A transmission having speed differential gearing driven by an input powered variable speed ratio range unit to effect driving of two outputs at the same speed for straight vehicle drive and additional speed differential gearing driven by an input-powered variable speed ratio hydrostatic drive unit to effect a speed differential bias on the first-mentioned speed differential gearing to effect a speed differential between the two outputs for vehicle steering.

A vehicle transmission having a hydrodynamic torque converter and two planetary gear sets combined with three clutches, a one-way clutch, three brakes and two one-way brakes to provide four forward drives including an overdrive and also to provide a reverse drive.

A vehicle transmission having a hydrodynamic torque converter and planetary gearing combined with three clutches, three brakes, two one-way brakes and a one-way clutch to provide four forward drives including an overdrive and also to provide a reverse drive.

A vehicle transmission having a hydrodynamic torque converter and planetary gearing combined with four friction brakes, three friction clutches and three one-way devices to provide four forward drives including an overdrive and also to provide a reverse drive.

A transmission includes a shaft, a sleeve receiving the shaft and including a first sleeve portion and a second sleeve portion. A drum is rotatably supported on a bearing by a bearing support which is formed on the first sleeve portion. Seal ring grooves are formed on the second sleeve portion. The first and second sleeve portions have walls which define first and second bore sections, respectively. The inner diameter of the second bore section is larger than the inner diameter of the first bore...

A transmission includes a planetary gear unit, the carrier of which is connected to an outer race of a one-way brake. A member is constructed of a hub part formed with the inner race of the one-way brake, a cylindrical part splined to a transmission casing and means securing the parts with each other. The cylindrical part is made of the same material as that of the casing.

A continuously variable speed transmission with a first adjustable pulley on an input shaft, a second adjustable pulley on an output shaft, and an endless chain or belt trained over the pulleys employs at least one coil spring which biases one flange of one of the pulleys axially of the respective shaft. The coil spring has larger-diameter end convolutions and smaller-diameter intermediate convolutions. A plenum chamber of a torque sensor or of at least one of several piston-cylinder units--whic...

A continuously variable transmission wherein each of two parallel shafts carries a pulley having a fixed flange and a second flange movable axially of the shaft toward and away from the respective fixed flange. An endless torque transmitting chain or belt is trained over the two pulleys. At least one flange of at least one of the pulleys is assembled of two or more parts which consist of sheet metal and are welded and/or otherwise affixed to each other.

A method of controlling a friction-based torque-transmitting system in the drive train of a motor vehicle has the following steps: a) monitoring the respective rates of rotation of an input element and an output element of the torque-transmitting system, b) establishing and analyzing a correlation between said rates of rotation; and c) initiating a change in the operating mode of the torque-transmitting system if the correlation is found to have changed in excess of a given threshold limit.

A transmission 1 includes: a casing 2 and rotatable shafts 50, 60, 70. A drive gear of a reversing gear train 24 and a drive gear of a first speed gear train 25 are fixed on the input shaft 50. The gear change mechanism for 1st speed operation is constituted by he fixed 1st gear 25, a rotatable 1st gear 22, and a synchromesh device 20 supported on the intermediate shaft 60. The gear change mechanism for reversing operation is constituted by the fixed reversing gear 24, a rotatable reversing gear...