Class / Patent application number | Description | Number of patent applications / Date published |
475214000 | Nonplanetary transmission is friction gearing | 36 |
20080242468 | Power-Split Transmission - A power-split transmission with a variator ( | 10-02-2008 |
20090017960 | Power-branched, continuously variable vehicle transmission - A power-branched, continuously variable vehicle transmission includes a CVT variable speed drive that is connected to an input shaft through a planetary gear train and to an output shaft through a multistage gearbox. In an alternative embodiment, one variable speed drive shaft of the variable speed drive is connected to an input shaft, and the variable speed drive shafts are connected to an output shaft through a planetary gear train module. The power-branched transmission is compactly constructed, but permits a high start-up torque and enables a wide transmission ratio spread. | 01-15-2009 |
20090137356 | Continuously variable transmission with external cam - A continuously variable transmission includes: (a) at least one external, three-dimensional cam; (b) at least four follower assemblies, each including a planet pulley, a roller shaft, and at least one follower roller, the roller shaft being mounted on the planet pulley, the roller shaft being connected to the follower roller; (c) at least two sun assemblies, each including a sun pulley, at least one sprag clutch, and a differential pulley, the differential pulley being mounted to the sun pulley, the sun pulley driving the sprag clutch; (d) an input assembly including a sun pulley shaft, the sun pulley shaft being connected to the at least two sun pulley assemblies through the respective sprag clutches; and (e) at least one differential mechanism connecting each of the sun pulleys to at least two of the planet pulleys; wherein the cam is external to the follower assemblies. | 05-28-2009 |
20090203486 | RATIO LIMITING ARRANGEMENT - An arrangement is disclosed for providing an “end-stop” function for a variator in a continuously variable transmission. The variator ( | 08-13-2009 |
20090312137 | Transmission - In a transmission having two revolving transmission elements, each of which has at least one running surface for a revolving coupling element, at least one running surface having at least two running paths for the coupling element having different running radii and the two transmission elements being braced, while incorporating the coupling element, via a bracing device which presses the two transmission elements against the coupling element with a variable pressure, the bracing device comprises a pressure device connected in series with a spring element. | 12-17-2009 |
20100093480 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable accessory drives (CVAD). In one embodiment, a skew-based control system is adapted to facilitate a change in the ratio of a CVAD. In another embodiment, a skew-based control system includes a skew actuator coupled to a carrier member. In some embodiments, the skew actuator is configured to rotate a carrier member of a CVT. Various inventive traction planet assemblies can be used to facilitate shifting the ratio of a CVT. In some embodiments, the traction planet assemblies include legs configured to cooperate with the carrier members. In some embodiments, a traction planet assembly is operably coupled to the carrier members. Embodiments of a shift cam and a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are disclosed. | 04-15-2010 |
20100203998 | VARIABLE TRANSMISSION DEVICE FOR A VEHICLE - A continuously variable transmission device ( | 08-12-2010 |
20100248887 | Twin Variator Transmission Arrangement - A transmission arrangement is disclosed which comprises first and second variators ( | 09-30-2010 |
20100285916 | TRANSMISSION ASSEMBLY FOR VARIABLE TORQUE DISTRIBUTION - A transmission module for the variable distribution of torque in the driveline of a motor vehicle. A driveshaft | 11-11-2010 |
20110165986 | Transmission Producing Continuously Speed Ratios - A transmission includes an input, a variator including an output and a race connected to the input for producing a variable speed ratio between the output and the race, a gearset including a component connected to the output, and second and third components, a first clutch opening and closing a connection between the input and the second component, and a second clutch opening and closing a connection between the output and the third component. | 07-07-2011 |
20110165987 | Accessory Drive and Engine Restarting System - A drive system includes a pulley, an engine, a variator for varying a ratio of an output speed and an input speed, a gearset including a first and second components driveably connected to the engine and pulley, respectively, and a third component connected to the output, and a second gearset for increasing an input speed relative to an pulley speed. | 07-07-2011 |
20110165988 | Transmission Producing Stepless Variable Speed Ratios - A transmission includes a variator including a cone secured to an input, and a second cone driveably connected to the cone, producing a variable speed ratio between the cones, a gearset including a member secured to the second cone, and second and third members, a first clutch opening and closing a connection between the input and the second member, and a second clutch opening and closing a connection between an output and the third member. | 07-07-2011 |
20120115667 | CONTINUOUSLY VARIABLE TRANSMISSION - Disclosed embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a CVT has a number of spherical planets in contact with an idler. Various idler assemblies can be used to facilitate to improve durability, fatigue life, and efficiency of a CVT. In one embodiment, the idler assembly has two rolling elements having contact surfaces that are angled with respect to a longitudinal axis of the CVT. In some embodiments, a bearing is operably coupled between the first and second rolling elements. The bearing is configured to balance axial force between the first and second rolling elements. In one embodiment, the bearing is a ball bearing. In another embodiment, the bearing is an angular contact bearing. In yet other embodiments, needle roller bearings are employed. | 05-10-2012 |
20120142483 | CONTINUOUSLY VARIABLE TRANSMISSION - A variator ( | 06-07-2012 |
20120196717 | FRICTION GEAR - A friction gear for the continuously variable speed control of an output shaft driven by an input shaft, and which includes a gear or differential gear between first and second friction wheels, and a friction disk whose rotation axis extends perpendicularly to the rotation axes of the friction wheels and is displaceable in parallel to the rotation axis of the friction wheels. The friction disk includes a recess or depression concentrically positioned in relation to the rotational axis thereof. | 08-02-2012 |
20130130859 | TWO-MODE CONTINUOUSLY VARIABLE TRANSMISSION - A continuously variable transmission includes a gearbox with two forward modes and a reverse mode. The gearbox includes a plurality of gear members and further includes at least three torque transmitting devices such as, clutches and brakes that are selectively employed to engage various combinations of the gear members such that a particular combination is associated with one of the two forward modes and the reverse mode. | 05-23-2013 |
20130210569 | COMPOUND PLANETARY FRONT WHEEL DRIVE CONTINUOUSLY VARIABLE TRANSMISSION - The present invention provides an automatic transmission for a motor vehicle having a compact single mode transfer gear continuously variable transmission (CVT) with a compound planetary gear carrier for use in front wheel drive vehicles. The automatic transmission includes an input shaft, a variator or other, similar device which provides a continuously variable input to output speed ratio over a limited range, a compound planetary gear assembly having a sun gear, a planet gear carrier with compound gear sets and a ring gear, a friction brake, a friction clutch and a plurality of transfer gears and layshafts. | 08-15-2013 |
20130303325 | TOROIDAL TRACTION DRIVE TRANSMISSION - A continuously variable transmission includes a gearbox with a forward mode and a reverse mode. The gearbox includes a plurality of gear members and further includes at least two torque transmitting devices such as, a clutch and a brake that are selectively employed to engage various combinations of the gear members such that a particular combination is associated with one of the forward mode and the reverse mode. | 11-14-2013 |
20140011624 | TRANSMISSION WITH DISENGAGEABLE VARIATOR - A transmission, preferably for driving a motor vehicle, includes a multi-gear main transmission and a range group, that is connected downstream from the main transmission and comprises an input shaft and an epicyclic gear system. The epicyclic gear system comprises elements in the form at least of a central gearwheel and a planetary carrier. Furthermore, the transmission comprises a first connection for driving one of the elements of the epicyclic gear system by way of the input shaft of the range group and a variator, as well as a second connection that can be engaged with the first connection for driving a further element of the elements of the epicyclic gear system. When the second connection is engaged, the input shaft of the range group drives the variator and a drive output of the variator drives the further element of the epicyclic gear system. | 01-09-2014 |
20140038761 | SIMPLE PLANETARY GEARSET CONTINUOUSLY VARIABLE TRANSMISSION - A CVT is provided that includes an input member, an output member, an input disk rotationally coupled to the input member, an output disk having an output gear, a roller disposed between the input disk and the output disk and configured to transfer torque from the input disk to the output disk, a counter gear intermeshed with the output gear, and a planetary gear set connected to the output member. The planetary gear set includes a ring gear, a carrier member, and a sun gear. The ring gear is rotationally coupled to the counter gear. The counter gear and the planetary gear set are co-planar with the output disk. | 02-06-2014 |
20140045637 | DRIVETRAIN PROVIDED WITH A CVT - A compact drivetrain provided with a CVT that can be used in CVT low and high configurations and in a reverse configuration is described herein. In addition to the CVT, the drivetrain includes first and second planetary gear trains compactly mounted in series so as to selectively cooperate with the CVT and a configuration selection system coupled to both first and second planetary gear trains and to the output disk of the CVT for selectively associating the output shaft of the drivetrain to the outputs of the first and second planetary gear trains or to the output disk of the CVT for allowing the three modes of operation. | 02-13-2014 |
20160003334 | SPLIT POWER INFINITELY VARIABLE TRANSMISSION ARCHITECTURE - A transmission includes an input shaft, an output shaft, a variator, a plurality of clutches including a first clutch, a second clutch, a third clutch, a fourth clutch, and a variator bypass clutch, and a plurality of gearsets including a first gearset, a second gearset, a third gearset, and a fourth gearset. The transmission is operable in a plurality of operating modes, including at least mode in which the variator is utilized to provide a transmission ratio varying within a defined range and at least one mode in which the variator is bypassed to provide a fixed transmission ratio. | 01-07-2016 |
20160033021 | TRANSMISSION AND DRIVELINE HAVING A TILTING BALL VARIATOR CONTINUOUSLY VARIABLE TRANSMISSION - A transmission is provided. The transmission includes an input portion drivingly engaged with a power source, a planetary gear, a continuously variable variator, and a clutching device. The planetary gear arrangement has a portion drivingly engaged with the input portion. The continuously variable variator includes a portion which is drivingly engaged with at least one of the planetary gear arrangement and the input portion. The clutching device may be selectively drivingly engaged with a portion of the continuously variable variator. The clutching device and the planetary gear arrangement facilitate a transition between at least two operating modes of the continuously variable variator. | 02-04-2016 |
20160047448 | BALL TYPE CONTINUOUSLY VARIABLE TRANSMISSION - A variable transmission includes an input shaft, a planetary gear set drivingly engaged with a variator comprising, a variator carrier assembly, a first ring assembly, and a second ring assembly; and the output shaft, arranged to produce transmissions with continuously variable or infinitely variable output ratios. | 02-18-2016 |
20160109001 | SPLIT POWER INFINITELY VARIABLE TRANSMISSION ARCHITECTURE INCORPORATING A PLANETARY TYPE BALL VARIATOR WITH MULTIPLE FIXED RANGES AND LOW VARIATOR LOAD AT VEHICLE LAUNCH - A transmission includes an input shaft, an output shaft, a variable-ratio unit, and a plurality of torque transmitting mechanisms. The plurality of torque transmitting mechanisms include a first clutch, a second clutch, a third clutch, and a fourth clutch. The transmission is operable to (i) engage the first clutch and the second clutch in a first operating mode and (ii) engage the first clutch and the third clutch in a second operating mode. The transmission is further operable to (i) engage the fourth clutch and disengage the second clutch during a first period of time and (ii) engage the third clutch and disengage the fourth clutch during a second period of time following the first period of time to transition from the first operating mode to the second operating mode. | 04-21-2016 |
20160109002 | SPLIT POWER INFINITELY VARIABLE TRANSMISSION ARCHITECTURE INCORPORATING A PLANETARY TYPE BALL VARIATOR WITH LOW PART COUNT - A transmission includes a housing, an input shaft, an output shaft, a first gearset, a second gearset, a variable-ratio unit, a first torque transmitting mechanism, and a bypass torque transmitting mechanism. The first gearset is arranged between the input shaft and the output shaft, and the second gearset is coupled to the first gearset between the input shaft and the output shaft. The variable-ratio unit is configured to transmit power between (i) a first member coupled to the input shaft and the first gearset and (ii) a second member coupled to the first gearset. The first torque transmitting mechanism is selectively engageable to couple the second gearset to the housing. The bypass torque transmitting mechanism is selectively engageable to couple the first member to the second member to bypass the variable-ratio unit. | 04-21-2016 |
20160109005 | SPLIT POWER INFINITELY VARIABLE TRANSMISSION ARCHITECTURE INCORPORATING A PLANETARY TYPE BALL VARIATOR WITH LOW VARIATOR LOADING AT VEHICLE LAUNCH - A transmission includes an input shaft, an output shaft, at least four planetary gearsets, a variable-ratio unit, and at least four clutches. The input shaft is configured to receive torque from a drive unit. The output shaft is configured to transmit torque to a load. The at least four planetary gearsets, the variable-ratio unit, and the at least four clutches are arranged between the input shaft and the output shaft. The at least four clutches are selectively engageable in combination with one another to select one of at least four operating modes. | 04-21-2016 |
20160109007 | INPUT CLUTCH ASSEMBLY FOR INFINITELY VARIABLE TRANSMISSION - The present invention provides an infinitely variable transmission for a powered vehicle which includes a power source. The transmission includes an input shaft and an output shaft, the output shaft being spaced from the input shaft. The transmission further includes a variator coupled between the input shaft and output shaft. In addition, at least two planetary gearsets are disposed adjacent to the variator and an input coupler is configured to selectively couple the variator to the power source. | 04-21-2016 |
20160116036 | GEAR SCHEME FOR INFINITELY VARIABLE TRANSMISSION - A gear scheme for an infinitely variable transmission includes an input shaft, an output shaft, a variator, and a pair of planetary gearsets located beside the variator rather than in front of or behind the variator. The variator and the planetary gearsets are coupled between the input and output shafts. | 04-28-2016 |
20180023673 | Continuously variable Transmission | 01-25-2018 |
475215000 | Plural power paths to planetary gearing | 6 |
475216000 | Friction gear engages facing concave surfaces | 6 |
20080261746 | VEHICULAR POWER TRANSMISSION DEVICE - The thrust force of a sun gear is supported by a first thrust bearing that supports a first output shaft in the direction of an axis thereof. The thrust force of a ring gear is supported by a second thrust bearing that supports a second output shaft in the direction of the axis. | 10-23-2008 |
20080261747 | Adjusting device with a CVT planetary roller transmission - An adjusting device including a CVT planetary roller transmission having two axially-spaced sun wheels that are rotatable about a common axis of rotation and at different speeds of rotation. Planet wheels contact and ride against peripheral surfaces of each of the sun wheels, and an axially displaceable ring wheel lies radially outwardly of the sun wheels and engages a peripheral groove formed in the sun wheels. When the ring wheel is axially displaced relative to the sun wheels the axes of rotation of the planet wheels tilt relative to the sun wheel axis resulting in a difference in the rotational speed of the sun wheels changes. The device can be employed as an adjusting device for adjusting the rotational speed of connected units, and also as a drive line component having a variable transmission ratio and situated in a power train of a motor vehicle. | 10-23-2008 |
20080269001 | Drive Mechanism for Infinitely Variable Transmission - A variator transmission comprises an input shaft ( | 10-30-2008 |
20090048054 | CONTINUOUSLY VARIABLE TRANSMISSION - In a continuously variable transmission (“CVT”) using a toroidal-race continuously variable ratio device and a planetary gear mechanism, the rotation of the input shaft ( | 02-19-2009 |
20090203487 | CONTINUOUSLY VARIABLE TORQUE VECTORING AXLE ASSEMBLY - A vehicle driveline having an axle assembly with an input pinion, which is configured to receive a rotary input, a input ring gear, which is meshingly engaged with the input pinion, a first output member, a second output member and a power distribution system. The first output member is configured to drive a first vehicle wheel on a first side of a vehicle. The second output member is configured to drive a second vehicle wheel on a second side of the vehicle opposite the first side. The power distribution system is driven by the input ring gear and distributes drive torque between the first and second output members. The power distribution system includes a first continuously variable transmission. A method for operating a vehicle driveline is also provided. | 08-13-2009 |
20130310208 | CONTINUOUSLY VARIABLE TRANSMISSION DEVICE - Construction is achieved that is capable of ensuring reliability of a learned value for a step position of a stepping motor | 11-21-2013 |