| Patents for F16D 48 - External control of clutches (10,172) |
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| 10/11/1990 | DE4011333A1 Blocking differential for vehicle all-wheel drive - with blocking signal derived from existing ABS processor and using existing wheel speed sensors |
| 10/11/1990 | DE4010551A1 Antiskid braking for vehicle driven axle - with clutch to block differential action on uneven grip road |
| 10/09/1990 | US4961476 Arrangement for controlling the power transmission to at least two axles of a motor vehicle |
| 10/04/1990 | WO1990011460A1 Load piston reset control mechanism |
| 10/03/1990 | EP0390362A2 Power transmission system of a motor vehicle |
| 10/03/1990 | EP0389567A1 Vehicle with driven steering axle. |
| 09/27/1990 | DE3909032A1 Automatic clutch operation with return device |
| 09/26/1990 | CN1009748B Ratio valve to control unloading of modulating relief valve |
| 09/25/1990 | US4958538 Method and apparatus for controlling line pressure of continuously variable transmission system |
| 09/25/1990 | US4958495 Hydraulic differential cylinder |
| 09/13/1990 | DE4006653A1 Gearshift control with automatic control of clutch |
| 09/11/1990 | US4955848 Transfer device of four-wheel-drive vehicle |
| 09/11/1990 | US4955198 Clutch booster |
| 09/05/1990 | EP0385629A2 Method and system for updating of control parameter value indicative of master clutch point of incipient engagement |
| 09/04/1990 | US4953654 Vehicular differential limiting torque control system |
| 08/30/1990 | DE4002035A1 Motor vehicle driving force distribution control system |
| 08/29/1990 | CN1009350B Method for controlling amt system including wheel lock-up detection and toterance |
| 08/28/1990 | US4951795 Modulation valve device |
| 08/28/1990 | US4951775 Front wheel drive clutch control system |
| 08/22/1990 | EP0383731A1 A device for the automatic engagement and disengagement of the clutch of a motor vehicle |
| 08/22/1990 | EP0383688A1 Manual gearbox ratio-detecting device associated with a linkage of a control system for an automatic clutch |
| 08/21/1990 | US4949828 Apparatus and method for sensing clutch slippage |
| 08/21/1990 | US4949590 Hydraulic cylinder assembly |
| 08/14/1990 | US4949264 Transmission having electromagnetic proportional reduction valve |
| 08/14/1990 | US4947971 Control system for a clutch for a motor vehicle |
| 08/14/1990 | US4947970 Dual clutch control system |
| 08/14/1990 | CA1272663A2 Valve assembly |
| 08/09/1990 | DE4002821A1 Torque distribution controller for four-wheel-drive vehicle - provides independent slip-corrective braking to individual wheels while adjusting engine output torque to maintain traction |
| 08/08/1990 | EP0380564A1 Process and device for controlling a motor vehicle transmission line. |
| 08/08/1990 | EP0380537A1 Clutch control |
| 08/07/1990 | US4946015 Vehicle traction control system |
| 07/31/1990 | CA1272046A1 Gear protection system for grinding mills |
| 07/26/1990 | DE3900987A1 Fluid-actuated transmission clutch |
| 07/25/1990 | EP0378687A1 Clutch oil pressure controller of transmission |
| 07/24/1990 | US4943920 Operation control method for a frictional engagement element |
| 07/24/1990 | US4942950 Method and apparatus for controlling an electromagnetic clutch for use on a vehicle |
| 07/24/1990 | US4942787 Apparatus for and method of controlling hydraulic clutch operation in an automatic transmission |
| 07/18/1990 | EP0377644A1 Hydraulic gearshift |
| 07/12/1990 | WO1990007438A1 Control device for the automatic actuation of vehicle clutches |
| 07/10/1990 | US4941095 Integrated four-wheel steer and differential slip control system |
| 06/27/1990 | EP0375512A1 Electropneumatic clutch control device |
| 06/27/1990 | EP0375162A2 Vehicle clutch control system |
| 06/26/1990 | US4936430 Control hydraulic circuit for speed change clutch |
| 06/19/1990 | US4934218 Hydraulic control device for an automatic transmission |
| 06/13/1990 | EP0371975A1 Clutch. |
| 06/13/1990 | CN1008344B Method of and apparatus for controlling clutch |
| 06/05/1990 | CA1269913A1 Ratio valve to control unloading of modulating relief valve |
| 06/05/1990 | CA1269912A1 Control system for independent control of fluid actuated devices |
| 05/31/1990 | WO1990005866A1 Process for controlling a clutch |
| 05/23/1990 | EP0368922A1 Servo-assisted gear selector. |
| 05/23/1990 | DE3937976A1 Vehicle clutch regulation system - compares detected difference in rotation of driving and driven shafts with limit value for clutch adjustment |
| 05/22/1990 | US4926994 Automatic clutch control apparatus |
| 05/17/1990 | DE3838545A1 Magnetic coupling |
| 05/16/1990 | EP0368140A2 Method for adjusting friction clutches or brakes |
| 05/16/1990 | EP0367962A1 Process and apparatus for controlling a locking differential |
| 05/16/1990 | EP0212900B1 Method and apparatus for controlling an electro-magnetic particle clutch |
| 05/15/1990 | US4924992 Anti-vibration mechanism for a clutch pedal |
| 05/15/1990 | US4924983 Propelling clutch apparatus for a working vehicle |
| 05/15/1990 | US4924979 Hydraulic lock-up control system during shifting in automatic transmission |
| 05/15/1990 | US4924673 Master cylinder with parallel-bore reservoir |
| 05/15/1990 | CA1268963A1 Clutch-to-clutch power-on downshifting in a motor vehicle automatic transmission |
| 05/09/1990 | EP0367160A1 Transmission arrangement for a motor vehicle |
| 05/09/1990 | EP0366665A1 Transmission. |
| 05/02/1990 | EP0295275B1 Adaptor for operating the shaft connection of motor vehicles |
| 05/01/1990 | US4921065 Four-wheel drive motor vehicle having a controlled differential device |
| 05/01/1990 | US4921060 Integrated roll rigidity and differential slip control system |
| 05/01/1990 | US4920929 Variable speed coupling system for cooling an engine |
| 05/01/1990 | US4920861 Load piston reset control mechanism |
| 04/25/1990 | EP0364513A1 Modulating inching valve with automatic pressure control. |
| 04/25/1990 | EP0364471A1 A hydraulic actuator for connection to a reservoir. |
| 04/24/1990 | US4918921 Coaxial push rod and hollow screw ball nut drive for master cylinder |
| 04/10/1990 | US4915190 Control system for split axle drive mechanism in part-time four-wheel drive vehicle |
| 04/05/1990 | DE3926487A1 Drehmomentverteilungssteuervorrichtung fuer ein kraftfahrzeug Torque distribution control device for a motor vehicle |
| 04/05/1990 | DE3833622A1 Valve arrangement for the time-controlled, selective supply of control members, such as, for example, couplings of a power shift transmission, with controlled system pressure |
| 04/04/1990 | EP0361849A2 Apparatus for controlling clutches |
| 04/04/1990 | EP0361279A1 Transfer device of four-wheel-drive vehicle |
| 04/03/1990 | US4913269 Method for smoothing skip up-shifts in automatic/semi-automatic mechanical transmission system |
| 04/03/1990 | CA1267371A1 Combination range and master clutch assembly |
| 03/27/1990 | US4911275 System for controlling a clutch for a vehicle |
| 03/20/1990 | US4909371 Four wheel driving power |
| 03/20/1990 | CA1266904A1 Clutch protection system |
| 03/13/1990 | US4907684 Ball drain valve for the piston space of a rotary multi-disc clutch |
| 03/08/1990 | DE3921019A1 Regulating four-wheel drive of motor vehicle - by periodically calculating signal related to pertaining travel speed, cornering speed, acceleration and slip |
| 03/07/1990 | EP0356527A1 Clutch switching circuit of nonstage transmission |
| 03/06/1990 | US4905801 Control system for a clutch for a motor vehicle |
| 03/01/1990 | DE3828128A1 Anordnung zur ueberwachung einer reibungskupplung Arrangement for a friction clutch ueberwachung |
| 02/28/1990 | EP0356285A1 Pneumatic clutch control device |
| 02/27/1990 | US4903811 Transfer device for a four-wheel drive motor vehicle |
| 02/27/1990 | US4903804 Clutch, particularly for an automotive vehicle |
| 02/27/1990 | US4903547 Activation apparatus for a differential pawl with an actuator |
| 02/22/1990 | WO1990001431A1 Process and device for controlling a clutch |
| 02/14/1990 | EP0354268A1 Hydropneumatic booster for motor vehicles |
| 02/13/1990 | US4899858 Method and control system for updating of control parameter value indicative of master clutch point of incipient engagement |
| 02/13/1990 | US4899785 Proportional pressure reducing valve |
| 02/06/1990 | US4899279 Method for controlling AMT system including wheel lock-up detection and tolerance |
| 02/06/1990 | US4898049 Electro-hydraulic control for reducing engagement shock in an automatic transmission |
| 02/01/1990 | DE3924632A1 Controlling clutch between engine and gearbox of vehicle - using clutch as bridging coupling of hydrodynamic unit or separation coupling and units detecting engine and drive RPM |
| 01/31/1990 | EP0352661A1 Safety device for automatically locking a vehicle clutch pedal in the clutch disengagement position |
| 01/31/1990 | EP0352277A1 Device for controlling an automatic motor vehicle clutch. |
| 01/30/1990 | CA1265021A1 Hydraulic circuit construction for power shift transmission |