Patent ID: 7470206
Filing Date: 2008-12-30
Classification: F16H,Y10T

Abstract:
1. A transmission comprising: an input member; an output member; a main shaft operatively connected with said input member; a first and a second countershaft, each spaced from and substantially parallel with said main shaft; a plurality of gears for transferring torque between said main shaft, first countershaft and second countershaft and forming different co-planar, intermeshing gear sets; wherein each of said countershafts has different ones of said intermeshing gears concentric therewith and partially forming not more than four of said co-planar, intermeshing gear sets; wherein said co-planar, intermeshing gear sets include: a planetary gear set operatively connected between said input member and said output member; wherein all of said co-planar, intermeshing gear sets are spaced axially between said input member and said planetary gear set; and eight torque-transmitting mechanisms selectively engagable to at least partially establish at least nine forward speed ratios and at least one reverse speed ratio between said input member and said output member.