| Patents for F16D 48 - External control of clutches (10,172) |
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| 01/23/1990 | US4895236 Actuator for the frictional engaging device |
| 01/17/1990 | EP0351095A2 Accumulator control for hydraulic actuating pressure of automatic transmission friction clutch or brake |
| 01/11/1990 | DE3823387A1 Anordnung zur steuerung einer automatisch betaetigten kraftfahrzeug-reibungskupplung im rangierbetrieb Arrangement for controlling an automatically operated motor vehicle-friction clutch in shunting |
| 01/03/1990 | EP0348732A2 Rotational-speed synchronisation method |
| 01/03/1990 | EP0195790B1 Clutch protection system |
| 01/02/1990 | USRE33140 Methods and apparatus for controlling the engagement of gap-type electromagnetic couplings |
| 01/02/1990 | US4890686 Drive mode selecting system for four-wheel-drive motor vehicle |
| 01/02/1990 | US4890636 Fluid pressure control for use in transmission |
| 12/27/1989 | EP0348270A1 Circuit for controlling, regulating and monitoring a fluid-flow |
| 12/26/1989 | US4889217 Motor vehicle clutch for a mechanical, multiple-speed automatic transmission |
| 12/21/1989 | DE3918254A1 Method for preventing load cycle shocks |
| 12/20/1989 | EP0233190B1 Fuel injection nozzle for internal combustion engines |
| 12/20/1989 | CN1006149B Clutch control system and clutch assembly using same |
| 12/14/1989 | DE3918612A1 Verfahren zur regelung des uebergangs von zweirad- auf vierradantrieb bei einem fahrzeug Method for control of transition from two-wheel to four-wheel drive vehicle at a |
| 12/12/1989 | CA1263891A1 Control system for controlling transmission fluid pressure |
| 11/30/1989 | DE3829312A1 Operating arrangement for hydraulic clutches, especially for marine reversing transmissions |
| 11/29/1989 | EP0344039A1 Pneumatic auxiliary device for clutch control |
| 11/28/1989 | US4883084 Pressure fluid control system |
| 11/23/1989 | EP0343127A2 An electromechanical servocontrol device to engage and disengage the clutch of a motor vehicle speed gear |
| 11/21/1989 | CA1263088A1 Automatic differential locking system |
| 11/16/1989 | WO1989011045A1 Clutch oil pressure controller of transmission |
| 11/14/1989 | US4880094 Control system for a clutch for a vehicle |
| 11/09/1989 | DE3828707A1 Drive arrangement for at least one auxiliary unit arranged on an internal combustion engine |
| 11/08/1989 | EP0176529B1 Clutch engagement control system |
| 11/02/1989 | WO1989010494A1 Arrangement for controlling a hydraulically operated friction disc clutch with diaphragm spring |
| 11/02/1989 | WO1989010282A1 Power line to drive a vehicle |
| 11/02/1989 | DE3912349A1 Antriebskraft-verteilersteuervorrichtung fuer kraftfahrzeuge Driving force distributor control device for motor vehicles |
| 10/26/1989 | DE3812060A1 Drive for a motor vehicle |
| 10/25/1989 | EP0339014A2 Differential gearing |
| 10/24/1989 | US4875561 Dual clutch application area and control |
| 10/17/1989 | US4874059 Control device for differential limiting mechanisms of four-wheel drive car |
| 10/12/1989 | DE3810013A1 Method and device for applying pressure to actuators on gearshift elements of a vehicle transmission |
| 10/11/1989 | EP0336055A1 System controlling power transmission to at least two axles of a motor vehicle |
| 10/10/1989 | US4872525 Drive system for a motor vehicle comprising means for permanently driving a first pair of wheels and automatically operable means for selectively driving a second pair of wheels |
| 10/10/1989 | US4872373 Differential control device |
| 10/10/1989 | US4872372 Controller for lockable differential transmission |
| 10/05/1989 | DE3908152A1 Vorder- und hinterradantriebsvorrichtung fuer kraftfahrzeuge Front and rear wheel drive device for motor vehicles |
| 10/04/1989 | EP0335782A1 Clutch, especially for motor vehicle |
| 10/03/1989 | US4871051 Clutch booster control valve system |
| 09/28/1989 | DE3907993A1 Ball-type emptying valve for the piston space of a rotating multi-disc clutch |
| 09/26/1989 | CA1260855A1 Automatic clutch control system having latch member |
| 09/26/1989 | CA1259972A1 Fluid compressor with rotational speed detecting device |
| 09/21/1989 | WO1989008786A1 Power hydraulic system |
| 09/19/1989 | US4867291 Vehicle transmission hill holder with releasable one way clutch |
| 09/19/1989 | US4867287 Control method for magnetic powder clutch |
| 09/12/1989 | US4866625 Four-wheel drive vehicle having antislip apparatus |
| 09/12/1989 | US4865176 Modulating inching valve with automatic pressure control |
| 09/08/1989 | WO1989008208A1 Modulating inching valve with automatic pressure control |
| 09/06/1989 | EP0331522A2 Apparatus for and method of controlling hydraulic clutch operation in an automatic transmission |
| 09/05/1989 | US4862769 Multiple disc clutch apparatus |
| 08/30/1989 | EP0247049B1 Start-up and shifting clutch mechanism |
| 08/29/1989 | US4860873 Lubricating system for friction engaging means in transmission |
| 08/29/1989 | US4860868 Air pressure control valve of an air clutch |
| 08/29/1989 | US4860863 Method and apparatus for controlling a clutch of a vehicle |
| 08/24/1989 | WO1989007723A1 Clutch switching circuit of nonstage transmission |
| 08/24/1989 | WO1989007541A1 Hydraulic master cylinder |
| 08/24/1989 | WO1989007540A1 Hydraulic cylinder assembly |
| 08/23/1989 | EP0329408A2 Transfer device for a four-wheel drive motor vehicle |
| 08/23/1989 | EP0329407A1 A control system for a clutch for a motor vehicle |
| 08/22/1989 | US4860208 Arrangement for the control of the power transmission of a four-wheel drive vehicle |
| 08/17/1989 | DE3902809A1 Vehicle with a driven steered axle |
| 08/15/1989 | US4858131 Clutch target position control system |
| 08/15/1989 | US4856628 Automated mechanical transmission system for use in commercial vehicles |
| 08/15/1989 | US4856380 Method of controlling clutch pressure of continuously variable transmission system |
| 08/10/1989 | WO1989007058A1 Vehicle with driven steering axle |
| 08/09/1989 | EP0327350A1 Method for smoothing skip upshifts in automatic/semi-automatic mechanical transmission system |
| 08/09/1989 | EP0326564A1 Method for controlling automatic motor vehicle clutches. |
| 08/09/1989 | EP0230413B1 Control system for independent control of fluid actuated devices |
| 08/08/1989 | US4855913 Electronic control system for powershift transmission |
| 08/08/1989 | US4854433 Automatic clutch actuation system with program control using plural function generators |
| 08/08/1989 | US4854220 Pull-type booster |
| 07/26/1989 | EP0324928A2 Continously variable transmission control |
| 07/25/1989 | US4850447 Power transmission apparatus for a vehicle |
| 07/20/1989 | DE3800607A1 Clutch |
| 07/19/1989 | EP0324553A1 Clutch actuator system for automatic/semi-automatic mechanical transmission system |
| 07/18/1989 | US4848544 Control system for a clutch for a vehicle |
| 07/18/1989 | US4848531 Electronic system for monitoring clutch brake engagement and clutch slippage |
| 07/18/1989 | US4848530 Transmission control providing sequentially engaged high and low speed clutches |
| 07/18/1989 | US4848528 Control system for an electromagnetic clutch for a vehicle |
| 07/18/1989 | US4848527 Inertial brake unit for air clutch |
| 07/11/1989 | US4846321 Control system for a clutch for a vehicle |
| 07/11/1989 | US4846298 Driving force distribution control system for 4WD vehicle |
| 07/11/1989 | CA1257107A1 Control system for a four-speed automatic transmission |
| 07/04/1989 | US4844221 Control system of a selector mechanism for a continuously variable transmission |
| 07/04/1989 | US4843917 Accumulator control for hydraulic actuating pressure of automatic transmission friction clutch or brake |
| 06/29/1989 | DE3743259A1 Remote-controlled gear shift, program-controlled for a tractor transmission with electro-pneumatic control |
| 06/27/1989 | US4842115 Hydraulic clutch |
| 06/27/1989 | US4842113 System for controlling the free-wheeling release operation of a motor vehicle clutch |
| 06/27/1989 | US4841808 Differential control device |
| 06/20/1989 | US4840263 Hydraulic control device for 4WD torque distribution clutch providing stabilized pressure characteristics |
| 06/20/1989 | US4840261 Automatic transmission having centrifugally operable drain valve in hydraulically operated clutch actuator |
| 06/20/1989 | CA1255925A1 Power take-off speed control assembly |
| 06/15/1989 | WO1989005247A1 Device for electrohydraulic actuator of a clutch which locks the transfer differential of a vehicle |
| 06/14/1989 | EP0320261A1 Automatic clutch control apparatus |
| 06/13/1989 | US4838397 Apparatus for controlling vehicle having an automatic transmission system |
| 06/08/1989 | DE3839318A1 Hydraulic clutch-actuation device |
| 06/07/1989 | EP0318688A1 Limited-slip differential control system |
| 06/06/1989 | US4836057 Method of controlling speed change clutches in a transmission |
| 05/30/1989 | US4834226 Control system for an electromagnetic clutch for a vehicle |
| 05/24/1989 | EP0317186A2 Engine cooling fan |