| Patents for F16D 23 - Details of mechanically-actuated clutches not specific for one distinct type; Synchronisation arrangements for clutches (6,775) | 
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| 12/27/1989 | EP0218091B1 Sliding sleeve made of a polymeric material for a clutch release bearing | 
| 12/26/1989 | US4889003 Manual transmission gearset brake for synchronized engagement of a sliding gear | 
| 12/13/1989 | EP0345958A1 Clutch linkage arrangement with pedal depression assisting mechanism | 
| 12/13/1989 | CN1037953A Tube-guide for clutch release bearing of automotive gearbox | 
| 12/07/1989 | DE3917754A1 Power transmission device | 
| 11/29/1989 | EP0343765A2 Spring clutch assembly | 
| 11/28/1989 | US4883638 For clutches, brakes, bearings, molding and sintering a powder | 
| 11/28/1989 | US4883155 Clutch release bearing, in particular for automotive vehicle | 
| 11/28/1989 | US4883154 Self-aligning bearing carrier | 
| 11/23/1989 | EP0342431A1 Clutch release bearing device for a pushed automotive vehicle clutch | 
| 11/21/1989 | US4881629 Clutch release bearing | 
| 11/15/1989 | EP0341873A2 Clutches | 
| 11/15/1989 | CN1037198A Improved friction material configuration | 
| 11/07/1989 | US4878572 Roller bearing cage for clutch release bearing | 
| 11/07/1989 | US4878396 Control mechanism for a mechanical coupling device | 
| 11/07/1989 | US4878282 Method for the production of friction plates, synchronizing blocker rings or similar structures | 
| 11/02/1989 | DE3911793A1 Coupling unit for clutch release bearings, particularly for a motor vehicle | 
| 10/24/1989 | US4875566 Gear synchronizer mechanism | 
| 10/19/1989 | DE3910671A1 Clutch release bearing, particularly for a motor vehicle | 
| 10/19/1989 | DE3811600A1 Clutch, particularly for individual-wheel engagement/disengagement on land tractors, two-wheelers and combination equipment | 
| 10/17/1989 | US4874439 Containing zinc, aluminum, and oxygen | 
| 10/17/1989 | US4874073 Clutch release bearing device | 
| 10/17/1989 | US4873882 Manual transmission and gear rattle damper therefor | 
| 10/11/1989 | EP0336843A1 Guide member with an integrated sealing for clutch release bearing in a motor vehicle gearbox | 
| 10/10/1989 | US4872539 Clutch release bearing for an automobile vehicle and means for the installation thereof | 
| 10/05/1989 | DE3842265A1 Gearbox for motor vehicles | 
| 10/04/1989 | EP0335601A2 Blocked jaw clutch assembly | 
| 10/04/1989 | EP0335600A1 Resilient friction material | 
| 10/04/1989 | EP0334909A1 Multi-step reduction gear for motor vehicles | 
| 10/03/1989 | US4871050 Clutch arrangement | 
| 10/03/1989 | CA1262102A1 Inertia lock type synchronous clutch mechanism | 
| 09/26/1989 | US4869353 Synchronizing clutch assembly | 
| 09/26/1989 | CA1260856A1 Coupling with spline clutch | 
| 09/19/1989 | US4866831 Method of making a support for a synchronizing ring | 
| 09/14/1989 | DE3834555C1 Optionally engageable fluid friction coupling | 
| 09/14/1989 | DE3807117A1 Twin clutch comprising two friction clutches | 
| 09/14/1989 | DE3806642A1 Hydraulically operated clutch | 
| 09/13/1989 | EP0332442A2 Locking fastener | 
| 09/06/1989 | EP0331362A1 Drive engagement delay device | 
| 09/06/1989 | EP0331264A1 Friction clutch for a motor vehicle transmission, and method of manufacturing same | 
| 09/05/1989 | US4863005 Friction clutch | 
| 09/05/1989 | US4863004 Spring clutch assembly | 
| 08/29/1989 | US4860870 Clutch control mechanism | 
| 08/24/1989 | DE3801460C1 Motor-vehicle friction clutch that can be operated by means of a release lever | 
| 08/23/1989 | EP0328910A1 Synchronising arrangement for synchronised transmission | 
| 08/22/1989 | US4858741 Friction clutch for a vehicle | 
| 08/15/1989 | US4857033 Clutch assembly with combined variable and fixed speed pulleys | 
| 08/15/1989 | US4856634 Clutch | 
| 08/08/1989 | US4854437 Radially adjustable clutch release bearing assembly | 
| 08/08/1989 | US4854436 Clutch release bearing | 
| 08/01/1989 | US4852710 Clutch release bearing with bistable spring washer | 
| 08/01/1989 | US4852709 Synchronizing apparatus for a power transmission | 
| 07/27/1989 | DE3842019A1 Clutch release bearing | 
| 07/25/1989 | US4850467 Clutch release sleeve | 
| 07/18/1989 | US4848550 Load transmission lever for pull-type clutch | 
| 07/18/1989 | US4848548 Synchronizing clutch for automotive multiple speed transmission | 
| 07/11/1989 | US4846012 Actuating linkage for a clutch | 
| 07/06/1989 | DE3843348A1 Synchronising ring and an apparatus and method for the production of the said ring | 
| 07/04/1989 | US4844218 Friction material configuration | 
| 06/28/1989 | EP0322265A1 Clutch control device, notably for motor vehicles | 
| 06/28/1989 | EP0321757A1 Inner race of a clutch release mechanism | 
| 06/27/1989 | US4842112 Gear synchronizer for power transmission | 
| 06/22/1989 | DE3840143A1 Clutch release bearing, particularly for motor vehicles | 
| 06/14/1989 | EP0320365A1 Clutch release bearing of the pull type | 
| 06/14/1989 | EP0320364A1 Clutch release bearing of the pull type | 
| 06/14/1989 | EP0320106A1 Synchronizer blocker pin mounting structure | 
| 06/13/1989 | US4838402 Sliding sleeve of a clutch of an automotive vehicle | 
| 06/13/1989 | US4838399 Gear synchronizer for power transmission | 
| 06/08/1989 | DE3740243A1 Actuating device for a friction clutch | 
| 06/07/1989 | EP0319233A1 Synchronizing clutch assembly | 
| 06/06/1989 | US4836348 Synchronizing mechanism for shifting clutches | 
| 06/06/1989 | US4836041 Motor vehicle gearbox with a device for synchronised engagement of reverse | 
| 06/01/1989 | WO1989004926A1 Pull type clutch | 
| 05/23/1989 | US4832166 Friction clutch for motor vehicles | 
| 05/16/1989 | US4830162 Clutch cover and release bearing assembly for clutch | 
| 05/16/1989 | US4830159 Multi-disk synchronizer | 
| 05/16/1989 | US4830158 Gear synchronizer assembly for power transmission | 
| 05/11/1989 | DE3735919A1 Manual shift transmission for vehicles driven by internal combustion engines, especially motor vehicles | 
| 05/09/1989 | US4829221 Method of controlling a motor-driven clutch | 
| 05/09/1989 | US4828093 Device for controlling a coupling mechanism such as a clutch | 
| 05/09/1989 | US4828087 Inertia lock type synchronous clutch mechanism | 
| 04/26/1989 | EP0313036A1 Use of a copper-zinc alloy | 
| 04/25/1989 | US4823631 Transmission synchronizer | 
| 04/20/1989 | WO1989003489A1 Improved clutch release bearing assembly including a double-acting sliding bore sleeve and method of use | 
| 04/18/1989 | US4821858 Release mechanism for a clutch | 
| 04/06/1989 | WO1989002995A1 Multi-step reduction gear for motor vehicles | 
| 04/06/1989 | WO1989002991A1 Side assembled clip for self-aligning bearing | 
| 04/04/1989 | US4817773 Synchronizing mechanism for clutches | 
| 04/04/1989 | US4817772 Shiftable friction clutch | 
| 04/04/1989 | US4817452 Force and throw transformer for actuation linkages | 
| 03/28/1989 | US4815867 Side assembled clip for self-aligning bearing | 
| 03/14/1989 | US4811825 Dog clutch with locking synchronization | 
| 03/08/1989 | EP0305581A1 Synchro ring | 
| 03/07/1989 | US4809835 Releaser snap connection for a pulled-type diaphragm spring clutch | 
| 03/07/1989 | US4809832 Gear synchronizer mechanism | 
| 03/02/1989 | DE3736146C1 Gearbox, particularly for motor vehicles | 
| 02/28/1989 | US4808015 Clutch release bearing assembly including a double-acting sliding bore sleeve | 
| 02/28/1989 | US4807733 Synchronizing mechanism for a gearbox | 
| 02/22/1989 | EP0303606A1 Synchronisation ring. | 
| 02/22/1989 | CN1031272A Slip overrunning type synchronous clutch with friction-cone gear form |