Abstract: A traction drive transmission that operates in a geared neutral condition includes coaxial input and output shafts and a traction drive unit connected to the input shaft. A first gearset has a first carrier attached to the input shaft and the drive unit, a first sun gear attached to the drive unit, and a first ring gear. A second gearset has a second sun gear, a second carrier attached to the first ring gear, and a second ring gear attached to the first carrier. A third gearset has a third sun gear attached to the second sun gear, a third carrier and a third ring gear. A first clutch is operative to drivably connect the second carrier and one of the output shaft and the third carrier. A second clutch is operative to brake one of the third carrier and the third ring gear.

Abstract: A traction drive transmission that operates in a geared neutral condition includes coaxial input and output shafts and a traction drive unit connected to the input shaft. A first gearset has a first carrier attached to the input shaft and the drive unit, a first sun gear attached to the drive unit, and a first ring gear. A second gearset has a second sun gear, a second carrier attached to the first ring gear and a second ring gear attached to the first carrier. A third gearset has a third sun gear attached to the second sun gear, a third carrier and a third ring gear. A first clutch is operative to drivably connect the second carrier and one of the output shaft and the third carrier. A second clutch is operative to brake one of the third carrier and the third ring gear.

Abstract: A powertrain has a multi-ratio power transmission having three axially aligned simple planetary gear sets each of which has a sun gear member, a ring gear member and a planet carrier assembly member. The planetary gear sets are connected between an input shaft and an output shaft by a plurality of radially extending hubs at least four of which are connected with axially extending sleeves. The hubs are disposed axially between the planetary gear sets. The sleeves are disposed radially outboard of the planetary gear sets and are operatively connected with a plurality of torque transmitting mechanisms, also disposed radially outboard of said planetary gear sets, that are selectively operatively controlled to establish six forward drive ratios and one reverse drive ratio between the input shaft and the output shaft. The planet carrier assembly member of the first planetary gear set is continuously connected with the ring gear member of the third planetary gear set.

Abstract: A powertrain has a multi-ratio power transmission having three axially aligned simple planetary gear sets each of which has a sun gear member, a ring gear member and a planet carrier assembly member. The planetary gear sets are connected between an input shaft and an output shaft by a plurality of radially extending hubs at least four of which are connected with axially extending sleeves. The hubs are disposed axially between the planetary gear sets. The sleeves are disposed radially outboard of the planetary gear sets and are operatively connected with a plurality of torque transmitting mechanisms, also disposed radially outboard of said planetary gear sets, that are selectively operatively controlled to establish six forward drive ratios and one reverse drive ratio between the input shaft and the output shaft. The planet carrier assembly member of the first planetary gear set is continuously connected with the ring gear member of the third planetary gear set.

Abstract: A powertrain has an engine and a transmission. The transmission provides six forward speed ratios and one reverse speed ratio between the engine and an output shaft of the transmission. The transmission has two compound planetary gear sets each having three rotatable members including a sun gear member, a ring gear member, and a planetary carrier assembly member. The ring gear member of one of the planetary gear sets is continuously connected with the output shaft. Each planetary gear set has at least two members that are connectable to receive power from the engine through selectively engageable rotating torque transmitting mechanism. One member of each planetary gear set are interconnected and operatively connected with a selectively engageable stationary torque transmitting mechanism to provide reaction members during the reverse speed ratio.

Abstract: A multi-speed power transmission has five forward speeds and one reverse speed. The forward speeds consist of three underdrives, a direct drive and one overdrive. These speed ratios are produced with a simple planetary gearset, a compound planetary gearset, three input clutches, a combining clutch, a one-way clutch and two brake assemblies. Each of the brake assemblies incorporates a friction brake and a one-way brake. The combining clutch is disengaged in the low forward and reverse ratios and is engaged to connect the ring gears of the compound set with the carrier of the simple set. The one-way clutch is disposed between the ring gears of both sets to transmit rotation therebetween in an active capacity in the low forward ratio and no load capacity in the reverse ratio. In the second through fifth forward speeds, the one-way clutch permits relative rotation between the ring gears. The ring gear of the simple planetary gearset is continuously connected with the output shaft.

Abstract: In a gas turbine engine, an annular flange of a ceramic scroll is clamped to an annular shoulder of a gas turbine engine housing by a plurality of nuts on thread rods extending perpendicular to the annular shoulder. A metal sleeve around each rod cooperates therewith in defining a coolant passage which is connected at one end to a source of compressed air and which discharges at the other end into a cooling chamber around the nuts through grooves in a surface of each nut. Air circulating in the coolant passages and through the cooling chamber cools and thermally shields the rods and the nuts.