| Patents for F16D 35 - Fluid clutches in which the clutching is predominantly obtained by fluid adhesion (1,861) |
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| 03/04/1992 | EP0472757A1 Viscous coupling |
| 02/26/1992 | EP0372047B1 Fluid friction coupling for automatic engagement and disengagement of torque transmission |
| 02/25/1992 | US5090534 Spacing ring for spacing the plates of a viscous coupling |
| 02/25/1992 | US5090533 Temperature-sensing type fluid fan coupling device |
| 02/25/1992 | US5090521 One-way damper |
| 02/13/1992 | DE4016802C1 Vehicle fluid drive coupling - has switch with weight speed connected to drive section |
| 02/12/1992 | EP0470879A1 Differential transmission device and coupling, especially for motor vehicle |
| 02/11/1992 | US5086893 Viscous coupling by-pass element for a torque converter and improved bushing design |
| 02/11/1992 | US5086867 Power transmission apparatus |
| 02/06/1992 | DE4125396A1 Temp.-controlled fluid friction clutch - has axially movable partition altering shear surface gap width to control fan speed |
| 02/06/1992 | DE4124894A1 Friction clutch element for four-wheel-drive motor vehicle - incorporates subsidiary clutch operative within wider range with main clutch spring-biassed into high torque region |
| 01/28/1992 | US5083986 Coupling apparatus with double clutches |
| 01/14/1992 | US5080211 Viscous coupling having plates with index recesses |
| 01/14/1992 | US5080210 Viscous coupling |
| 01/14/1992 | US5080187 Driving power transmission system for vehicle |
| 12/27/1991 | EP0462628A2 Pressure modulating valve |
| 12/10/1991 | US5070981 Fluid coupling |
| 12/10/1991 | US5070980 Viscous fluid coupling |
| 12/10/1991 | US5070979 Viscous coupled fly wheel |
| 12/10/1991 | US5070975 Viscous clutch assembly for torque transmission in motor vehicle |
| 11/19/1991 | US5065836 Four-wheel drive motor vehicle having a controlled differential device |
| 11/13/1991 | EP0456563A1 Differential transmission device with a controlled slipping coupling |
| 11/12/1991 | US5063738 Pressure generation and responsive mechanism with high viscous fluid |
| 11/05/1991 | US5062514 Insulating retainer for a viscous fluid clutch |
| 10/29/1991 | US5060775 Fluid friction coupling |
| 10/29/1991 | US5060774 Temperature-controlled fan fluid coupling |
| 10/17/1991 | DE4011528A1 Viscous clutch for automobile engine cooling fan - uses electromagnetic valves as clutch control elements in hydraulic circuit |
| 10/17/1991 | DE4010678A1 Coupling with variable torque according to rotation direction - has split coupling hub with fixed and freely rotating sections connected via sliding sleeve |
| 10/15/1991 | US5056640 Torque transmission device for a four-wheel drive vehicle |
| 10/09/1991 | EP0450824A1 Electroactive fluid torque transmission apparatus with ferrofluid seal |
| 10/08/1991 | US5054596 Spacing means for spacing plates in a fluid friction coupling |
| 10/08/1991 | CA1290256C Four-wheel drive vehicle |
| 10/02/1991 | DE4010195A1 Viscous coupling with transverse wall in housing - has throttling device in wall to control rate of flow of viscous fluid |
| 09/24/1991 | CA1289431C Clutch for a cooling fan of a motor vehicle and method of making the same |
| 09/03/1991 | US5044480 Fluid friction coupling |
| 08/28/1991 | EP0379498B1 Thermostatted hydraulic fan clutch |
| 08/27/1991 | US5042629 Viscous fluid shear clutches and control valves therefor |
| 08/20/1991 | US5041069 Drive assembly for a motor vehicle |
| 08/20/1991 | US5041065 Viscous shear couplings and plates therefor |
| 08/14/1991 | DE4104261A1 Drive arrangement for four-wheel drive vehicle - makes use of pair of viscous couplings and freewheel unit |
| 08/07/1991 | EP0439859A1 Pressure-responsive fluid-check valve and method for a viscous fluid clutch |
| 08/06/1991 | US5036963 Viscous clutch assembly for torque transmission in motor vehicle |
| 08/01/1991 | DE4002481A1 Drive for motor vehicle - has centrifugal force control with cut=out in freewheel inner section housing pivoting contact arms with eccentric fulcrum |
| 07/17/1991 | EP0436850A1 Fluid friction clutch with inner bimetallic element |
| 07/16/1991 | US5031743 Driving power transmission |
| 07/11/1991 | DE4019885C1 Fluid friction clutch externally heated to maintain viscosity - has heating wire(s) in housing to counteract low ambient temp. |
| 07/09/1991 | US5030865 Self powered remote viscous fluid coupling |
| 06/30/1991 | CA2030665A1 Pressure-responsive fluid check valve and method for a viscous fluid clutch |
| 06/25/1991 | US5025906 Remote sensing viscous fluid coupling |
| 06/20/1991 | DE3941834A1 Friction type fluid coupling - has solenoid coil outside vee-belt pulley and adjacent to valve body |
| 06/20/1991 | DE3941611A1 Vehicle fan fluid coupling - has locking eccentrics in housing pressing against shaft to connect drive |
| 06/20/1991 | DE3941610A1 Fluid friction coupling for fan cooler in vehicle - has electromagnet coil acting on curved magnetic projection on pivoted sprung arm opening and closing fluid hole |
| 06/11/1991 | US5022507 Anti-flowback check valve for a viscous fluid clutch |
| 06/04/1991 | US5021038 Differential unit |
| 05/29/1991 | CN2077929U Silicon oil fan clutch with oil scraping teeth |
| 05/28/1991 | US5018612 Temperature-controlled fan fluid coupling |
| 05/21/1991 | US5016742 Liquid friction coupling |
| 05/14/1991 | US5014836 Fan drive clutch for internal combustion engine |
| 05/08/1991 | EP0426318A2 Automotive fan drive train assembly |
| 05/01/1991 | CA2025166A1 Automotive fan drive train assembly having a hydraulic coupler and a viscous clutch |
| 04/16/1991 | US5007885 Driving torque transmitting device |
| 04/16/1991 | US5007515 Viscous coupling apparatus |
| 04/16/1991 | US5007513 Electroactive fluid torque transmission apparatus with ferrofluid seal |
| 04/16/1991 | US5007498 Driving assembly |
| 04/09/1991 | US5005685 Torque transmitting device |
| 04/03/1991 | EP0420601A1 Free floating dam for a fluid shear coupling apparatus |
| 04/02/1991 | US5004085 Fluid friction coupling with closing slide |
| 04/02/1991 | US5003685 Method of making a clutch for a cooling fan of a motor vehicle |
| 04/02/1991 | CA1282262C Four wheel drive transmission device |
| 03/20/1991 | EP0417467A1 Fluid coupling device and improved valving therefor |
| 03/12/1991 | US4998607 Fluid coupling having damped bimetallic spring |
| 02/26/1991 | US4995494 Pressure-responsive fluid check valve and method for viscous fluid clutch |
| 02/19/1991 | US4993377 Automobile heating apparatus and heat generator for the same |
| 02/13/1991 | EP0412665A1 Viscous clutch assembly for torque transmission in motor vehicle |
| 02/05/1991 | US4989687 Viscous shear couplings |
| 02/05/1991 | US4989476 Torque transmitting device |
| 01/29/1991 | US4987986 Electromagnetically actuated valve plate for a viscous fluid fan clutch |
| 01/29/1991 | US4987985 Automotive fan drive train assembly having a hydraulic coupler and a viscous clutch |
| 01/23/1991 | EP0409610A1 Coupling apparatus |
| 01/16/1991 | EP0407750A1 Liquid friction coupling |
| 01/16/1991 | EP0407749A1 Liquid friction coupling |
| 01/08/1991 | US4983150 Differential gear apparatus with differential limitation mechanism |
| 01/08/1991 | US4982808 Viscous shear coupling |
| 01/01/1991 | US4981192 Power transmission apparatus |
| 12/25/1990 | US4979601 Viscous fluid coupling with reduced scatter |
| 12/18/1990 | US4977990 Free floating dam for a fluid shear coupling apparatus |
| 12/04/1990 | US4974713 Fluid friction clutch |
| 12/04/1990 | US4974712 Fluid coupling device and improved valving therefor |
| 11/29/1990 | DE4013218A1 Quick pump-out clutch plate for viscous fluid clutch |
| 11/27/1990 | US4972931 Viscous coupling |
| 11/22/1990 | EP0397790A1 Torque transmitting device. |
| 11/22/1990 | CA2010795A1 Electromagnetic control assembly and method for a viscous fluid fan clutch |
| 11/22/1990 | CA2010793A1 Quick pump-out clutch plate for a viscous fluid clutch |
| 11/14/1990 | CN2065697U Silicon oil clutch for electric fan |
| 11/13/1990 | US4969920 Internal airflow check valve and method for a viscous fluid clutch |
| 11/07/1990 | EP0396531A1 Fluid friction clutch |
| 11/06/1990 | US4967889 Fluid friction clutch |
| 10/31/1990 | EP0395453A2 Electrode for electroviscous fluid |
| 10/31/1990 | EP0395007A2 Electroviscous fluid clutch |
| 10/30/1990 | US4966268 Driving power transmission device |