Family of six-speed planetary transmissions having three planetary gearsets and five torque-transmitting mechanisms

A family of multi-speed planetary transmissions having a plurality of family members comprising:

• an input shaft;
• an output shaft;
• a transmission housing;
• a first planetary gear set having a first member, a second member, and a third member;
• a second planetary gear set having a first member, a second member, and a third member;
• a third planetary gear set having a first member, a second member, and a third member;
• a first interconnecting member continuously interconnecting said first member of said first planetary gearset with said first member of said second planetary gearset;
• a second interconnecting member continuously interconnecting said second member of said first planetary gearset with said second member of said second planetary gearset;
• a third interconnecting member continuously interconnecting said first member of said third planetary gearset with either said first or third member of said second planetary gearset;
• at least one member of said planetary gearsets being continuously interconnected with said output shaft;
• three selectively engageable clutch means for individually selectively interconnecting at least one member of one of said planetary gearsets with either said input shaft, said output shaft, or another member of one of said planetary gearsets;
• two selectively engageable brake means for individually selectively interconnecting said transmission housing with either a member of one of said planetary gearsets or one of said interconnecting members;
• and
• said three clutch means and said two brake means being selectively engaged in combinations of three to establish at least six forward speed ratios and one reverse speed ratio between said input shaft and said output shaft.

A family of multi-speed planetary transmissions having a plurality of family members comprising:

• an input shaft;
• an output shaft;
• a transmission housing;
• a first planetary gear set having a first member, a second member, and a third member;
• a second planetary gear set having a first member, a second member, and a third member;
• a third planetary gear set having a first member, a second member, and a third member;
• a first interconnecting member continuously interconnecting said first member of said first planetary gearset with said first member of said second planetary gearset;
• a second interconnecting member continuously interconnecting said second member of said first planetary gearset with said second member of said second planetary gearset;
• a third interconnecting member continuously interconnecting said first member of said third planetary gearset with a member of a group consisting of said first member of said second planetary gearset and said third member of said second planetary gearset;
• said output shaft being continuously interconnected with said second member of said third planetary gearset;
• a first clutch means for selectively interconnecting said input shaft with one of said first and second interconnecting members;
• a second clutch means for selectively interconnecting said input shaft with said third member of said third planetary gearset;
• a third clutch means for selectively interconnecting said third member of said third planetary gearset with a member of a group consisting of said first interconnecting member, said second interconnecting member and said third member of said second planetary gearset;
• a first brake means for selectively interconnecting said transmission housing with a member of a group consisting of said first interconnecting member, said second interconnecting member, and said third member of said first planetary gearset;
• a second brake means for selectively interconnecting said transmission housing with a member of a group consisting of said third member of said first planetary gearset and said third member of said second planetary gearset;
• and
• said three clutch means and said two brake means being selectively engaged in combinations of three to establish at least six forward speed ratios and one reverse ratio between said input shaft and said output shaft.

A family of multi-speed planetary transmissions having a plurality of family members comprising:

• an input shaft;
• an output shaft;
• a transmission housing;
• a planetary gear arrangement including three planetary gearsets, three interconnecting members, and five torque transmitting mechanisms, each of said planetary gearsets having first, second, and third members respectively;
• said first member of said first planetary gearset being continuously connected with said first member of said second planetary gearset through said first interconnecting member, said second member of said first planetary gearset being continuously interconnected with said second member of said second planetary gearset through said second interconnecting member, and said first member of said third planetary gearset being continuously interconnected with a member of a group consisting of said first interconnecting member and said third member of said second planetary gearset;
• said output shaft being continuously interconnected with at least one member of said planetary gearsets;
• said input shaft being non-continuously interconnected with any member of said planetary gearsets;
• five selectively engageable torque transmitting mechanisms connect members of said planetary gearsets with said input shaft, said transmission housing, or other members of said planetary gearsets;
• and
• said torque transmitting mechanisms being selectively engaged in combinations of three to establish at least six forward speed ratios and a reverse speed ratio between said input shaft and said output shaft.