Abstract: A nonsynchronous, automatic transmission with overdrive which includes a torque converter coupled to an input member, a planetary gear set comprising a forward sun gear, a reverse sun gear and an output member, clutches for selectively coupling the torque converter to the output member through each of a plurality of torque paths, an overdrive brake coupled to the reverse sun gear, a direct clutch for selecting a torque path connection between the input member and the output member, and a one-way clutch coupled to the direct clutch and the forward sun gear. In the preferred embodiment, the planetray gear set is a compound planetary gear set, although separate planetary sets may be combined as desired. The invention can be employed with a variety of torque path configurations. Preferably, the direct clutch and the one-way clutch are coupled in the same clutch housing and actuated by a single piston.

Abstract: A pump and regulator valve assembly having multiple pump and multiple regulator valve means that establish pressures of two or more operating pressure levels in a control system wherein the valve means has multiple valves that selectively respond to varying flow demands of the different regions of the control system to connect one or more pumps to reduced pressure regions when the flow demands of higher pressure regions are satisfied.

Abstract: A reaction brake band assembly for a multiple ratio power transmission mechanism comprising a brake drum connected to a gear element of the transmission mechanism, and a reaction piston engaged by the anchor end of the brake band for applying a threshold brake band force and for cushioning brake band application.

Abstract: An automatic transmission has two countershafts, two clutches, an output shaft, two synchronizers, two input shafts adapted to be driven from the crankshaft of an engine through either of the two clutches and a one-way clutch that connects the first gear to the output shaft. The overrunning clutch is continuously driven but is easily overrun when higher gear ratios than the first ratio are selected. Changes of gear ratio result upon alternate engagement and disengagement of the friction clutches. Synchronizer clutches engage the next higher or lower speed ratio than the ratio in which the transmission instantaneously operates.

Abstract: First and second concentric input shafts are connected to an engine crankshaft through friction clutches, one for each input shaft. Two countershafts carrying forward speed ratio and reverse drive output gears are driven from pinions carried by each of the input shafts. Synchronizer clutches connect the output gears to the respective countershafts. The first forward speed output gear is mounted on its countershaft by way of an overrunning clutch. One forward speed output gear is continuously engaged with the reverse drive output gear and functions as a reverse idler for changing the direction of rotation of the countershaft when reverse drive is selected.

Abstract: A continuously variable belt driven pulley system drives a torque converter followed by a planetary reversing speed reduction gearset another speed reduction unit and the differential, which distributes power to the drive wheels of the vehicle. The drive system of a motor vehicle according to a second aspect of the invention includes a continuously variable flexible belt-pulley system driving a reversing bevel or planetary gear set and a tandem fluid coupling, which functions as a limited slip differential and distributes power to the drivewheels of the vehicle through two speed reduction gearsets driven from two output shafts of the fluid coupling.

Abstract: A hydrokinetic torque converter transmission for an automotive vehicle driveline comprising multiple ratio gearing having two input torque elements and an output torque element and a compound planetary torque splitter gear unit in the converter including a compound planet carrier connected drivably to the converter turbine and adapted to be connected to one input torque element of the gearing, the ring gear of the torque splitter gear unit being adapted to be connected to a second input torque element of the gearing.

Abstract: A hydrokinetic transmission mechanism for an automotive vehicle driveline including a hydrokinetic torque converter and multiple ratio planetary gearing in combination with a torque splitter gear unit located within the converter housing, the multiple ratio gearing having two separate torque input shafts and the splitter unit being adapted to distribute torque to each of the input shafts, one torque delivery path being fully mechanical and the other being hydrokinetic, the torque splitter unit including a simple planetary gear unit with a pocketed carrier, the planetary gear elements of the torque splitter gear unit being journalled on their peripheries in the carrier thus eliminating the need for a separate torque splitter pinion shafts and bearings.

Abstract: A continuously variable belt driven pulley system drives a torque converter followed by a planetary reversing speed reduction gearset another speed reduction unit and the differential, which distributes power to the drive wheels of the vehicle. The drive system of a motor vehicle according to a second aspect of the invention includes a continuously variable flexible belt-pulley system driving a reversing bevel or planetary gear set and a tandem fluid coupling, which functions as a limited slip differential and distributes power to the drivewheels of the vehicle through two speed reduction gearsets driven from two output shafts of the fluid coupling.

Abstract: An infinitely variable transmission comprising a belt and sheave assembly, the input of which is adapted to be connected to an engine, a hydrokinetic unit, and a torque splitter gear unit located between the torque output portions of the belt and sheave assembly and the input member of the hydrokinetic unit, the output member of the hydrokinetic unit being connected to a driven shaft through final drive gearing whereby only a portion of the torque is transferred hydrokinetically through the hydrokinetic unit thereby increasing the operating efficiency by avoiding hydrokinetic losses and improving smoothness in the ratio changes.