Patent ID: 7311630
Filing Date: 2007-12-25
Classification: F16H,Y10T

Abstract:
1. A transmission comprising: an input member; an output member; a differential gear set having first, second and third members; a first, a second and a third torque-transmitting mechanism each selectively engageable to connect said input member with a respective different one of said members of said differential gear set; a countershaft gearing arrangement operatively connected with said differential gear set and including sets of co-planar intermeshing gears, a plurality of shafts, and a plurality of synchronizers selectively engagable to connect selected ones of said gears with selected ones of said shafts for common rotation to thereby transfer torque from said differential gear set to said output member along said plurality of shafts and said sets of co-planar intermeshing gears; and wherein first, second and third different torque ratios of said output member to said input member are established when said first torque-transmitting mechanism and a first of said synchronizers, said second torque-transmitting mechanism and a second of said synchronizers, and said third torque-transmitting mechanism and both said first and second synchronizers are engaged, respectively.