Patent ID: 8113978

Claim:
A multiple speed automatic transmission comprising, in combination, an input member, an output member, a first, a second, a third and a fourth planetary gear assembly each having a first, a second and a third member, a first and a second chain drive assembly each having a pair of sprockets and a sprocket engaging chain, a first connecting member for continuously connecting said first planetary gear assembly with one of said pair of sprockets of said second chain drive assembly, a second connecting member connected to said first planetary gear assembly, a third connecting member for continuously connecting said first planetary gear assembly with one of said pair of sprockets of said first chain drive assembly, a fourth connecting member connected to said second planetary gear assembly, a fifth connecting member for continuously connecting said second planetary gear assembly with said third planetary gear assembly, a sixth connecting member for continuously connecting another of said pair of sprockets of said second chain drive assembly with said second planetary gear assembly, a seventh connecting member for continuously connecting another of said pair of sprockets of said first chain drive assembly with said fourth planetary gear assembly, an eighth connecting member for continuously connecting said said second planetary gear assembly with said third planetary gear assembly, said output member continuously connected to said third planetary gear assembly and said fourth planetary gear assembly, and a plurality of torque transmitting devices selectively connecting: each of said first, second and third members of said first planetary gear assembly to said input member and said third of said members of said first planetary gear assembly to ground, said fifth connecting member to ground, said fourth connecting member to said sixth connecting member, said fourth connecting member to ground, said seventh connecting member to said fourth planetary gear assembly and said fourth planetary gear assembly to ground.