Abstract: The disclosure relates to a final drive unit for a motor vehicle in which a differential has a rotatable planet wheel carrier formed with hollow axial extensions on both sides thereof through which the output drives extend. One of the extensions is supported for rotation of the planet wheel carrier in a first bearing and an input ring gear is secured to the other extension. The input ring gear is supported directly on a bearing mounted on a carrier.

Abstract: A reversing hydromechanical transmission designed for transmitting power from the engine to the power consumer, i.e. the driven mechanism, of road building machines. The transmission comprises a reversing gear with at least two controlled clutches, a gearbox and a hydrodynamic drive, said units being kinematically interconnected. The input shaft of the reversing gear is connected to the engine shaft. At least one output shaft of the reversing gear is connected through the gearbox to at least one shaft of the hydrodynamic drive. The shaft of the turbine incorporated in the hydrodynamic drive is connected to the power consumer. The transmission constituting the present invention provides for smooth reversal of the power consumer, reduced energy expenditure in the traction and reverse modes of operation, efficient operation as a hydraulic retarder, and limiting the output torque in order to prevent slippage of the power consumer and to reduce dynamic loads.

Abstract: A reverse shift mechanism for a power transmission unit comprises a plurality of fork shafts slidably supported from a transmission casing in parallel with each other to be shifted by an operator's shift lever, a shift head fixed to one of the fork shafts, a shift arm rotatably supported by the shift head at its intermediate portion and being pivoted at its lower end on a portion of the transmission casing, and a shift fork slidably mounted on another one of the fork shafts and being rotatably supported by the upper end of the shift arm, the shift fork receiving thereon a reverse idler gear to shift it toward and away from a reverse drive gear and a reverse output gear.

Abstract: To permit placing an electrical-hydraulical controlled automatic transmission, selectively, in reverse or neutral position upon failure of the control or command system, a spool valve is interposed between a fluid pressure pump and the control unit, the spool valve having three positions in which it can be placed manually; one of the positions is its normal operating position in which the valve provides a straight fluid path for pressurized fluid from the pump to the control unit; the other two positions are operable under emergency conditions, a second position providing a connection directly from the valve to the hydraulic servo units associated with control of the reverse gear, and the third interrupting suppply of hydraulic fluid from the pump to the control unit so that the control unit will, effectively, be placed in neutral position.

Abstract: A hydrokinetic torque transmitting mechanism having a torque converter and a compound planetary gear system in which the elements of the gear system are stacked in radial disposition, one with respect to the other, to form a multiple ratio torque delivery path with minimum axial dimensions.

Abstract: A shifting device for a multi-shaft sliding gear arrangement having a plurality of sliding gear blocks displaceable in an axial direction, each one of which is connected, by way of a mechanical transmission device, to a separate electric servo-drive. Each servo-drive comprises an electric servo-motor equipped with a gear reduction unit and a planar cam drive which is arranged between the servo-motor and the transmission device and has a pivotal output lever. The output lever is connected to a sliding gear block at an end remote from the pivotal support therefor. The two end positions of movement of the output lever correspond to the end positions of the sliding gear block.

Abstract: A two speed differential axle is disclosed having a lubricant containing housing which encloses engageable differential and planetary gear assemblies. An input shaft extends into the housing and has a pinion gear rigidly affixed to an inner portion thereof. The pinion gear is adapted to drive the differential and planetary gear assemblies. Two pinion bearing assemblies are positioned within a bore in the housing through which the input shaft extends. The pinion bearings operatively support the rotatable input shaft. A generally flat and annular baffle is rigidly affixed to the inner portion of the input shaft between the pinion bearings and the pinion gear. The baffle, the innermost pinion bearing, and a portion of the housing define a lubricant pump chamber for pressurizing and pumping lubricant.

Abstract: A multiple ratio power transmission mechanism having a hydrokinetic converter and compound planetary gearing wherein provision is made for effecting low speed ratio operation and second speed ratio operation in which the converter is fully active, direct drive or high speed ratio operation that is characterized by a split torque delivery path with a portion of the torque being delivered hydrokinetically and the balance of the torque being delivered mechanically, and an overdrive ratio wherein the mechanism is conditioned for overdrive operation with a fully mechanical torque delivery.

Abstract: A skid-steerable self-propelled vehicle has a simple differential connected to the engine, and a variable speed drive connected direct across differential-speed elements of the differential. The vehicle can be steered using a device for adjusting the drive ratio of the variable speed drive.

Abstract: A four-speed transmission with an overdrive, high-speed ratio comprising multiple ratio torque transmitting gear elements wherein one gear element serves as a reaction element for intermediate speed operation as well as for overdrive operation with the direction of reaction torque distribution to a reaction element during intermediate speed ratio operation being opposite to the direction the reaction torque distributed to that same element during overdrive operation, and double acting brake servos for effecting optimum reaction braking for both intermediate speed operation and overdrive operation, the servos being hydraulically interconnected through a common shift valve circuit for timed engagement and release.

Abstract: A hydrokinetic, multiple-ratio, automatic transmission having a hydrokinetic unit and compound planetary gearing wherein the gearing elements are arranged in radial disposition, one with respect to the other, to produce a minimum axial transmission dimension, a clutch-and-brake arrangement that can be controlled to produce four forward-driving ratios and a single reverse ratio, the third forward-driving ratio being a split torque drive and the fourth forward-driving ratio being an overdrive, the gearing including two sets of planet pinions that are mounted independently on their respective carriers and clutch structure for connecting the carriers for common rotation during low speed operation and reverse drive operation and for relative motion during operation in the other ratios.

Abstract: An automotive transmission with three forward speeds and three reverse speeds is automatically upshifted or downshifted under the control of a speed sensor coacting with an output shaft of that transmission. The engine is automatically decelerated and accelerated during upshifting and downshifting, respectively, for a smooth transition from one speed ratio to the next. A changeover from forward driving to reverse, or vice versa, with the aid of a manual mode selector is possible only at relatively low shaft speeds. Another manual selector is settable to limit the operation of the system to one or two speed ratios in either the forward or the reverse mode.

Abstract: A transmission with epicyclic trains which includes four epicyclic trains permitting six forward speed ratios and one in reverse. With this transmission it is possible to obtain, by elimination of elements such as an annulus, brake bands or clutches, combinations of three, four and five forward speed ratios and one in reverse and is applicable to automobiles, buses and industrial vehicles.

Abstract: A speed ratio control system for a stepless variable speed transmission of vehicles having an electronic fuel injection control system. A speed ratio control signal for controlling the speed ratio of the stepless variable speed transmission is produced from the output fuel injection control signal from the electronic fuel injection control system and a target fuel injection quantity signal from an electronic arithmetic unit which generates the target fuel injection quantity signal in response to a throttle opening indication signal. The output fuel injection control signal is compared with the target fuel injection quantity signal to generate the speed ratio control signal which controls the speed ratio of the stepless variable speed transmission until the fuel injection indicated by the fuel injection from the electronic fuel injection system becomes equal to the target fuel injection quantity.

Abstract: A two speed planetary drive axle assembly comprises a differential carrier fixed over and extending within a drive axle housing. The carrier mounts a differential case connected by a pinion and ring gear to the engine driven propeller shaft. The case contains a differential mechanism connected between two drive axle shafts and constitutes a carrier for planet gears constantly meshed with an internal ring gear rigid with the differential case. The sun gear is in the form of a sleeve concentric with one of the drive axle shafts and selectively movable between two axially spaced operative positions within the axle housing. A fixed abutment is provided to limit axial movement of the sun gear in the direction of the differential mechanism to prevent the sun gear from contacting the differential mechanism. Additional abutment means limit movement of the sun gear in the other direction. The sun gear sleeve is thus positively stopped by the operating mechanism at each of the axially spaced operative positions.

Abstract: This invention relates to a drive train for small devices such as postage meters and the like wherein various speeds and drives to different sets of outputs are required during different phases of operation. The drive train of the invention negates the need for a burdensome number of components through the use of a unique combination of gears and clutches.

Abstract: A transmission combining a plurality of planetary gear arrangements with a torque converter along with various clutching and braking elements provides a broad range of speed reductions with practically identical step ratios between shift ranges thereby efficiently transmitting torque from an input shaft to an output shaft over a broad range of output speeds.

Abstract: A planetary transmission for selectively shifting among six forward speeds and two reverse speeds includes a single planet carrier carrying four planet gear sets and clutchable to a drive shaft. First and second planet gear sets mesh respectively with first and second sun gears secured to the drive shaft and with encircling brake-associated first and second ring gears. A third planet gear set meshes with a centrally apertured third sun gear and with an encircling brake-associated third ring gear. A fourth planet gear set meshes with the third planet gear set and with a fourth sun gear secured to a driven shaft which extends through the central aperture of the third sun gear and which is clutchable to the third sun gear.

Abstract: A gear-change transmission in which the input shaft is connected to one element of a pair of planetary gear sets together forming a differential distributing the output between two shafts. One element of each of the planetary gear sets is connected to a coupling shaft which can be braked for reversal of the transmission output while another two elements of the planetary gears are coupled together and to one of the output shafts. The remaining element of the second set is connected to the remaining input shaft and a clutch can be energized to block the differential and effectively couple all of these shafts together. The output shafts are selectively coupled to a further shaft through positive gearing upon actuation of switching clutches.

Abstract: A hydraulic control system of the type disclosed in U.S. Pat. No. 3,938,410 is improved by providing a 2-3 shift valve which connects a direct passage and a throttle-containing passage to the control valve for the second clutch or brake (second-friction device) while the pressure in the first clutch or brake (first friction device) is applied to one side of the second control valve, a restoring spring acting upon the opposite side of this second control valve. This valve establishes a threshold for the pressure in the first friction device such that the direct passage is connected to the second friction device below the threshold while the throttle-containing passage is connected to the second friction device at or above this threshold.