Patent ID: 9556954
Date: 2017-01-31
CPC Classifications: B60Y,F16H,Y10T

Claim:
1. A method for performing a shuttle shift with a transmission of a work vehicle, the transmission including at least an input shaft, an output shaft, a counter shaft, and a plurality of driven shafts, the method comprising: initiating the shuttle shift by disengaging a clutch associated with a first directional gear of a directional driven shaft of the plurality of driven shafts and the input shaft to eliminate any driving connection between the input shaft and the directional driven shaft, the first directional gear being configured to rotate the directional driven shaft in a first direction; disengaging a clutch associated with a second driven gear of at least one secondary driven shaft of the plurality of driven shafts and the output shaft to eliminate any driving connection between the output shaft and the at least one secondary driven shaft; engaging or maintaining an existing engagement of two or more clutches associated with at least two gears of the at least one secondary driven shaft of the plurality of driven shafts to reduce a rotational speed of at least the directional driven shaft; and after rotational speed of at least the directional driven shaft is at least reduced, disengaging the two or more clutches associated with the at least two gears of the at least one secondary driven shaft of the plurality of driven shafts to permit at least the directional driven shaft to be brought up to speed in a second direction; engaging at least one clutch associated with a second directional gear operably engaged with the input shaft and the directional driven shaft of the plurality of driven shafts to cause rotation of at least the directional driven shaft in the second direction, while the output shaft remains disconnected; and after rotation of at least the directional driven shaft is brought up to speed in the second direction, engaging clutches associated with driven gears operably engaged with the directional driven shaft and the at least one secondary driven shaft of the plurality of driven shafts to establish a driving connection between the directional driven shaft and the at least one secondary driven shaft; and engaging clutches associated with driven gears operably engaged with the at least one secondary driven shaft of the plurality of driven shafts and the output shaft to establish a driving connection between the at least one secondary driven shaft and the output shaft, resulting in full engagement of the transmission to permit travel of the work vehicle in the second direction.