| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 475221000 | Differential or nondifferential planetary combined with differential (e.g., two differentials) | 34 |
| 20080227582 | Two-Stage Two-Speed Front Differential - A variable speed front differential assembly for a vehicle is provided including a first side shaft, a second side shaft, and an input shaft. An offset differential case houses a differential mechanism engaging the first side shaft and the second side shaft. A speed selection assembly is movable from a first speed position to a second speed position. A speed reduction assembly is mounted adjacent the offset differential case. The speed selection assembly directly engages the offset differential case housing when in the first speed position such that a 1:1 drive ratio is achieved. The speed selection assembly engages the offset differential case through the speed reduction assembly when in the second speed position such that an increased drive ratio is achieved. | 09-18-2008 |
| 20080254930 | HYBRID DIFFERENTIAL GEAR DEVICE, DIFFERENTIAL CASE THEREFOR AND ASSEMBLING METHOD OF DIFFERENTIAL CASE - It is an object of the present invention to provide a hybrid differential gear device achieving the small and light devices as a whole and easy assembling of a differential case. | 10-16-2008 |
| 20080287245 | DIFFERENTIAL APPARATUS FOR VEHICLE - An orthogonal axis gear, a planetary gear reduction mechanism portion, and a differential gear mechanism portion are arranged along an axial center direction of left and right output shafts. The planetary gear reduction mechanism portion is constituted such that a sun gear thereof is provided as a continuation of a crown gear of the orthogonal axis gear, a ring gear thereof is fixed to a differential case, and a planetary carrier thereof serves as an output. Further, the differential gear mechanism portion employs a planetary gear mechanism and is constituted such that a ring gear of the planetary gear mechanism is provided as a continuation of the planetary carrier of the planetary gear reduction mechanism portion, a planetary carrier thereof is provided as a continuation of the left side output shaft, and a sun gear thereof is provided as a continuation of the right side output shaft. | 11-20-2008 |
| 20090105029 | TRANSMISSION AND TRANSPORT DEVICE INCLUDING TRAIN USING THE TRANSMISSION - A transmission and a motor or non-motor type transport device including a cross-coupling power train using the transmission, such as chainless bicycle or wagon with two or four wheels are disclosed. The transmission includes a coarse adjustment gearshift of internal gear type and a fine adjustment gearshift of differential gear type which are mounted on a main shaft to change the speed and are selectively connected to each other by a shift lever to provide low-speed rotation and high-speed rotation. | 04-23-2009 |
| 20090111638 | DRIVING FORCE TRANSMISSION DEVICE AND IMAGE RECORDING APPARATUS HAVING THE SAME - A driving force transmission device is provided. The device includes: a first differential unit and a second differential unit. The first differential unit includes: first and second input shafts connected to a first motor and a second motor, respectively, and a first output shaft connected to a first driven member. The second differential unit includes: third and fourth input shafts connected to the first motor and the second motor, respectively, and a second output shaft connected to a second driven member. An angular speed of the first output shaft is a sum of a times a first angular speed of the first motor and b times the second angular speed of a second motor. An angular speed of the second output shaft is a sum of c times the first angular speed and d times the second angular speed. a, b, c and d satisfy a relation of ad−bc≠0. | 04-30-2009 |
| 20090156351 | Hybrid transmission - In a hybrid transmission for a motor vehicle with three differential drive units (D | 06-18-2009 |
| 20090209385 | MULTI-SPEED TRANSAXLE FOR A FRONT WHEEL DRIVE VEHICLE - A front wheel drive transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing. | 08-20-2009 |
| 20100248888 | TANDEM AXLE HAVING TWO DRIVABLE AXLES AND A DRIVETRAIN WHICH CAN BE PARTIALLY DISCONNECTED - A tandem axle having two drivable axles, each axle including a differential gearing with a drive input gearwheel, drivable by a shaft, as a differential gearing input and with two drive input semi-axles driving the wheels of the axle using axle shaft wheels. The wheels of the first axle are permanently positively coupled to the drive input gearwheel of the axle. An activatable distributor wheel is seated on a drive input shaft of the drive input gearwheel of the first axle. The distributor wheel meshes with a through drive shaft wheel which is arranged in a rotationally rigid fashion on a through drive shaft. The output of the through drive shaft is coupled to the input-side drive input gearwheel of the second axle by means of intermediate members. Switchable clutches are arranged in the second axle between the axle shaft wheels and their adjacent wheels. | 09-30-2010 |
| 20110045931 | HYBRID TRANSMISSION - A hybrid transmission is configured to transfer mechanical power to an output member and includes an input member, an output member, and a transmission case circumscribing first and second differential gear sets, each differential gear set including a plurality of meshingly engaged rotatable elements. The first differential gear set is configured with four nodes for transferring mechanical power, and the second differential gear set is configured with three nodes for transferring mechanical power. Two of the four nodes of the first differential gear set are continuously interconnected to two of the three nodes of the second differential gear set. A first torque transfer clutch is configured to selectively connect the input member to an internal combustion engine. First and second brake devices are configured to selectively interconnect elements of the first and second differential gear sets, the transmission case, the input member, and the output member. | 02-24-2011 |
| 20110045932 | DUAL DIFFERENTIAL SEMI-ACTIVE ACTUATOR FIT FOR INTERACTION TASKS AND FAST MOTION - The present invention relates a mechanical differential actuator for interacting with a mechanical load. The mechanical differential actuator comprises first and second semi-active sub-actuators, a velocity source and first and second mechanical differentials having three interaction ports each. The first mechanical differential includes a first interaction port coupled to the velocity source, a second interaction port and a third interaction port coupled to the first semi-active sub-actuator. The second mechanical differential includes a first interaction port coupled to the velocity source, a second interaction port and a third interaction port coupled to the second semi-active sub-actuator. Finally, the second interaction ports of the first and second mechanical differentials are coupled together to form an output which is configured so as to be coupled to the load. | 02-24-2011 |
| 20110053727 | PLANETARY GEAR TRANSMISSION MECHANISM - A planetary gear transmission mechanism includes an input shaft, an input bevel gear connecting to the input shaft, four planetary bevel gears meshed with the input bevel gear, an output gear driven by the planetary bevel gears, a stationary bevel gear meshed with the planetary bevel gears, and four bearing modules. The output gear evenly defines four through holes along one axis. Each planetary bevel gear is received in one through hole and rotatably connected to the output gear. The rotation axis of each planetary bevel gear is substantially perpendicular to the rotation axis of the output gear. The stationary bevel gear meshes with the planetary bevel gears. The input bevel gear and the stationary bevel gear are positioned on opposite sides of the output gear respectively. The bearing modules are received in the through holes respectively, and each bearing module rotatably supports one planetary bevel gear. | 03-03-2011 |
| 20120238394 | DISCONNECTING REAR DRIVE AXLE FOR LONGITUDINALLY ARRANGED POWERTRAINS - A powertrain with a disconnecting rear drive axle generally includes a prime mover including an output that rotates about a rotational axis. A transmission includes an output that rotates about a rotational axis. The rotational axes of the outputs are substantially parallel to a longitudinal axis of the powertrain. A front driveline is operable to direct rotary power from the prime mover to front vehicle wheels. A rear driveline includes a propeller shaft that provides rotary power to a first shaft member and a second shaft member through a pinion and a ring gear. The first shaft member and the second shaft are operable to connect to rear vehicle wheels. A power switching mechanism has an engaged condition and a disengaged condition. The power switching mechanism is operable to direct the rotary power from the transmission to the rear driveline in the engaged condition. A torque transfer device has an engaged condition and a disengaged condition. The power switching mechanism and the torque transfer device in the disengaged condition are operable to only transmit rotary power to the first vehicle wheels. The torque transfer device in the disengaged condition prevents the first shaft member and the second shaft member from back-driving the ring gear and the pinion of the rear driveline. The power switching mechanism in the disengaged condition prevents the transmission from driving the propeller shaft. | 09-20-2012 |
| 20130172145 | Drive Train Transmission - A transmission system including a housing; a rotor supported by the housing and rotably mounted in the housing. The rotor carrying a hub, the rotor being supported in the housing by an outer tapered roller veering toward the rotor hub and an inner tapered roller bearing away from the rotor hub. The rotor having a larger diameter at the outer bearing that at the inner tapered bearing; and a single first stage compound differential planetary including an input sun gear driven by the rotor and a plurality of free planets. The single first stage compound differential planetary including an inner annular gear fixed to the rotor shaft, the compound differential planetary gear meshing the plurality of free planets with the fixed annular gears on one end and with output ring gears on the opposite end with two attached stiff rings. | 07-04-2013 |
| 20130244825 | Tandem Axle With Optimized Inter-Axle Drive - Various drive axle systems are described each having a bevel gear system associated with the front axle system that is designed to minimize the angle of the inter-axle driveline with respect to the rear axle pinion gear. | 09-19-2013 |
| 20130252777 | DOUBLE DIFFERENTIAL DEVICE FOR A VEHICLE - A double differential device for a vehicle which is of compact construction. The device has a longitudinal differential section with a longitudinal differential input, a longitudinal differential output, an axle output. It also has a transverse differential section with a transverse differential input and two driven outputs. The longitudinal differential output is connected with the transverse differential input, the longitudinal differential section and the transverse differential section are each a planetary spur wheel gear and are arranged coaxially with a common main axis of rotation. The longitudinal differential section has a longitudinal differential planet carrier, which carries a longitudinal differential planet set, and the transverse differential section has a transverse differential planet carrier, which carries a first and a second transverse differential planet set. The longitudinal differential planet carrier and the transverse differential planet carrier are arranged rotatable relative to one another, and the two driven outputs are driven suns. | 09-26-2013 |
| 20130274055 | FOUR-WHEEL DRIVE VEHICLE - A four-wheel drive vehicle includes: a driving force transmission system which transmits torque of a drive source to front wheels and rear wheels via gear mechanisms; a clutch provided in the driving force transmission system and capable of controlling an amount of the torque transmitted to the rear wheels; and a pressing mechanism which presses the clutch by transforming a part of the torque transmitted to the rear wheels into axial thrust. In the driving force transmission system, gear ratios of the gear mechanisms are set such that a direction of a differential rotation between a drive shaft connected to an input side of the clutch and a drive shaft connected to an output side of the clutch is not reversed even when a steered angle of the front wheels changes to a maximum value while the four-wheel drive vehicle is traveling forwards. | 10-17-2013 |
| 20130303326 | Disconnectable Driveline For All-Wheel Drive Vehicle - A disconnectable driveline arrangement for an all-wheel drive vehicle includes a power take-off unit having a disconnect mechanism, a rear drive module having a torque transfer device providing a disconnect function, a speed synchronization function and a torque biasing function, and a control system for controlling actuation of the disconnect mechanism and the torque transfer device. The power take-off unit and the rear drive module can each be equipped with a two-speed range shift unit which, under the control of the control system, permits establishment of high and low speed drive connections. | 11-14-2013 |
| 20130310209 | DISCONNECTABLE DRIVELINE FOR ALL-WHEEL DRIVE VEHICLE - A disconnectable driveline arrangement for an all-wheel drive vehicle includes a power take-off unit having a disconnect mechanism, and a drive module having a torque transfer device and a limited slip clutch assembly. | 11-21-2013 |
| 20130337962 | APPARATUS HAVING MULTI-OUTPUT DIFFERENTIAL GEAR - Provided herein is a multi-output differential gear apparatus, the apparatus including a first differential gear having a first output gear and a middle gear, and second differential gear having a second output gear and a third output gear. | 12-19-2013 |
| 20140038763 | True Four Wheel Drive System for Vehicle - A drive train for a four wheel drive vehicle including a front differential engaged with a front drive shaft and front axles through a front differential gear set. The front differential includes a front bi-directional overrunning clutch that controls transmission of torque transfer between the front drive shaft and the front axles. A rear differential is engaged with rear axles and the transmission through a rear differential gear set. The rear differential includes a rear bi-directional overrunning clutch that controls torque transfer between the transmission and the rear axles. The differentials are configured with a gear ratio that is within five percent of a 1:1 gear ratio. | 02-06-2014 |
| 20140057752 | Tandem Axle System - A tandem axle system has a forward axle system and a rear axle system. A method of selectively driving one or both of the axle systems is described. | 02-27-2014 |
| 20140080655 | DISCONNECTABLE DRIVELINE FOR ALL-WHEEL DRIVE VEHICLE - A disconnectable driveline arrangement for an all-wheel drive vehicle includes a power take-off unit having a disconnect mechanism, and a drive module having a torque transfer device and a limited slip clutch assembly. | 03-20-2014 |
| 20140148296 | Converting Motorcycle Final Drive - A vehicle drive system includes a housing, a sun gear, a planet gear carrier, and planetary gears supported by the planet gear carrier and engaged with the sun gear. An output gear includes a ring gear engaged with the plurality of planetary gears, connected to and forming a part of a differential having a rotatable differential case. An interlock is configured to affix the planetary gear carrier to the housing in a first position, and to affix the sun gear to the planet gear carrier in a second position, the axles rotating in a first direction in a first position, and a second direction in a second position. An actuating system moves the planet gear carrier between the first and second positions. A kit includes the transmission and adapts a two wheeled motorcycle to a three wheeled motorcycle. | 05-29-2014 |
| 20140155215 | DRIVE APPARATUS OR SYSTEM - The drive system comprises a drive unit. The drive unit comprises a motor unit and a gear train coupled to the motor unit. The gear train comprises a differential planetary gear system having a single input shaft connected to the motor unit. The differential planetary gear system further has at least two output shafts of which each output shaft is arranged for driving a drive shaft. The differential planetary gear system comprises at least two single planetary gear sets. | 06-05-2014 |
| 20150045170 | DRIVE DEVICE FOR VEHICLE - A drive device for a vehicle includes a first drive shaft, a second drive shaft, a differential mechanism, a speed reduction mechanism, and a case. The second speed reduction pinion gear of the speed reduction mechanism, and the first pinion gear and the second pinion gear of the differential mechanism are arranged out of phase in a rotation direction, and are arranged at a position in an axial direction so that at least any one of the first pinion gear and the second pinion gear of the differential mechanism overlaps with the second speed reduction pinion gear of the speed reduction mechanism. | 02-12-2015 |
| 20150051042 | Infinitely Variable Speed Amplifier - An infinitely variable speed amplifier comprising a continuously variable unit (“variator”), two differential gear trains, and four shafts. Two of the shafts connect to opposite ends of the variator and to two connections of each differential gear train, respectively. The third connections of the first and second differential gear trains are connected to the input and output shafts respectively. Ratios and other parameters are chosen so that an acceptable range of transmission speeds can be achieved without the use of clutches while also minimizing the power crossing the variator. Furthermore, this invention includes a variant that is a compound infinitely variable speed amplifier that provides a wider performance range. | 02-19-2015 |
| 20150072826 | TANDEM AXLE DISCONNECT WITH SYNCHRONIZED OVERDRIVE - A torque transfer assembly for a tandem axle drive train, having a first synchronizer assembly including a first portion arranged to non-rotatably connect to a power input shaft arranged to receive torque from an engine, a second synchronizer assembly, an overdrive gear assembly engageable with the first synchronizer assembly, and an inter-axle differential gear (IAD) arranged to engage first and second power shafts, and engaged with the second synchronizer assembly. In a differential mode, a first torque path is formed from the power input shaft to a first axle through the first synchronizer, the power shafts, the IAD and second synchronizer, and a second torque path is formed from the power input shaft to a second axle through the first synchronizer, the power shafts, and the IAD, and, in overdrive mode, a third torque path is formed from the power input shaft to the first axle through the first synchronizer. | 03-12-2015 |
| 20150119184 | Axles - An axle comprising: a housing including an interior surface defining a first cavity therein; a differential positioned within the first cavity of the housing; a first planetary gear system coupled to the differential and positioned within the first cavity of the housing. | 04-30-2015 |
| 20150375617 | DRIVE AXLE SYSTEM HAVING A CLUTCHING DEVICE - A drive axle system for a vehicle drive train having a clutching device is provided. The drive axle system includes a first shaft, a first axle assembly, a second axle assembly, a first clutching device, a second clutching device, and an axle assembly housing. At least a portion of the first shaft, the second clutching device, and at least one of the first axle assembly and the second axle assembly are disposed in the axle assembly housing. The first axle assembly is drivingly engaged with the first shaft. The first clutching device divides one of a pair of output axles into first and second portions. The second clutching device selectively engages a driving gear of the second axle assembly with one of the first shaft and a portion of the first axle assembly. | 12-31-2015 |
| 20150375618 | DRIVE AXLE SYSTEM HAVING A CLUTCHING DEVICE - A drive axle system for a vehicle drive train having a clutching device is provided. The drive axle system includes a first shaft, a bevel gear inter-axle differential, a first axle assembly, a second axle assembly, a first clutching device, and a second clutching device. The first axle assembly is drivingly engaged with the first shaft. The first clutching device divides one of a pair of output axles into first and second portions. The second clutching device selectively engages a driving gear of the second axle assembly with a portion of the bevel gear inter-axle differential. | 12-31-2015 |
| 20150375619 | DRIVE AXLE SYSTEM HAVING A CLUTCHING DEVICE - A drive axle system for a vehicle drive train having a clutching device is provided. The drive axle system includes a first shaft, a planetary inter-axle differential, a first axle assembly, a second axle assembly, a first clutching device, and a second clutching device. The first axle assembly is drivingly engaged with a portion of the planetary inter-axle differential. The first clutching device divides one of a pair of output axles into first and second portions. The second clutching device selectively engages a driving gear of the second axle assembly with a portion of the planetary inter-axle differential. | 12-31-2015 |
| 20160082836 | ALL-WHEEL DRIVE WITH ACTIVE DRY DISCONNECT SYSTEM - A vehicle drive train for transferring torque to first and second sets of wheels includes a first driveline adapted to transfer torque to the first set of wheels and a first power disconnection device. A second driveline is adapted to transfer torque to the second set of wheels and includes a second power disconnection device. A hypoid gearset is positioned within one of the first driveline and the second driveline in a power path between the first and second power disconnection devices. The hypoid gearset is selectively disconnected from being driven by the first driveline and the second driveline when the first and second power disconnection devices are operated in a disconnected, non-torque transferring, mode. At least one of the first and second disconnection devices includes an active dry friction clutch. | 03-24-2016 |
| 20160121719 | DRIVE DEVICE FOR ALL-WHEEL-DRIVE MOTOR VEHICLES - A drive device for all-wheel-drive motor vehicles, includes a primary axle driven by a drive unit via an axle differential and a secondary axle driven via the left and right output elements of the axle differential and via transmitting means. The transmitting means are formed by at least two switching elements, which are arranged coaxial to the axle differential of the primary axle and which act on the left and right drive shaft of the secondary axle via belt or chain transmissions. | 05-05-2016 |
| 20160138691 | DRIVE DEVICE FOR FOUR-WHEEL-DRIVE MOTOR VEHICLES - A drive device for four-wheel-drive motor vehicles includes a primary axle which is driven by a drive assembly via a center differential and a secondary axle which is driven via the primary axle and via transmission means. Side differentials are arranged on the output elements of the primary axle coaxially to the center differential of the primary axle. The drive elements of the side differentials have a drive connection to the output elements of the center differential, and the output elements of the side differentials have a drive connection to the driveshafts of the primary axle and to the driveshafts of the secondary axle via multiple belt drives. | 05-19-2016 |
