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| Number | Title | Issue Date |
| 8146725 | Friction plate and wet-type multi-plate clutch having such friction plate The present invention provides a friction plate having a friction surface formed by sticking an annular friction material to a substantially annular core plate and wherein the friction surface is provided with a first oil groove having an opening portion opened to a... | 04/03/2012 |
| 8087506 | Multiple-disk brake in an automatic transmission having controllable cooling oil supply and method for operating the same The invention concerns a multi-disk brake (1) in an automatic transmission, with an inner disk carrier (4) and an outer disk carrier (6), with inner disks (3) and outer disks (5) arranged axially in alternation on the disk carriers... | 01/03/2012 |
| 8061497 | Disk clutch or multiple disk brake comprising a multi-part disk carrier A disk clutch or brake, with inner and outer disk carriers that respectively carry inner and outer disks. The inner and outer disks are arranged axially in alternation next to one another. At least one of the inner and outer disk carriers have radial openings throug... | 11/22/2011 |
| 8051968 | Clutch unit including a wet clutch A clutch unit for use in the drive train of a motor vehicle between a drive unit and a transmission including at least one transmission input shaft. The clutch unit includes at least one wet clutch device that is provided with a plurality of clutch elements, in part... | 11/08/2011 |
| 7975822 | Multi-plate frictional engagement apparatus Three external tooth wet friction materials are each composed of an external tooth plate and a lining adhered to one surface thereof along an entire circumference. Three internal tooth wet friction materials are each composed of an internal tooth plate and a lining ... | 07/12/2011 |
| 7958983 | Hydraulic system in motor vehicles A hydraulic system in motor vehicles with at least one hydraulically actuated clutch, which entails minimized control complexity for supplying the clutch with hydraulic oil and which takes up less structural space. These characteristics are achieved essentially in t... | 06/14/2011 |
| 7921975 | Hydraulic clutch device A clutch actuation mechanism having a plurality of friction plates engaged with a clutch outer and a clutch inner in a relatively non-rotatable manner and arranged alternately between a bearing plate portion and a pressing plate portion. A clutch disengage/engage co... | 04/12/2011 |
| 7806245 | Clutch system A clutch system selectively transmitting torque in an automatic transmission according to an exemplary embodiment of the present invention may include: a rotation axis rotated by the torque; at least one plate disposed at an exterior of the rotation axis and moved a... | 10/05/2010 |
| 7798300 | Transmission module for an engine-transmission unit, especially for motor vehicles The invention relates to a transmission module (10) for an engine-transmission unit, said module comprising an input shaft (11) for connecting to a heat engine, an output shaft (12) for connecting to a gearbox, and a clutch (30) connectin... | 09/21/2010 |
| 7798301 | Segmented core plate and friction disc Segmented steel core plates for either double sided or single sided wet clutch friction plates or separator plates and a process for making the same are disclosed. ... | 09/21/2010 |
| 7789209 | Friction plate and wet-type multi-plate clutch The present invention provides a friction plate having a friction surface formed by adhering a friction material to a substantially annular core plate and wherein the friction surface is provided with an oil passage communicated with inner and outer peripheral edges... | 09/07/2010 |
| 7775336 | Friction engagement device Lubricating oil supply holes are drilled into a first member that is fitted to a plurality of first annular plates by a spline. Of splines to which each lubricating oil supply hole corresponds, lubricating oil grooves provided in the plurality of first annular plate... | 08/17/2010 |
| 7766144 | Clutch plate with internal fluid channels A clutch plate assembly is provided having a friction interface and internal fluid passages for delivering pressurized fluid to the friction interface to cool the interface, and to reduce spin losses through the clutch assembly. The fluid passages comprise a plurali... | 08/03/2010 |
| 7740119 | Hydraulic control for a dual clutch transmission A double clutch gearbox, which has a first volume flow valve for actuating a first clutch, which is arranged downstream, a second volume flow valve for actuating a second clutch which is arranged downstream, and a first hydraulic power source for supplying the volum... | 06/22/2010 |
| 7694794 | PTO clutch with lubrication oil shut-off valve and integrated relief valve A PTO clutch includes a lubrication shut-off valve that can slide between a first position blocking a port for lubrication oil to lubricate the PTO clutch, and a second position opening the port to lubricate the clutch. A relief valve is provided in the lubrication ... | 04/13/2010 |
| 7677375 | Drive force transmission device A drive force transmission device has an outer clutch plate and an inner clutch plate, which are rotatable relative to each other about a common rotational axis. The inner and outer clutch plates become frictionally engaged with each other with lubricant oil provide... | 03/16/2010 |
| 7673730 | Coolant distribution device A coolant distribution device for a wet-running clutch device and comprising several coolant distribution surfaces along which coolant is conveyed outwards in the radial direction. In order to increase the service lifetime of a wet-running clutch device the coolant ... | 03/09/2010 |
| 7455159 | Torque transmitting unit and power train having a torque transmitting unit A torque transmitting unit in the power train of a motor vehicle for transmitting torque between an engine crankshaft, and a transmission having at least one input shaft with at least one friction clutch. The transmission input shaft is coupled with the crankshaft b... | 11/25/2008 |
| 7431138 | Start-up clutch assembly A start-up clutch including a disk clutch having an outer disk carrier and an inner disk carrier with a multi-disk clutch pack disposed therebetween. The multi-disk clutch pack is adapted to engage and provide torque translation between the inner and the outer carri... | 10/07/2008 |
| 7383932 | Clutch hub A clutch hub provided with a side wall at an end of a cylindrical portion. The cylindrical portion is formed to have convexed and concaved portions to serve as a spline and an oil passage is formed on a tooth of the spline. An oil dam is formed by plastic deformatio... | 06/10/2008 |
| 7357237 | Clutch transmission and method for lubricating and cooling the same The invention relates to a clutch transmission and a method of operating the same. The clutch transmission has a transmission element that is accommodated in a transmission chamber, a clutch element accommodated in a clutch chamber, and a hydraulic controller compri... | 04/15/2008 |
| 7350631 | Automatic transmission An automatic transmission includes a clutch drum formed, by press forming, with splines including recessed portions and raised portions, and engaging with clutch plates; and a rotational speed measuring device configured to measure a rotational speed of the clutch d... | 04/01/2008 |
| 7341026 | Propulsion system and method for optimising power supply to the cooling system thereof A drive train system having a driving engine that has a cooling system for cooling the driving engine is provided. The cooling system has a coolant circuit, a cooling device, and a fan that is associated with the cooling device and that is in driveline connection wi... | 03/11/2008 |
| 7331173 | Hydraulic system for a gearbox comprising a starting clutch A hydraulic system (1) for a transmission with a starter clutch is described. The hydraulic system (1) is designed to comprise a primary circuit (24) and a secondary circuit (5). A cooling system (9) for the starter clutch, a radia... | 02/19/2008 |
| 7325291 | Method for assembling a clutch system A method for assembling a clutch system on a drivetrain is proposed in which the clutch system is mounted on the transmission and in which the transmission is then connected to the engine block. ... | 02/05/2008 |
| 7320391 | Alternative pack designs for multidisk clutches A method and apparatus reduces hot spotting in transmission clutch packs actuated by a piston with axial fingers engaging the clutch pack. The method and apparatus combine an alternative pack arrangement with the fingered actuator, the alternative pack preferably be... | 01/22/2008 |
| 7318512 | Dual clutch transmission with radially nested clutches having a common disk carrier A dual clutch transmission having radially nested clutches includes an outer clutch having a plurality of first outer clutch disks, a plurality of first inner clutch disks, and a first inner support carrier, with the first inner clutch disks operatively mounted to t... | 01/15/2008 |
| 7311187 | Dual clutch transmission clutch cooling circuit A hydraulic circuit for controlling the application of pressurized cooling fluid to the clutches of a dual clutch transmission including a cooling unit in fluid communication with a source of the pressurized cooling fluid and adapted to exchange heat from the coolin... | 12/25/2007 |
| 7308977 | Clutch assembly and method of reversing cooling fluid flow A clutch assembly for a transmission having a pressurized fluid source includes selectively engageable clutch plates including an apply plate. A piston is movable between an apply position and a release position to respectively engage or release the clutch plates. A... | 12/18/2007 |
| 7303053 | Non-pressure head with integrated piston stop and vent/drain A non-pressure head for a fluid cylinder, which includes a drain channel formed in the flange by a raised portion of the flange extending from a plane of the flange in the same direction as the head portion. The channel is cold formed in the flange. For the piston s... | 12/04/2007 |
| 7287632 | Vehicle clutch basket A clutch basket is provided having an upper side with upstanding fingers. The fingers include opposing side edges that are engaged by tabs that extend from the periphery of a clutch drive disc. Each finger is provided with a wear resistant shield structure that over... | 10/30/2007 |
| 7287634 | Torque transmitting unit and drive train for it The invention relates to a torque transmission device, especially for a drive train comprising an internal combustion engine and a twin-clutch transmission having two transmission input shafts and one transmission output shaft, each transmission input shaft being co... | 10/30/2007 |
| 7281613 | Interface disc for a torque and/or rotational control apparatus A friction disc (16) for a torque and/or rotational control apparatus includes elongated and shortened fins (42, 43) upstanding between and equally circumferentially spaced intermediate first and second component discs (40, 41). The fins (42,... | 10/16/2007 |
| 7281619 | Multiple-disk brake or clutch A multiple-disk brake or clutch (1) includes at least one disk (2, 4) in a housing and at least one disk located on a shaft. Coolant is located in the housing (3). A coolant outlet (10) and a coolant inlet (7) of a cooling circuit ... | 10/16/2007 |
| 7264101 | Start-up clutch and torsional-vibration damper assembly A start-up clutch and torsional-vibration damper assembly including a disk clutch having an outer disk carrier and an inner disk carrier, and a torsional vibration damper having a primary element, a secondary element, and a spring dampening mechanism. The spring dam... | 09/04/2007 |
| 7261195 | Power transfer devices with on-demand lubrication systems A vehicle includes an engine that generates drive torque and a power transfer device that selectively transfers the drive torque to a driveline. The power transfer device includes an input shaft, an output shaft and a torque biasing system. The torque biasing system... | 08/28/2007 |
| 7249663 | Wet clutch friction plate and method The present invention provides a friction plate with features to provide additional cooling for use within a wet clutch system. The friction plate has a core plate with a friction facing layer affixed to each face of the core plate. The first friction facing layer h... | 07/31/2007 |
| 7240413 | Process and device for producing clutch friction plate A process for producing a clutch friction plate in which a plurality of friction material segments are bonded to an annular flat face of an annular core plate so that oil channels are formed between the segments, the process including: a step of forming a plurality ... | 07/10/2007 |
| 7234580 | Method for optimizing groove structure of friction plate of wet type friction engagement apparatus The object of the present invention is to provide an optimizing method for a groove structure of a friction disk of a wet-type friction engaging element, which can reduce drag torque by increasing outgoing flow of lubricating oil on the friction surface and increasi... | 06/26/2007 |
| 7216750 | Clutch arrangement A clutch arrangement for a motor vehicle has a clutch housing that is filled with pumped medium in the form of fluid, a first friction element being rotatable in common with the clutch housing. Further, a second friction element is provided which is rotatable in com... | 05/15/2007 |
