Abstract: A continuously variable transmission comprising a drive plate having a series of radial slots attached to an input shaft. A bevel gear is concentrically mounted on the end of an output shaft held parallel to the input shaft. Lockable pinions are provided which mesh with the bevel gear teeth and slidably engage the drive plate. Locking devices are provided for selectively locking or unlocking the pinions as they rotate about the bevel gear. As the input shaft and driving plate rotate the pinions lock and unlock depending upon their position in relation to the driving plate. When locked, the input shaft drives the output shaft by transmitting power through the driving plate into the locked pinions slidably held in slots in the driving plate and then into the bevel gear and output shaft.

Abstract: An infinitely variable speed transmission is disclosed which transmits externally applied driving torque to an output shaft through a pinion arm which engages a gear mounted on the end of the output shaft. The pinion arm can freely pivot around the bevel gear throughout the full 360 degree rotation of the input and output shafts. A locking mechanism is provided which allows the user to lock the pinion arm to the bevel gear. This enables the applied torque to be transferred through the pinion arm to the output shaft. The distance separating the input and output shafts can be varied by the user. By selectively varying the shafts' separation the effective transmission ratio can be continuously varied.