Patent application number | Description | Published |
20110111917 | GEAR RETENTION ASSEMBLY - A gear retention assembly for retaining a gear that has a plurality of gear outer splines includes a gear housing and a retaining ring. The gear housing has a first end, a second end, and a plurality of inner splines each including a ramp portion. The second end of the gear housing includes an annular continuous rolled lip, where the continuous rolled lip and the ramp portions of the plurality of inner splines define a groove. The plurality of inner splines engage with the gear outer splines of the gear to transmit torque between the gear and the gear housing. The retaining ring is disposed in the groove and axially retains the gear. The rolled lip axially retains the retaining ring. | 05-12-2011 |
20110147155 | CLUTCH ASSEMBLY - A clutch assembly for transmitting a first torque between a first member and a second member includes a first clutch and a second clutch. The first clutch is disposed between the first member and the second member and has a predetermined design torque. The second clutch is disposed in series with the first clutch between the first member and the second member and has a predetermined holding torque that is less than the predetermined design torque. The second clutch allows rotation between the first member and the second member when the first torque is greater than the predetermined holding torque. | 06-23-2011 |
20110308911 | TORQUE TRANSMITTING DEVICE WITH APPLY PLATE DRAIN - A torque transmitting device having an apply/return plate or member is provided. The torque transmitting device includes a hydraulically actuated piston and a clutch pack. The plate includes an annular disc having an inner edge and an outer edge and having a first side and a second side. A plurality of tabs extend radially out from the outer edge. A plurality of drain holes are disposed through the annular disc extending between the first side and the second side and located between the outer edge and the inner edge. The plate contacts the clutch pack to engage the clutch pack when translated by the piston and hydraulic or lubrication fluid communicates through the drain holes. | 12-22-2011 |
20120061203 | CAST-IN SPLINE SLEEVE FOR CLUTCH HUB - A composite, i.e., two element, two material clutch hub includes an inner sleeve of a heavy, high strength material to and about which is cast an outer element of a lighter, lower strength material. The sleeve typically includes a splined opening that is received on one or two complementarily splined shafts and a plurality of radially oriented pins or lugs or a discontinuous flange about which the outer element is cast. The outer element is splined to the friction plate of a clutch or other component. The high strength material is preferably, though not necessarily, steel and the lighter material is preferably, though not necessarily, an aluminum alloy. Alternatively, the sleeve may be a high strength aluminum alloy such as a metal matrix composite (MMC) and the outer element may be a lower strength, different aluminum alloy. | 03-15-2012 |
20120078480 | METHOD OF COOLING A DUAL CLUTCH TRANSMISSION - A method of cooling a dual clutch transmission is provided. The transmission has first and second input clutches alternately engagable to transfer torque to an output member along first and second input shafts, respectively, at various speed ratios dependent upon engagement of synchronizers. The method includes determining a currently established speed ratio by determining which of the input clutches and synchronizers are currently engaged and which of the input clutches and synchronizers are currently open. One of the open synchronizers is then engaged during the currently established speed ratio to cause the open input clutch to rotate at a speed greater than the speed of rotation of the engaged input clutch, thereby creating a fan cooling effect. | 03-29-2012 |
20120136518 | SELECTABLE ONE-WAY CLUTCH OPERATION IN A HYBRID POWERTRAIN - A hybrid powertrain includes a plurality of torque generative devices, a transmission input shaft, and a planetary gear set connecting the torque generative devices to the transmission input shaft. A method to control the powertrain includes monitoring a desired configuration of the powertrain and selectively grounding a gear of the planetary gear set with a selectable one way clutch based upon the desired configuration of the powertrain. | 05-31-2012 |
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 |
20140069763 | TRANSMISSION AND A CLUTCH ASSEMBLY FOR A VEHICLE - A transmission and a clutch assembly for a vehicle are disclosed. The clutch assembly includes a housing defining a cavity presenting an interior surface. The interior surface defines a pocket along a longitudinal axis. The clutch assembly further includes a piston disposed in the pocket and movable between an initial position and a final position relative to the pocket along the longitudinal axis. The piston includes a plurality of flanges extending outwardly away from the longitudinal axis. The clutch assembly also includes a biasing member attached to the interior surface of the housing and engaging the piston to continuously bias the piston toward the initial position. The biasing member abuts the flanges of the piston to prevent rotation of the piston about the longitudinal axis as the piston moves between the initial and final positions along the longitudinal axis. | 03-13-2014 |
20150014115 | ELECTRICALLY ACTUATED ROTATING BAND TORQUE TRANSMITTING MECHANISM FOR HYBRID AND OTHER TRANSMISSIONS - A torque transmitting mechanism includes a drum attached to one of a first member and a second member, and a shell attached to another of the first member and the second member. The drum and the shell are concentrically disposed about a longitudinal axis, with the shell concentrically disposed about the drum. An electric motor includes a stator, and a first rotor rotatable about the longitudinal axis relative to the stator. A band is coupled to the shell, wrapped around the drum between four and twelve complete revolutions, and includes a first end attached to the first rotor for rotation with the first rotor. The band includes a second end attached to a reaction member. Rotation of the first rotor tightens the band against the drum to bias the drum against the shell, to transmit torque between the first member and the second member. | 01-15-2015 |