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| Number | Title | Issue Date |
| 8172053 | Hydraulic circuit arrangement for operating a hydrodynamic torque converter A hydraulic circuit arrangement for operating a hydrodynamic torque converter (1, 10) with a converter bridging clutch (11). The circuit arrangement comprises a hydraulic switching unit (3, 14) having at least one valve for controlling an inflow... | 05/08/2012 |
| 8127905 | Series damper with hysteresis in one damper A series damper, including: a first damper with a flange and a cover plate; and a second damper with first and second cover plates and a flange. The flange and the cover plate for the first damper are rotationally frictionally engaged and the flange for the second d... | 03/06/2012 |
| 8123011 | Hydrokinetic coupling device comprising friction disc carried by rotating linking element of turbine wheel with damper plate A hydrokinetic coupling device (10), which comprises an axis of rotation (B) and a torque converter (12), comprising a turbine wheel (22) mounted rotationally around a rotary driven shaft, as well as a circumferential damping device (40),... | 02/28/2012 |
| 8113325 | Hydrodynamic clutch arrangement A hydrodynamic clutch device used to establish and to release a working connection between a drive and a takeoff is disclosed. The device includes a housing capable of rotating around an axis of rotation, the housing containing a torus space, which forms a torus vol... | 02/14/2012 |
| 8056686 | Torque converter with cover plate directly attached to piston A torque converter includes a turbine, a lockup clutch including a piston, and a damper having at least one cover plate, the cover plate being attached directly to piston. A method for assembling the torque converter includes passing a section of the piston through ... | 11/15/2011 |
| 8047345 | Multi-plate clutch and hydrodynamic torque converter device having said multi-plate clutch A multi-plate clutch (2) having a first plate carrier (48) and second plate carrier (50) and one or more first plates (52) received by the first plate carrier and one or more second plates (54) received by the second plate carrier,... | 11/01/2011 |
| 8047344 | Torsional vibration damper and hydrodynamic torque converter device for an automotive drive train A torsional vibration damper (10) and a hydrodynamic torque converter device (1). The converter device has a converter torus (18) which is configured by an impeller (12), a turbine wheel (14) and a stator (16), and a convert... | 11/01/2011 |
| 8047346 | Pilot for a series damper A damper for a torque converter, including: a cover plate for a damper; a turbine hub with a surface; and a pilot element rotationally connected to the cover plate and having a surface slidingly engaged with the surface for the turbine hub. The respective surfaces f... | 11/01/2011 |
| 8025136 | Torque converter damper flange with turbine centering feature A torque converter including a turbine, an output shaft, and a damper having at least one cover plate radially fixed to the turbine, a flange driven by the damper and non-rotatably connected to the output shaft, the flange having an axially extending surface centeri... | 09/27/2011 |
| 8020680 | Hydrodynamic torque converter device for an automotive drive train A hydrodynamic torque converter device for an automotive drive train, comprising a torsional vibration damper and a converter torus which is formed by an impeller, a turbine wheel and a stator. The torsional vibration damper has a first energy accumulating device wi... | 09/20/2011 |
| 8016091 | Solid stop leaf spring A piston plate stop for a torque converter including: a flexible connection element with a first end and a second end, the first end arranged to connect to a piston plate for the torque converter, the second end arranged to rotationally connect to a cover for the to... | 09/13/2011 |
| 7992694 | Seal for torque converter lockup clutch A method and a sealing system for sealing the space between a piston and the hub of a torque converter lockup clutch is provided. According to the method and the sealing system, the seal is pretensioned with its cylindrical surface facing the piston bore. In an embo... | 08/09/2011 |
| 7980370 | Lockup device and hydraulic torque transmission device provided with the same A lockup device 7 of a torque converter 1 is formed of a piston 75, a clutch plate 80, and a damper mechanism 9. The clutch plate 80 has a first passage P1 connecting an inner space S3 on the radially inner sid... | 07/19/2011 |
| 7934588 | Torque damper A torque damper can comprise a clutch piston arranged within a cover of a torque converter and can be adapted to be moved between a connected position and a non-connected position relative to the cover. Damper springs can be arranged along the circumference of the c... | 05/03/2011 |
| 7909151 | Lock-up clutch mechanism The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover having an engagement surface capable of being engaged with the lock-up piston and in which a friction material is stuck to wither one of t... | 03/22/2011 |
| 7905337 | Force transmission device A force transmission device including an input and an output, a hydrodynamic component, having at least one pump shell and one turbine shell, and a device for damping vibrations including a primary component and a secondary component, rotatable relative to each othe... | 03/15/2011 |
| 7849985 | Pilot plate torque transmitting assembly for a torque converter A pilot plate torque transmitting assembly for a torque converter, including: a pilot plate arranged to be rotationally connected to a housing for the torque converter; a piston plate for a clutch; and at least one spring assembly rotationally connecting the pilot p... | 12/14/2010 |
| 7823710 | Hydraulic control system for a hydrodynamic torque converter comprising a controlled torque converter lockup clutch Description of a hydraulic control system (1A) for a hydrodynamic torque converter (1) with a controlled torque converter lockup clutch (2) of an automatic transmission for controlling a supply pressure (p_WD_zu) of the torque converter (2 | 11/02/2010 |
| 7815027 | Lock-up clutch mechanism The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the fr... | 10/19/2010 |
| 7775335 | Torque transmitting device The invention relates to a torque transmitting device having a hub arranged in the drive train of a motor vehicle for transmitting torque between a drive unit and a transmission, in particular a turbine wheel hub of a turbine wheel of a torque converter which is cou... | 08/17/2010 |
| 7770705 | Forged piston plate drive lugs A drive lug for a piston plate in a torque converter, including a base operatively arranged for attachment to the piston plate and a protruding portion integral to the base and extending axially from the base. The protruding portion is operatively arranged to engage... | 08/10/2010 |
| 7770704 | Universal multiplate torque converter clutch system and method of use A multiplate torque converter clutch system, which is adapted for installation in torque converters of different automatic transmission manufacturers, namely, BORG WARNER, ALLISON, FORD, GENERAL MOTORS, and CHRYSLER transmissions. The present multiplate torque conve... | 08/10/2010 |
| 7770703 | Lock-up torque converter and method of locking up a torque converter A torque converter having an internal lock-up clutch which is activated by the elastic expansion or ballooning of the torque converter housing. This ballooning occurs due to the increased internal fluid pressure within the torque converter. ... | 08/10/2010 |
| 7757827 | Lockup clutch A lockup clutch for a torque converter is provided with a friction lining. The friction lining is divided into a radially-outer-side friction lining and a radially-inner-side friction lining. μ-ν characteristics of the radially-outer-side friction lining have a po... | 07/20/2010 |
| 7757828 | Clutch attached to an outer rim of a torque converter The present invention broadly comprises a torque transfer apparatus for a torque converter including at least one connection element attached to an inner circumferential surface for a cover of the converter; a lock-up clutch, and at least one resilient element conne... | 07/20/2010 |
| 7753183 | Outer plate with arc spring drive tab for a torque converter damper A torque converter with a casing, a turbine, and a piston having a first friction surface located at a radially outer portion of the piston, and a first drive ring having second and third friction surfaces. The piston is displaceable to engage the first and second f... | 07/13/2010 |
| 7731005 | Lock-up clutch mechanism for torque converter The present invention provides a lock-up clutch mechanism for a torque converter, in which a plurality of friction materials are arranged concentrically in a radial direction and adjacent friction materials are integrally connected to each other. ... | 06/08/2010 |
| 7717244 | Replacement torque converter cover assembly A replacement torque converter cover designed to withstand mechanical stresses generated in the torque converter lock-up clutch of ALLISON transmissions when such transmissions are utilized with diesel engines and other high-torque truck engines. The original equipm... | 05/18/2010 |
| 7694789 | Starting unit The invention relates to a starting unit comprising: an input, which can be coupled to a drive, and an output that can be coupled to a driven part; a starting element provided in the form of a hydrodynamic component, comprising at least one primary turbine wheel and... | 04/13/2010 |
| 7677373 | Lock-up clutch control method A torque converter lock-up clutch may be controlled by a lock-up clutch regulator control valve. The valve is utilized to selectively direct a fluid to the torque converter or to a pressure regulator valve. For example, in a hydrodynamic condition of the torque conv... | 03/16/2010 |
| 7669701 | Hydraulic pressure control apparatus for a vehicular power transmitting device A first orifice is provided in a first fluid passage upstream of a cooler, and a second orifice is provided in a second fluid passage. The flowrates of hydraulic fluid flowing through the first and second fluid passages are regulated by the first and second orifices... | 03/02/2010 |
| 7648009 | Torsional vibration damper A torsional vibration damper for a bridging clutch of a hydrodynamic clutch arrangement has a drive-side damping device, which can be brought into working connection with the housing of the clutch arrangement and is provided with a drive-side transmission element, w... | 01/19/2010 |
| 7644811 | Lock-up device of hydraulic torque transmitting apparatus A lock-up device 7 includes a front cover 2, an impeller 3, a turbine 4, and a piston 22 positioned to divide a space between the front cover 2 and the turbine 4, and is engageable with the front cover 2. The p... | 01/12/2010 |
| 7628260 | Control system and method for lock up clutch A lock-up clutch control method and apparatus controls a lock-up state of a torque converter interposed between a drive unit and a transmission on a vehicle. Data indicative of the operating condition of an antilock braking system can be provided as input to the con... | 12/08/2009 |
| 7621385 | Electronically controlled converter clutch for an automatic transmission The apparatus of the present invention provides a torque converter for an automatic transmission. The torque converter includes an electronically controlled converter clutch disposed within a torque converter housing. A release passage in fluid communication with th... | 11/24/2009 |
| 7611001 | Plugged filter detection system A plugged filter detection system includes a valve housed within a cavity defining an initial inlet for receiving fluid at an inlet pressure before fluid enters a filter, a final inlet for receiving fluid at an outlet pressure after the fluid exits the filter, and a... | 11/03/2009 |
| 7565958 | Torque converter race kit A hybrid GENERAL MOTORS 4L80E torque converter and a method of converting a GENERAL MOTORS 4T40E torque converter core into the present hybrid GENERAL MOTORS 4L80E torque converter for high performance applications. The present invention includes GENERAL MOTORS 4L80... | 07/28/2009 |
| 7543694 | Hydrokinetic coupling device, particularly for a motor vehicle The invention relates to a hydrokinetic coupling device (10) characterized by the fact that the web (74) comprises, at the inner radial end thereof, a collar (86), which axially extends toward the front between the turbine wheel (32) and ... | 06/09/2009 |
| 7513345 | Slip clutch cooling configuration The present invention is one or more torque converter clutch friction pad attached to a friction plate configured to more easily remove heat generated by the friction of a clutch engaging the friction plate. The invention resides in one or more circular grooves set ... | 04/07/2009 |
| 7503441 | Torque converter In one embodiment, a torque converter includes a two-piece cover, an impeller, a turbine, and a lockup clutch. The two-piece cover includes a base plate that is configured for attachment to a drive member. The base plate has a plurality of lugs around the periphery ... | 03/17/2009 |
