| Patents for F16D 31 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution (2,451) |
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| 12/23/1998 | CN2301570Y 离合器 Clutch |
| 10/27/1998 | US5827145 Hydraulic coupling having supplemental actuation |
| 09/24/1998 | WO1998041783A1 Hydraulic coupling having supplemental actuation |
| 09/23/1998 | EP0865582A1 A coupling device |
| 09/01/1998 | US5800130 Pressure control system for a variable displacement hydraulic pump |
| 06/30/1998 | US5771693 Gas compressor |
| 06/25/1998 | WO1998027337A1 Pressure control system for a variable displacement hydraulic pump |
| 06/17/1998 | EP0765443A4 Pressure activated rotary clutch |
| 05/13/1998 | EP0841498A1 Power transmission device |
| 05/06/1998 | EP0840048A1 Electric Valve Assembly and Method of making same |
| 04/30/1998 | DE19747620A1 Tandem pump device for preventing cavitation |
| 04/30/1998 | CA2217786A1 Electric valve assembly and method of making same |
| 04/28/1998 | US5743090 Hydraulic torque transmitter and synchronizer |
| 02/18/1998 | CN1173915A Power transmission device |
| 02/11/1998 | CN1037368C Hydraulic slider coupling |
| 01/22/1998 | DE19628742A1 Controlled operation of cooling fan for motor vehicle engine |
| 01/13/1998 | US5706658 Rotary shaft coupler with rotary valve plate position dependent on direction of shaft rotation |
| 01/06/1998 | US5704459 Positive displacement coupling device |
| 10/21/1997 | CA2102611C Hydraulic slider coupling |
| 10/16/1997 | WO1997038234A1 Hydrostatic coupling comprising a planetary gear pump |
| 10/16/1997 | CA2250476A1 Hydrostatic coupling comprising a planetary gear pump |
| 10/01/1997 | EP0798479A2 Clutch device |
| 09/17/1997 | EP0794851A2 Motor driven hydraulic tool |
| 09/12/1997 | WO1997033098A1 Hydromechanical clutch/variator device |
| 08/13/1997 | EP0708894B1 Volumetric coupling device |
| 06/12/1997 | WO1997021044A1 A coupling device |
| 04/29/1997 | US5624015 Infinitely variable positive gear ratio transmission |
| 04/02/1997 | EP0765443A1 Pressure activated rotary clutch |
| 03/12/1997 | EP0583336B1 Hydraulic slider coupling |
| 03/05/1997 | CN1144308A Static-pressure controlled clutch |
| 02/04/1997 | US5598911 Hydraulic slider coupling |
| 11/19/1996 | US5575368 Fluid clutch |
| 10/09/1996 | EP0647295B1 Ratio change control method and related gear transmission device, in particular for a vehicle |
| 10/08/1996 | US5562560 Speed reducing apparatus having wobbling rotation plate |
| 09/26/1996 | DE19510778A1 Speed regulator for road vehicle |
| 09/11/1996 | CN2235045Y Hydraulic coupling |
| 08/28/1996 | CN1129970A Volumetric coupling device |
| 08/15/1996 | WO1996024783A1 Power transmission device |
| 08/15/1996 | CA2211035A1 Power transmission device |
| 07/16/1996 | US5536215 Hydraulic coupling for vehicle drivetrain |
| 07/04/1996 | WO1996009142A3 Portable tool with variable displacement hydraulic pump |
| 05/21/1996 | US5518095 Coupling for transmitting torque |
| 05/07/1996 | US5514043 Ratio change control method and related gear transmission device, in particular for a vehicle |
| 05/01/1996 | EP0708894A1 Volumetric coupling device |
| 03/28/1996 | WO1996009142A2 Portable tool with variable displacement hydraulic pump |
| 03/28/1996 | CA2198609A1 Portable tool with variable displacement hydraulic pump |
| 03/20/1996 | CN2222829Y Counter regulation type liquid viscosity speed-regulating clutch |
| 03/13/1996 | EP0682754A4 Vehicle drivetrain hydraulic coupling. |
| 03/05/1996 | US5495926 Hydraulic power transmission apparatus |
| 02/07/1996 | CN1116276A Hydraulic pumping unit |
| 01/30/1996 | US5487457 Pressure activated rotary clutch |
| 12/28/1995 | WO1995035453A1 Pressure activated rotary clutch |
| 12/26/1995 | US5477680 Motor driven hydraulic tool with variable displacement hydraulic pump |
| 12/20/1995 | CN2215627Y Hydraulic clutch |
| 11/30/1995 | WO1995032368A1 Hydraulic power transmission apparatus |
| 11/22/1995 | EP0682754A1 Vehicle drivetrain hydraulic coupling |
| 10/19/1995 | DE4413033A1 Switchable hydrostatic clutch for transmitting torque between two shafts |
| 10/10/1995 | US5456642 Geared traction unit |
| 10/04/1995 | CN1109423A Vehicle drivertrain hydraulic coupling |
| 09/08/1995 | WO1995023931A1 Hydraulic coupling for vehicle drivetrain |
| 07/12/1995 | CN1105103A 气体压缩机 Gas compressor |
| 07/04/1995 | US5429553 Hydraulic torque impulse generator |
| 06/20/1995 | US5425238 Hydraulic nonstep transmission apparatus |
| 04/12/1995 | EP0647295A1 Ratio change control method and related gear transmission device, in particular for a vehicle. |
| 04/12/1995 | EP0647291A1 A gas compressor |
| 04/06/1995 | DE4434324A1 Drive unit for auxiliaries of motor vehicles, and driving of auxiliaries by shafts at different speeds |
| 03/30/1995 | DE4432492A1 Transmission of torques |
| 03/30/1995 | DE4327892C1 Coupling for the transmission of torques in a manner dependent on the difference in speed |
| 03/16/1995 | WO1995003498A3 Volumetric coupling device |
| 03/07/1995 | US5396421 Torque distribution control device |
| 02/28/1995 | US5392664 Continuously variable transmission |
| 02/14/1995 | US5388679 Torque transmission device of a four-wheel drive vehicle |
| 02/02/1995 | WO1995003498A2 Volumetric coupling device |
| 02/02/1995 | CA2167606A1 Volumetric coupling device |
| 12/27/1994 | US5375687 Torque transmission device of a four-wheel drive vehicle |
| 10/25/1994 | US5358454 Temperature and pressure compensated geared traction unit |
| 09/29/1994 | WO1994021943A1 Automatic speed shifting method, and device therefor |
| 09/29/1994 | WO1994021942A1 Rotary power transmitting method, and device therefor |
| 09/20/1994 | US5347812 Hydraulic motor assembly |
| 08/03/1994 | CN2173322Y Fluid controllable shaft coupling |
| 06/29/1994 | EP0583336A4 Hydraulic slider coupling |
| 06/01/1994 | EP0599038A1 Rotational speed converter |
| 05/10/1994 | US5310388 Vehicle drivetrain hydraulic coupling |
| 04/19/1994 | US5303797 Torque distribution control device for four-wheel drive vehicle |
| 03/29/1994 | US5297994 Hydraulic power transmission joint which is used in vehicles |
| 03/17/1994 | WO1993024754A3 A gas compressor |
| 03/03/1994 | WO1994004847A1 Continuously variable transmission |
| 02/23/1994 | EP0583336A1 Hydraulic slider coupling. |
| 01/20/1994 | WO1994001696A1 Ratio change control method and related gear transmission device, in particular for a vehicle |
| 01/20/1994 | CA2139415A1 Ratio change control method and related gear transmission device, in particular for a vehicule |
| 12/09/1993 | WO1993024754A2 A gas compressor |
| 12/09/1993 | CA2136716A1 A gas compressor |
| 11/10/1993 | EP0569344A1 Hydraulic torque impulse generator |
| 09/30/1993 | WO1993019310A1 Vehicle drivetrain hydraulic coupling |
| 09/08/1993 | EP0558707A1 Device for hydrostatically regulating the rotation of an output shaft |
| 08/03/1993 | US5232410 Rotational speed differential responsive type control coupling |
| 05/19/1993 | EP0541847A1 Hydro-energy |
| 04/14/1993 | CN1070994A Hydraulic slider coupling |
| 04/06/1993 | US5199539 Fluid coupling having a vane pump system |
| 03/16/1993 | US5194053 Rotational speed differential responsive type control coupling with variable transfer torque control means |