drive shaft is inserted into the provided space, contacting the drive disk to be subject to a couple and thereby rotating while the traction gear comes into contact with the drive gear, whereby an output can be provided to the drive shaft that penetrates the traction roller or the traction gear, so that the entire structure can be compactified.

A variator suitable for an automotive continuously variable transmission utilizes a roller frictionally engaging two rotating plates. The plates are connected to an input such that they rotate at the same speed but in opposite directions. To change the ratio, the roller is moved along an axis perpendicular to the axis of rotation of the two counter-rotating plates. Power from the roller is transmitted to a bevel gear which meshes with an output bevel gear. The output bevel gear rotated about the same axis as the plates.

A variator suitable for an automotive continuously variable transmission utilizes a roller frictionally engaging two rotating plates. The plates are connected to an input such that they rotate at the same speed but in opposite directions. To change the ratio, the roller is moved along an axis perpendicular to the axis of rotation of the two counter-rotating plates. Power from the roller is transmitted to a bevel gear which meshes with an output bevel gear. The output bevel gear rotated about the same axis as the plates.

A friction drive transmission includes a drive pulley having an engaging face, a tip plate that supports the drive pulley and is configured to pivot about a pivot axis that is parallel to an axis of rotation of the engaging face of the drive pulley, and a friction ring that drives an axle. The friction ring may contact the engaging face of the drive pulley and may be moveable relative to the engaging face of the drive pulley to transition between forward rotation and reverse rotation. When the friction ring moves into a reverse rotation position for reverse rotation of the axle, the tip plate may pivot, with the drive pulley, about the pivot axis from a first position into a second position. The first position may be different from the second position.

A friction drive transmission includes a drive pulley having an engaging face, a tip plate that supports the drive pulley and is configured to pivot about a pivot axis that is parallel to an axis of rotation of the engaging face of the drive pulley, and a friction ring that drives an axle. The friction ring may contact the engaging face of the drive pulley and may be moveable relative to the engaging face of the drive pulley to transition between forward rotation and reverse rotation. When the friction ring moves into a reverse rotation position for reverse rotation of the axle, the tip plate may pivot, with the drive pulley, about the pivot axis from a first position into a second position. The first position may be different from the second position.

A friction drive transmission includes a drive pulley having an engaging face, a tip plate that supports the drive pulley and is configured to pivot about a pivot axis that is parallel to an axis of rotation of the engaging face of the drive pulley, and a friction ring that drives an axle. The friction ring may contact the engaging face of the drive pulley and may be moveable relative to the engaging face of the drive pulley to transition between forward rotation and reverse rotation. When the friction ring moves into a reverse rotation position for reverse rotation of the axle, the tip plate may pivot, with the drive pulley, about the pivot axis from a first position into a second position. The first position may be different from the second position.

A friction drive transmission includes a drive pulley having an engaging face, a tip plate that supports the drive pulley and is configured to pivot about a pivot axis that is parallel to an axis of rotation of the engaging face of the drive pulley, and a friction ring that drives an axle. The friction ring may contact the engaging face of the drive pulley and may be moveable relative to the engaging face of the drive pulley to transition between forward rotation and reverse rotation. When the friction ring moves into a reverse rotation position for reverse rotation of the axle, the tip plate may pivot, with the drive pulley, about the pivot axis from a first position into a second position. The first position may be different from the second position.