Multi-speed power transmission

A power transmission comprising:

• an input member;
• an output member;
• a first planetary gear set having a first sun gear, a first ring gear and a first planet carrier assembly including a plurality of rotatably mounted pinion gears each meshing with both the first sun gear and the first ring gear;
• a second planetary gear set having a second sun gear, a second ring gear and a second carrier assembly including a plurality of rotatably mounted pinion gears each meshing with both the second sun gear and the second ring gear;
• said first sun gear being continuously connected with said input member, said first carrier assembly and said second ring gear being connected for common rotation;
• a first brake means selectively connectible between the second carrier assembly and a stationary member for selectively preventing rotation of the second carrier;
• a first clutch means selectively connectible between the second carrier assembly and the first ring gear for effecting common rotation therebetween;
• a second brake means including a positive grounding brake for selectively connecting said second sun gear with said stationary member;
• a second clutch means for selectively connecting said second carrier assembly with said input member;
• third clutch means for selectively connecting said first carrier assembly and said output member;
• and
• fourth clutch means for selectively connecting said first ring gear to said output member,
• said clutch means and said brake means being selectively engaged to establish five forward ratios and one reverse ratio between said input member and said output member, said first brake means, the positive grounding brake and the fourth clutch means being engaged to establish the reverse ratio.