Patent ID: 8454475
Filing Date: 2013-06-04
Classification: B64C,Y10T

Abstract:
1. A multi-ratio transmission comprising: an input shaft couplable to a power unit; an output shaft couplable to an output drive system drivable by the power unit; a high speed clutch integrated into a high speed gear train, the high speed gear train having an input coupled to the input shaft and an output coupled to the output shaft; and a low speed clutch integrated into a low speed gear train, the low speed gear train having an input coupled to the input shaft and an output coupled to the output shaft, wherein the high speed clutch and the low speed clutch are freewheeling clutches and are capable of disconnecting the output and the input of the respective gear train of the high and low speed gear trains in an overrunning condition when the output rotates faster than the input of the respective gear train; and wherein the multi-ratio transmission shifts between the high speed gear train and the low speed gear train by engaging or disengaging the high speed clutch and modulating the speed of the power unit to which the input shaft is coupled.