Patents for F16D 48 - External control of clutches (10,172)
09/1988
09/27/1988US4773517 Torque control system for vehicles
09/27/1988US4773500 Driving torque distribution control system for 4WD vehicle
09/22/1988WO1988007145A1 Modulating valve device
09/20/1988US4771658 System for controlling the pressure of oil in a system for a continuously variable transmission
09/14/1988EP0281869A1 Pneumatic device for the automatic coupling operation of motor vehicles
09/14/1988EP0281849A2 Continuously variable transmission clutch control system
09/14/1988CN87106712A Ratio valve to control unloading of modulating relief valve
08/1988
08/30/1988US4766988 Circuit arrangement for controlling the engagement and disengagement of a clutch
08/30/1988US4766985 Power clutch system
08/23/1988US4766544 Apparatus for automatically controlling starting of vehicle powered by internal combustion engine
08/23/1988US4765450 Clutch control apparatus responsive to motor and gearing controls
08/23/1988US4765315 Particle brake clutch muscle exercise and rehabilitation apparatus
08/17/1988CN87102596A Method for controlling amt system including wheel lock-up detection and tolerance
08/09/1988US4762213 Driving system for a four-wheel drive vehicle
08/03/1988EP0277049A1 Method of controlling a motor-actuated clutch
08/02/1988US4760902 Tractor power take-off drive line
07/1988
07/28/1988DE3738799A1 Drive arrangement
07/27/1988EP0276022A2 Control system for a clutch for a vehicle
07/13/1988EP0274080A2 Forward and reverse clutch actuation system for a belt-driven continually variable transmission
07/12/1988US4756335 Ball dump valve
07/12/1988US4756213 Transmission control with a clutch priority valve
07/12/1988US4756159 Prefilling apparatus for modular prefilled hydraulic control apparatus
07/07/1988DE3724785A1 Method for adjusting clutches in machines
07/05/1988US4754835 Control arrangement for four-wheel drive vehicles
07/05/1988US4754666 Power transmission control system
06/1988
06/28/1988US4753332 Friction clutch assembly with selective lubrication during the friction phase
06/28/1988US4753132 Hydraulic servo for friction coupling devices of automatic transmissions
06/28/1988US4753131 Slip-controlled brake system for all-wheel driven road vehicles
06/28/1988CA1238552A1 Electrohydraulic control of a spool valve for energizing a heavy duty automatic transmission clutch
06/23/1988DE3642262A1 Disengageable coupling
06/21/1988US4751866 Ratio valve to control unloading of modulating relief valve
06/16/1988WO1988004242A1 Adaptor for operating the shaft connection of motor vehicles
06/07/1988CA1237631A1 Pressure modulation valve
06/01/1988EP0269611A2 Additional device for a road tractor
06/01/1988EP0227660B1 Operation of a differential lock
05/1988
05/24/1988US4745999 Clutch operating cylinder for a pressure-medium operated clutch
05/18/1988EP0267419A2 Locking device for a differential gearing
05/04/1988EP0266197A2 Continuously variable transmission
05/03/1988US4741407 Method and system for controlling limited-slip differential gear unit for automotive vehicle
04/1988
04/27/1988EP0265277A2 Differential control device
04/27/1988EP0264380A1 Apparatus for preventing engine stall
04/26/1988US4739864 Electromagnetic powder clutch for use in a power transmitting system having an automatically operated constant-mesh transmission
04/21/1988WO1988002827A1 Pressure regulator
04/21/1988DE3634743A1 Druckregeleinrichtung Pressure control device
04/19/1988US4738112 Method and device for controlling brake booster supplementary vacuum pump ensuring good booster vacuum and low pump wear
04/13/1988CN85108837B Apparatus for releasing clutch which connects the motor driving device with the compressor
04/07/1988WO1988002449A1 Ratio valve to control unloading of modulating relief valve
04/07/1988DE3731259A1 Einrichtung zur steuerung einer automatischen kraftfahrzeugkupplung Means for controlling an automatic motor vehicle clutch
04/05/1988US4735114 Control system for vehicle with engine and continuously variable transmission
03/1988
03/24/1988WO1988001951A1 Device for controlling automatic motor vehicle clutches
03/23/1988EP0260451A2 Slip-controlled brake installation for road vehicles with fourwheel drive
03/22/1988US4732248 Method of and apparatus for controlling automatic clutch
03/22/1988US4732246 Automatic transmission apparatus for vehicle
03/22/1988US4731998 Hydraulic system in a working vehicle
03/16/1988EP0260133A1 Control system of a selector mechanism for a continuously variable transmission
03/16/1988EP0259634A2 Clutch actuating system
03/15/1988US4730712 System for controlling a clutch for a motor vehicle
03/15/1988US4730711 Electromagnetic clutch control system for automobiles
03/08/1988US4729462 Automatic clutch control system having latch member
03/08/1988US4729461 Control method for a direct-coupling mechanism in hydraulic power transmission means of an automatic transmission for automotive vehicles
03/08/1988US4729408 Control system for independent control of fluid actuated devices
03/01/1988US4727966 Differential with differential motion limiting mechanism
03/01/1988US4727791 Apparatus for controlling a hydraulic single acting cylinder
03/01/1988CA1233548A1 Method and apparatus for soft rejection of a clutched load
02/1988
02/23/1988USRE32610 Electric actuators
02/23/1988CA1233045A1 System for controlling the transmission ratio of an infinitely variable transmission
02/10/1988EP0255614A2 Clutch device for motorised vehicles, especially agricultural tractors
02/09/1988US4723644 Electromagnetic clutch control system for automobiles
02/09/1988US4723642 Speed change detecting device for controlling a clutch associated with a gearbox
02/02/1988US4722429 Apparatus for controlling a friction clutch
02/02/1988US4722426 To guard against overheating
02/02/1988CA1232345A1 Apparatus and method for controlling electromagnetic clutches and the like
01/1988
01/28/1988DE3624008A1 Clutch inserted into the drive train of a vehicle
01/27/1988EP0254483A2 Solenoid-operated fluid pressure regulator valves
01/27/1988EP0253952A2 Hydraulic control system for a transmission
01/20/1988CN87104170A Automatic clutch control system having latch member
01/19/1988US4720792 Method and apparatus for controlling operation of a throttle
01/14/1988DE3623627A1 Method for operating a friction clutch
01/12/1988US4718525 System for controlling start clutch of automatic transmission
01/12/1988US4718516 Four wheel drive unit
01/12/1988CA1231310A1 Clutch lube control
01/07/1988EP0251733A2 Control system for a clutch for a vehicle
01/07/1988EP0251571A2 Control system for a clutch for a vehicle
01/07/1988EP0251479A1 Control systeem for controlling transmission fluid pressure
01/07/1988DE3721626A1 Motor vehicle with four-wheel drive
01/05/1988US4717002 Universal power assist arrangement for use with a vehicle transmission clutch linkage
12/1987
12/29/1987US4715482 Method and apparatus for controlling an electromagnetic clutch for use on a vehicle
12/23/1987EP0250228A2 Control system for a clutch for a vehicle
12/22/1987US4714145 Speed responsive control for operating vehicle clutch
12/16/1987EP0249460A2 Hydraulic clutch
12/16/1987EP0249120A2 Automatic clutch control system having latch member
12/15/1987US4712658 Method of automatically operating a clutch release bearing according to the speeds of the shafts coupled by an associated clutch
12/09/1987EP0116570B1 Pressure modulating and reducing valve
12/09/1987EP0114817B1 Solenoid operated clutch engagement
12/08/1987US4711329 Hydraulic circuit construction for power shift transmission
12/03/1987WO1987007347A1 Circuitry for triggering the inductance of a pressure regulator
12/02/1987EP0247336A2 Electrohydraulic controlled spool valve
12/02/1987EP0247049A1 Start-up and shifting clutch mechanism.
11/1987
11/26/1987DE3616974A1 Schaltungsanordnung zur ansteuerung der induktivitaet eines druckregelventils Circuit arrangement for controlling the inductance of a pressure regulating valve
11/24/1987US4708229 Double acting clutch