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| Number | Title | Issue Date |
| 7410438 | Switching-valve arrangement for a shifting system of an automatic transmission The invention relates to a switching-valve arrangement for a shifting system of an automatic transmission having a first actuator for engaging and releasing gears, at least a second actuator for engaging and releasing gears, a first activatable switching valve, a se... | 08/12/2008 |
| 7347117 | Hydraulic linear drive of a transmission actuator A hydraulic linear drive for a hydraulic vehicle transmission actuator has a piston/cylinder unit in which an adjusting piston is arranged so it is longitudinally displaceable in a cylinder housing and subdivides the cylinder space into at least two pressure spaces ... | 03/25/2008 |
| 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 |
| 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 |
| 7249665 | Double clutch A double clutch for a transmission with two transmission input shafts is disclosed having two clutches which can rotate about a common rotational axis, are arranged one behind the other in the axial direction, and have a common driving outer plate support and which ... | 07/31/2007 |
| 7240605 | Actuator with a variable run The invention concerns a pneumatic and/or hydraulic actuator. The pneumatic and/or hydraulic actuator is one in which the run of a driving shaft, which is pneumatically operated by a piston, can vary on the basis of the insertion in the body of the actuator or at le... | 07/10/2007 |
| 7204170 | Device for transmitting torque between two rotatable, coaxial shaft members A device for transmitting torque between two rotatable, coaxial shaft members contains a clutch between the two shaft members and engageable to counteract rotational speed differential between the shaft members by a hydraulic piston under the control of an electrica... | 04/17/2007 |
| 7147092 | Multiple clutch unit A multiple clutch unit for a power train. The clutch includes a first clutch, particularly a multiple-disk clutch that is non-rotatably connected to a first shaft. A second clutch, particularly a multiple-disk clutch, is non-rotatably connected to a second shaft and... | 12/12/2006 |
| 7100757 | Clutch device utilizing a compressed air source A clutch device for a vehicle, including a spring device (4), which attempts to force a friction plate (3) in a first direction for engagement of the clutch, a pneumatic actuator (10) with a cylinder (11) and a piston (16), which d... | 09/05/2006 |
| 7083034 | Shift apparatus A gear shift device (2) for a motor vehicle comprises one cylinder (4) loaded with a pressure medium. Situated in said gear shift cylinder (4) is one gear shift piston (12) which divides the gear shift cylinder (4) into two working... | 08/01/2006 |
| 7066305 | Brake bands for an automatic transmission and method for controlling a gear shift in automatic transmission and feedback loop control system A brake band shifting mechanism for an automatic transmission. The brake band shifting mechanism includes a brake band encircling a brake drum of the transmission. A first end of the brake band is mounted to a secured portion of the transmission by a first linkage a... | 06/27/2006 |
| 7047611 | High performance intermediate servo assembly and method of use A high performance intermediate servo assembly wherein the servo piston has been modified to provide at least a 17% increase in surface apply area and a corresponding increase in hydraulic pressure delivered to the 2nd gear clutch band which it actuates. ... | 05/23/2006 |
| 7021443 | Clutch system A clutch system, especially for a motor vehicle, includes a housing that is or can be filled with a fluid, at least one first friction element that is linked with the housing to rotate with the same, and at least one second friction element that is or can be linked ... | 04/04/2006 |
| 6968935 | Shift element sub-assembly for a transmission A shift element sub-assembly for a transmission having two axially adjacent shift elements (2, 3) that are located in a transmission housing (1). The discs of both shift elements (2, 3) lie axially adjacent in the interior of the disc carrier ( | 11/29/2005 |
| 6907974 | High performance intermediate servo assembly A high performance intermediate servo assembly wherein the servo piston has been modified to provide at least a 17% increase in surface apply area and a corresponding increase in hydraulic pressure delivered to the 2nd gear clutch band which it actuates i... | 06/21/2005 |
| 6907975 | Clutch, in particular for motor vehicle, with pneumatic control A clutch for a motor vehicle having an annular diaphragm (54) with a concave clutch characteristic curve and a pneumatic actuator (76) acting on the diaphragm (54) for clutch release. A mechanism (86, 88) is provided to generate a supplem... | 06/21/2005 |
| 6905433 | Device for control of a hydraulically actuatable shifting element A device for control of a hydraulically actuatable shifting element of a motor vehicle transmission, having one clutch piston which defines, with a first surface, a hydraulically pressurizable piston space and, with a second surface of different size, a hydraulicall... | 06/14/2005 |
| 6905009 | Bi-directional clutch having a momentary latching actuator A bi-directional clutch assembly of the present invention is provided that comprises an inner race, an outer race, and an engagement mechanism disposed between said inner race and said outer race. The engagement mechanism is operable to move between a disengaged pos... | 06/14/2005 |
| 6857364 | Clutch for drive elements of a printing machine A device for locking, with respect to a first power transmission element, a further power transmission element that is lockable in a rotational position thereof, provides for the first and the further power transmission element to have a common working chamber with ... | 02/22/2005 |
| 6827194 | Clutch actuation device An actuation device for a shiftable clutch includes a pressure supply for providing a pressure of a pressure medium for actuating the clutch, and a first and a second workspace independently in communication with the pressure supply for receiving the pressure. A fir... | 12/07/2004 |
| 6540059 | Actuation device for a friction clutch in a motor vehicle An actuation device for a friction clutch which is arranged in the drivetrain of a motor vehicle between a drive unit and a transmission arrangement includes a pressure medium force cylinder arrangement for actuating the friction clutch via a release memb... | 04/01/2003 |
| 6378681 | Clutch In a clutch for coupling two shaft sections (2a, 2b) of a drive shaft, in which the shaft sections (2a, b) support an inner clutch ring (8) and an outer clutch ring (9) coplanar thereto and in which the clutch rings (8, 9) are provided with notches (19) w... | 04/30/2002 |
| 6343679 | Hydrodynamic clutch device, in particular hydrodynamic torque converter A hydrodynamic clutch device, especially a hydrodynamic torque converter. The clutch device has a housing in which is formed a fluid chamber. The fluid chamber is divided into two fluid chamber areas by a piston of a lockup clutch, which piston is fixed w... | 02/05/2002 |
| 6305505 | Reduced friction wet disc brake An improve wet disc brake incorporates a two part rotating disc. One of the two parts is selectively rotatable, and the other part is constantly rotating with the rotor. The rotor carries an air supply which creates an air bearing between the constantly r... | 10/23/2001 |
| 6296097 | Hydraulically actuated axle disconnect An axle disconnect assembly for a vehicle having an input shaft and a coaxially arranged output shaft. A collar is splined to one of the shafts and is slidable to selectively engage the other shaft to establish a positive driving connection between the in... | 10/02/2001 |
| 6264009 | Multi-stage wet disc brake A multi-stage wet disc brake assembly has a first actuator is supported within a housing and moveable toward point of friction discs. A second actuator coacts with the first actuator and is moveable relative to the first actuator toward the friction discs... | 07/24/2001 |
| 6253882 | Motor with symmetric braking system A hydraulic brake is interconnected to two ports of a hydraulic motor, the pressurization of either port will act on a unitary brake piston to deactivate a spring loaded brake.... | 07/03/2001 |
| 6176808 | Hybrid vehicle powertrain and control therefor A powertrain assembly for an automotive vehicle having an interanal combustion engine and transmission gearing for delivering engine torque to traction wheels of a vehicle. An electric induction motor is situated in the torque flow path between the engine... | 01/23/2001 |
| 6142280 | Oil pressure circuit in a starting clutch In order to accurately control the operation between the fastening and liberation of a clutch piston, a cooling oil path and a drain oil path are provided independently of a clutch liberating oil path and a clutch fastening oil path, respectively.... | 11/07/2000 |
| 6079539 | In-line axle disconnect assembly A part time four wheel drive vehicle has an axle disconnect in its auxiliary drive axle. The axle disconnect comprises a vacuum motor and a tubular shift fork that drives a clutch sleeve so that the clutch sleeve translates between a first position where ... | 06/27/2000 |
| 6076643 | Fluid-driven clutch The invention relates to a fluid-driven clutch in which a non-rotatable clutch ring is axially slidable on a shaft via a fluid introduced into a pressure chamber for transmission of the driving force through a tooth system engaged with a corresponding clu... | 06/20/2000 |
| 6000518 | Clutch transmitting rotating motion A clutch for transmitting rotating motion includes a clutch body, ring flanges positioned an exterior of the clutch body, a belt pulley positioned between the ring flanges and a hydraulic arrangement for producing axial motion and an axial force, causing ... | 12/14/1999 |
| 5950785 | Hub clutch assembly A hub clutch assembly mounted between an axle and a hub of a four-wheel drive vehicle and having a 2WD/4WD position indicator that is simple in structure. A slide ring is axially slidably mounted on the axle. The slide ring is biased by a spring to a posi... | 09/14/1999 |
| 5944627 | Piston with two piston members for transmission servo assembly A replacement mechanism or servo assembly for applying a band to an input member of an automatic transmission includes a housing in which an apply piston is located and to which an apply pin is connected. The piston is sealably movable in the housing and ... | 08/31/1999 |
| 5881858 | Hydraulic servo-mechanism for an automatic transmission A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band br... | 03/16/1999 |
| 5871073 | Wet type frictional engagement device A wet type frictional engagement device includes a hydraulic fluid feed device for feeding hydraulic fluid between a pair of friction plates which are frictionally engaged with each other by a pushing element. By feeding hydraulic fluid between the pair o... | 02/16/1999 |
| 5788038 | Anti-gear-hopping device Anti-gear hopping device for a power transmission mechanism for an automotive vehicle. The power transmission mechanism may be a torque transfer case of a four wheel drive system. The anti-gear hopping device prevents undesired shifting between high range... | 08/04/1998 |
| 5535869 | Pulse actuated clutch for vehicle drive lines An impulse actuated clutch with latch for a drive line of a vehicle. The impulse actuated clutch has a coupling member that is permanently engaged with one of a driven member and a driving member. The coupling member is movable in a first direction to eng... | 07/16/1996 |
| 5469950 | Device for transmitting torque between two rotatable shafts A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) in a stationary housing (4) has a clutch (11, 12) engageable to counteract differential rotational speed between the shaft members. A hydraulic clutch piston (14) is arra... | 11/28/1995 |
| 5234087 | Pressure medium actuated method and friction clutch with exclusively axially movable friction discs A pressure medium actuated friction clutch with axially movable friction discs is engaged by at least one engagement spring and by an engagement actuator, and can be disengaged by a disengagement actuator In the steady-state engaged condition, only the sp... | 08/10/1993 |
