Abstract: A drive transmission device includes a clutch mechanism. The clutch mechanism includes a drive transmission member that is coupled to a first rotation member via a torque limiter and is arranged in a fitting part of a second rotation member and a third rotation member, and a transmission member moving part that includes a first gap and a second gap, the first gap being formed in the fitting part and having a width wider than the thickness of the drive transmission member and the second gap being formed in the fitting part and having a width that is equal to or smaller than the thickness of the drive transmission member, the transmission member moving part being formed in such a way that the width thereof becomes smaller about a rotation axis in the fitting part.

Abstract: A drive device (1, 20) including an electric machine (3), a first planetary gear (4), a differential (5) and an operative connection between a drive shaft (3a) of the electric machine (3) and a first planetary pinion (4a) of the first planetary gear (4), said first planetary pinion (4) engaging with the first planet wheels (4b) which engage with a stationary first ring gear (4) and which are rotationally mounted on a first planet carrier (4c) which is connected in a rotationally fixed manner to a differential cage (5a) of the differential.

Abstract: A power take off device includes input and output shafts and an integral planetary gear set. The power take off device may be a single speed or a two speed device. The input shaft and the output shaft are mechanically connected through the planetary gear set. In one mode of operation of the power take off device, a substantial speed reduction and torque increase is provided between the input shaft and the output shaft. The power take off device may change to a second mode of operation without stopping to provide a direct one to one speed and torque ratio between the input shaft and the output shaft. A planetary gear set clutch unit includes a two direction actuator that provides fluid pressure actuation and release of the clutch unit with a single input signal.

Abstract: In an assembly with a planetary gear train, which includes the elements sun gear, planet carrier with planetary gears and ring gear, two elements, in particular the sun gear and the planet carrier, are coupled with each other via an overrunning clutch. A clutch bridges the overrunning clutch. Bridging is discontinuous and controlled by a control device based on the relative rotation of the two elements to be coupled. For example, one rotation speed sensor can measure the rotation speed of an electric machine, whereas another rotation speed sensor can measure the rotation speed of a crankshaft of an combustion engine. In a motor vehicle, the combustion engine can be coupled with an electric machine, using different gear ratios during startup or boosting and in generator operation. In addition, the electric machine can drive an air-conditioning compressor when the combustion engine is not running.

Abstract: A multi-speed transmission module is provided that can passively and automatically upshift and downshift between two speed ratios, even if the speed of the output member does not decrease. The transmission module includes a planetary gear set. A torque-transmitting mechanism is engageable to connect the two members of the planetary gear set for common rotation. A centripetal member is configured to apply a first axial force urging engagement of the torque-transmitting mechanism. The first axial force increases as the speed of the output member increases. A torque-to-thrust actuator, such as a ball screw actuator, is connected for rotation with the input member and is configured to apply a second axial force opposing engagement of the torque-transmitting mechanism.

Abstract: A transmission has a housing and two input/output shafts. Inside the housing is a planetary gear set with three rotatable members which are connected to the housing and the two input/output shafts. Inside the housing is a clutch which can connect two out of three of the rotatable members. When the clutch is closed the input/output shafts are connected together one to one. The pressure plate of the clutch is connected to a brake disc of a brake system that is connected to one of the rotatable members. When the brake system is closed the input/output shafts are connected via the planetary gear set. The transmission further includes a lever which can move the brake disc in axial direction and can thus open the clutch during operation.

Abstract: A universal two speed gearbox for driving high speed vehicles under high temperature operating conditions, and other devices which require variable operating two speed bearing thrust.

Abstract: A power train assembly is driveably engaged with an input source and includes a transmission module having a casing and a drive member. The transmission module is driveably connected to the input source and a creeper module is driveably engaged with the drive member of the transmission module. The creeper module is detachably mounted to the casing of the transmission module. An output assembly is in driving engagement with the creeper module and a control interface is configured to selectively engage the creeper module to transform the speed of the drive member to a reduced speed of the output member.

Abstract: An electromagnetic selection device of a two-stage planetary gear set (1) having one input shaft (2) and one output shaft (3), one sun gear (8), one ring gear (11), one planet carrier (10) with planetary gears (9), one transmission housing (6) and one sliding sleeve (14) for switching one first gear in which the ring gear (11) can be coupled with the housing (6) and one second gear in which the ring gear (11) can be coupled with the sun gear (8), the sliding sleeve (14) being movable by way of one electromagnet consisting of magnet coils (22, 23) and one armature (24). It is proposed that the armature (24) be situated rotatably, but axially fixed, upon the sliding sleeve (14).

Abstract: A shiftable transmission in which at least two clutches (2, 7) actuated in closing direction by spring force and in opening direction by the exertion of pressure are arranged, wherein output of the transmission is stopped by unpressurized shifting of both actuation devices (9, 13) thereby closing both clutches (2, 7). When pressure is exerted upon the second actuation device (13), the actuation force of the first actuation device (9) is composed of a spring force of the first actuation device (9) and a hydraulic force from the pressurization of the second actuation device (13). The clutch belonging to the first actuation device can thus be impinged upon with different forces depending on whether or not the second actuation device is impinged upon with pressure.

Abstract: A two speed gear box including a casing that is rotatably supported by a central planetary gear carrier. The two speed gear box further includes a central mounted planetary gear assembly with a ring gear controlled by a low speed clutch and a sun gear controlled by a high speed clutch that cooperate to provide three modes of operation for the output shaft with respect to a drive axle. The three modes of operation include a neutral mode, a high speed mode and a low speed mode. Selective engagement and disengagement of the low speed and high speed clutches provide for selection of one of the modes of operation.

Abstract: A forward-reverse rotation device for a continuously variable transmission is provided to reduce the manufacturing cost of a forward-reverse rotation device for a continuously variable transmission. A forward-reverse rotation device 2 for a continuously variable transmission is equipped with a planetary gear set 5, a reverse brake 7, and a forward clutch 6. The planetary gear set 5 has a sun gear 11 provided on an input shaft 8, a ring gear 14, double planetary gears 12, and a carrier 13 that axially supports the double planetary gears 12 and serves to output power to output shaft 9. The brake 7 is for allowing and prohibiting the rotation of the ring gear 14. The clutch 6 is a mechanism for coupling and releasing the input shaft 8 to and from the carrier 13. The sun gear 11 and splines 17 are formed integrally on an external circumferential surface of the input shaft 8.

Abstract: A two speed gear box includes a wheel hub that is rotatably supported by a spindle. The two speed gear box further includes an inboard planetary gear assembly and an outboard planetary gear assembly that cooperate to provide four modes of operation for the wheel hub with respect to a drive axle. The four modes of operation include a neutral mode, a braking mode, a high speed mode and a low speed mode. Selective engagement and disengagement of a clutch in the inboard planetary gear assembly, and selective engagement and disengagement of a clutch in the outboard planetary gear assembly provide for selection of one of the modes of operation.

Abstract: A forward-reverse rotation device for a continuously variable transmission is provided to reduce the manufacturing cost of a forward-reverse rotation device for a continuously variable transmission. A forward-reverse rotation device 2 for a continuously variable transmission is equipped with a planetary gear set 5, a reverse brake 7, and a forward clutch 6. The planetary gear set 5 has a sun gear 11 provided on an input shaft 8, a ring gear 14, double planetary gears 12, and a carrier 13 that axially supports the double planetary gears 12 and serves to output power to output shaft 9. The brake 7 is for allowing and prohibiting the rotation of the ring gear 14. The clutch 6 is a mechanism for coupling and releasing the input shaft 8 to and from the carrier 13. The sun gear 11 and splines 17 are formed integrally on an external circumferential surface of the input shaft 8.

Abstract: The automatic transmission for a motor vehicle having one starting element, one input shaft, one output shaft and gear sets for determining the reduction ratio and having one planetary reversing gear for reversal of direction of rotation of the input shaft. In the planetary reversing gear is situated one ring gear consisting of one ring (1) with inner teeth and with a smooth outer wall and of one disc carrier (2) segmentally welded on the ring.

Abstract: A power transfer system for a motor vehicle is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, a hydraulic clutch actuation system operable to control actuation of the clutch assembly, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling the hydraulic clutch actuation system in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline.

Abstract: A force balanced brake system for effecting ratio changes in transmission comprising a band brake unit (10) having separate bands (12 and 13) selectively engageable with a reaction drum (5), each with a piston apply lug (16 and 18) and anchor lug (17 and 19). With equal area apply pistons (21 and 41 charged with common pressure, apply and reaction forces are equal and opposite. Side loads are eliminated so the brake drum (5) is only piloted as a rotating component. The system provides freewheeler type shifts without specific one-way devices. The brake band unit (10) provides engine braking during vehicle coast. For freewheeler type shifts, the system is staged in a one-way mode and the torque capacity of the band is regulated to vary in direct relationship with the torque band (10) also reduces to a near zero value allowing the brake drum (5) to turn freely in the direction opposite to previous reactive torque.

Abstract: A transmission for an off-highway implement having a plurality of selectively operable gear meshes arranged between input and output shafts of the transmission. A two-speed planetary section is coupled between the output shaft and the transmission output drive shaft. The planetary section of the transmission includes a sun gear that rotates with the output shaft, a planetary carrier that rotates with the transmission output drive shaft and has a series of planetary gears arranged in intermeshing relationship between a rotatable ring gear and the sun gear. A pair of clutch assemblies selectively condition the planetary section of the transmission and thereby influence the turning ratio between the input shaft and the transmission output drive shaft. To rotatably turn the transmission output drive shaft in a third speed ratio condition relative to the turning speed of the output shaft, a selectively operated drive system is associated with the planetary section of the transmission.

Abstract: A power train between the engine and the wheels of a motor vehicle has a start-up component which receives torque from the engine and transmits torque to an infinitely variable transmission through a reversible torque transmitting apparatus. The transmitting apparatus comprises at least one planetary transmission, a first clutch which can be engaged to transmit torque from the start-up component and the planet wheel carrier of the planetary transmission to an input/output element, and a second clutch which can be engaged, when the first clutch is disengaged, to connect the internal wheel of the planetary transmission to a housing for the planetary transmission. The first clutch is mounted, at least in part, on the planet wheel carrier and the second clutch is mounted, at least in part, on the internal wheel of the planetary transmission.

Abstract: A driving mechanism, specially for mobile excavators and similar construction machines, having a power-shiftable two-gear transmission (4) constructed as planetary gear and driven by a hydromotor, includes two speed levels alternatively engageable and disengageable via hydraulically shiftable friction clutches (9, 10). Both friction clutches (9, 10) are designed as spring accumulator clutches controllable by oil pressure. Both friction clutches (9, 10) are radially telescoped and are to be used both for shifting the gears and as parking brake and auxiliary service brake.

Abstract: A planetary gear mechanism including a rotating shaft having a splined end portion, a sun gear splined at a free end of the splined end portion, planetary gears engaging the sun gear, a carrier for rotatably supporting the planetary gears, a ring gear engaging the planetary gears, a clutch for connecting the rotating shaft and the carrier. The clutch has a first rotary member splined on the splined end portion of the rotating shaft such that the first rotary member is adjacent to the sun gear at the free end of the shaft, a first friction member rotatable with the first rotary member, a second rotary member rotatable with the carrier, and a second friction member rotatable with the second rotary member. The first and second friction member frictionally engage each other to transmit power therebetween.