| Patents for F16D 48 - External control of clutches (10,172) |
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| 05/21/1991 | US5016739 Friction clutch system |
| 05/16/1991 | DE4033821A1 Automatic control for four wheel drive - has wheel speed sensors and servo operated clutches |
| 05/15/1991 | EP0426745A1 Process and device for controlling a clutch. |
| 05/15/1991 | EP0368922B1 Servo-assisted gear selector |
| 05/14/1991 | US5014832 Clutch control system |
| 05/14/1991 | US5014809 Driving torque distribution control system for 4WD vehicle |
| 05/11/1991 | WO1991007293A1 Automatic clutch control |
| 05/10/1991 | CA2003894A1 Automatic clutch control |
| 05/07/1991 | US5012909 Change-speed control construction |
| 05/02/1991 | DE3935439A1 Vehicular friction clutch automatic actuator for smooth starting - includes set-point generator modifying desired value of engine speed in nonlinear relationship to throttle opening |
| 05/02/1991 | DE3935438A1 Vehicular friction clutch actuator dependent on speed difference - includes controller for linear redn. of desired value of difference between engine and prim. gear speeds |
| 04/30/1991 | US5010989 Clutch control for high-response continuously variable transmission |
| 04/30/1991 | US5010974 4WD vehicle with driving force distribution control |
| 04/24/1991 | EP0423799A2 Apparatus for controlling vehicle semi-automatic transmission, incorporating means for inhibiting automatic clutch from being fully released to avoid engine racing |
| 04/17/1991 | EP0423037A1 Servo control device |
| 04/16/1991 | US5007512 Technique for clutch control in continuously variable transmission systems |
| 04/10/1991 | EP0421183A2 Continuous speed variable transmission control apparatus |
| 04/10/1991 | EP0421142A2 Method of controlling rotational speed of continuous variable transmission |
| 04/10/1991 | EP0421141A2 Clutch cooling apparatus for stepless variable speed transmission |
| 04/03/1991 | EP0420154A2 Clutch control system |
| 04/02/1991 | US5005131 Slip control device for differential |
| 04/02/1991 | US5004086 Clutch assembly for a motor vehicle |
| 04/02/1991 | US5004084 Closed loop control of a hydraulically controlled clutch |
| 03/26/1991 | US5002170 Torque responsive clutch control |
| 03/26/1991 | US5002166 Dual mode motor vehicle clutch control system |
| 03/26/1991 | US5002091 Proportional pressure reducing valve |
| 03/20/1991 | EP0417909A2 Control method and apparatus for continuously variable transmissions |
| 03/16/1991 | CA2021399A1 Control method and apparatus for continuously variable transmissions |
| 03/12/1991 | US4998609 Damper for hydraulic clutch actuator |
| 03/07/1991 | WO1991002913A1 Pressure control device |
| 03/06/1991 | EP0415654A2 System for controlling distribution of torque to left and right wheels of a motor vehicle |
| 03/06/1991 | EP0415619A2 System for controlling distribution of torque to left and right wheels of a motor vehicle |
| 03/06/1991 | EP0415523A2 Continuously variable transmission with a clutch control system |
| 03/05/1991 | CA1281101C System for controlling the clutch torque of an electromagnetic clutch for vehicles |
| 02/28/1991 | DE4026658A1 Pressure control for load breaking couplings - has regulating valve with shock absorber and pre tensioning piston arrangement |
| 02/28/1991 | CA2019796A1 Technique for clutch control in continuously variable transmission systems |
| 02/27/1991 | EP0326564B1 Method for controlling automatic motor vehicle clutches |
| 02/26/1991 | CA1280815C Clutch control system and clutch assembly using same |
| 02/14/1991 | DE3926236A1 Vehicular friction clutch control - uses alternative function generators for clutch operation at threshold of output shaft speed |
| 02/13/1991 | EP0412758A2 Hydraulic control apparatus for belt-and-pulley type continuously variable transmission, incorporating fail-safe protective means |
| 02/13/1991 | EP0412711A1 Apparatus for controlling hydraulically operated clutch in vehicle transmission system, including two valves for engaging and disengaging the clutch |
| 02/06/1991 | EP0411307A1 Clutch control system for motor vehicles |
| 02/06/1991 | EP0411010A1 Arrangement for controlling a hydraulically operated friction disc clutch with diaphragm spring. |
| 02/05/1991 | US4989471 Method of calibrating clutches in transmissions |
| 01/31/1991 | DE4020579A1 Press with timing adjustment for workpiece ejection |
| 01/30/1991 | EP0410441A2 Differential gear locking device for motor vehicles |
| 01/30/1991 | EP0410346A1 Clutch control unit |
| 01/29/1991 | US4987983 Dual-mode powered clutch actuator |
| 01/23/1991 | EP0408899A1 Traction-control system |
| 01/22/1991 | US4986404 Hydraulic clutch releasing means |
| 01/22/1991 | US4986401 Device for controlling an automatic motor-vehicle clutch |
| 01/22/1991 | US4986388 Driving force distribution control system for 4wd vehicle |
| 01/22/1991 | CA1279232C Transmission control with a clutch priority valve |
| 01/17/1991 | DE4020241A1 Hydraulically activated lamellar coupling - balancing system to compensate for pressure variations |
| 01/17/1991 | DE3922215A1 Hydraulic operated clutch mechanism - incorporates servo-booster and throttle to reduce kick-back at pedal |
| 01/15/1991 | US4984649 Motor vehicle with an automatic limited-slip differential |
| 01/09/1991 | EP0406262A1 Hydraulic master cylinder |
| 01/08/1991 | US4982826 Bleeder ball check valves in an automatic transmission |
| 01/05/1991 | WO1991000441A1 Electrohydraulic device for controlling the engagement of the clutch in motor vehicles and the like |
| 01/05/1991 | CA2064003A1 Electrohydraulic device for controlling the engagement of the clutch in motor vehicles and the like |
| 01/03/1991 | CA2019838A1 Front wheel drive clutch control system |
| 01/01/1991 | US4981202 Motor vehicle control system |
| 01/01/1991 | US4981190 Torque distribution control system for a four wheel drive vehicle |
| 12/27/1990 | WO1990015729A1 Gear change control of construction machine |
| 12/25/1990 | US4979931 Differential gear and control system for motor vehicles having a single driven axle and at least one undriven axle |
| 12/25/1990 | US4979599 Work vehicle |
| 12/25/1990 | US4979366 Method of providing modular prefilled hydraulic control apparatus |
| 12/18/1990 | US4977988 Control system for a clutch for a vehicle |
| 12/12/1990 | EP0401337A1 Control device for the automatic actuation of vehicle clutches |
| 12/05/1990 | EP0401095A1 Process and apparatus for the control of a differential gear, especially for a motor vehicle |
| 11/29/1990 | WO1990014526A1 Closed loop control of a hydraulically controlled clutch |
| 11/28/1990 | EP0399399A1 Actuator device particularly suited to activating the friction clutch of a motor vehicle |
| 11/27/1990 | US4973296 Apparatus for driving a pair of motor vehicle road wheels |
| 11/27/1990 | US4973294 Limited-slip differential control system |
| 11/27/1990 | CA1277011C Electronic control system for powershift transmission |
| 11/22/1990 | EP0397990A1 Central device for the supply of lubricating resp. cooling oil to a hydraulically controlled lamellar friction clutch for vehicles |
| 11/22/1990 | DE4015287A1 Power operated clutch and gear-changing device |
| 11/22/1990 | DE4015286A1 Signalling device for operation of vehicular clutch pedal - has adjustable spring in electromagnet-operated cylinder providing tactile feedback through fluid pressure circuit to driver |
| 11/20/1990 | US4971183 Device for the automatic actuation of a friction clutch |
| 11/20/1990 | CA1276706C Method for controlling amt system including wheel lock-up detection and tolerance |
| 11/15/1990 | WO1990013756A1 Soft start coupling |
| 11/15/1990 | DE4013299A1 Vehicle coupling automatic actuation arrangement - contains elastic element in lever force transfer path whose deflection corresp. to manually applied force |
| 11/14/1990 | EP0397328A2 Vehicle traction control apparatus & method |
| 11/13/1990 | US4969546 Fluid operated clutch with a directional torque control |
| 11/13/1990 | US4969545 Apparatus and control method for a magnetic powder clutch |
| 11/08/1990 | DE3914633A1 Tractor transmission with proportional valve - has system for setting degree of travel of single pedal |
| 11/06/1990 | US4967887 Soft start coupling |
| 11/06/1990 | US4967884 For use in a motor vehicle |
| 11/06/1990 | US4967644 Clutch control pneumatic boost device |
| 10/31/1990 | EP0395304A1 Transmission system including a differential in a motor vehicle |
| 10/31/1990 | EP0352277B1 Device for controlling an automatic motor vehicle clutch |
| 10/30/1990 | US4967385 Electronic control system for powershift transmission |
| 10/24/1990 | EP0393910A2 Transmission for vehicle |
| 10/23/1990 | US4965730 Vehicle-running control system |
| 10/23/1990 | US4964317 Hydraulic control method for continuously variable speed change gear mechanism for a vehicle and a drive control method for a pressure valve thereof |
| 10/18/1990 | WO1990012217A1 Clutch actuating hydraulic circuit |
| 10/18/1990 | DE4011850A1 Automatically clutch of motor vehicle - using processor program for engagement following automatic determination of clutch biting point |
| 10/17/1990 | EP0392762A2 Method for correcting data used for a clutch control operation |
| 10/17/1990 | CN1009998B Automatic clutch control system having latch member |
| 10/16/1990 | US4962678 Hydraulic control method for continuously variable speed change gear mechanism for a vehicle and a drive control method for a pressure valve thereof |