Patent ID: 8888618

Claim:
A continuously variable transmission with a high shift transmission pulley device, comprising: a continuously variable different-shaft-type transmission (CVT) device ( 100 ) having a CVT driving pulley, a CVT driven pulley, an input shaft ( 101 ), and an output shaft ( 103 ), said CVT driving pulley and CVT driven pulley having a continuously variable speed ratio; and a high shift transmission pulley device ( 102 ) having a fixed speed ratio and including a high shift driving pulley driven by an input shaft ( 101 ) and a high shift driven pulley connected to a clutch device ( 222 ) for selective connection to the output shaft of the continuously variable transmission device through the clutch device ( 222 ); a unidirectional transmission device ( 211 ) or torque limiting clutch ( 212 ) installed between the input shaft and the CVT driving pulley, wherein: when the rotational speed of the output shaft is raised to or over a predetermined rotational speed, the clutch device is closed to connect the high shift driven pulley and the output shaft, and when the rotational speed of the CVT driving pulley or the CVT driven pulley is higher than the rotational speed of the respective input shaft or output shaft in the same rotating direction, the unidirectional transmission device is in a no load operation, or when, as a result of a high torque due to heavy load operation, the rotational speed difference exceeds a predetermined value, the clutch device is slid or released, and wherein the high shift transmission pulley device is thus connected to transmit rotational kinetic energy of the input shaft to the output shaft through the clutch device ( 222 ) whenever the rotational speed of the output shaft is raised to or over a predetermined rotational speed, and released when said rotational speed is lower than the predetermined value.