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| Number | Title | Issue Date |
| 8123016 | Hydraulic actuator A pump coupling or hydraulic actuator controlling one or more limited slip couplings of a distribution system for distribution torque between front and rear axles in all wheel drive vehicles and/or distribution of torque between left and right wheels in two or four ... | 02/28/2012 |
| 7165567 | Valve apparatus for compensating centrifugal forces A control valve apparatus for a rotating clutch includes a valve having a spool portion and a mass portion. The spool portion provides a control function to distribute pressure from a static source to a chamber of the clutch. The valve also has a mass associated the... | 01/23/2007 |
| 6367605 | Hydrokinetic torque converter with lockup clutch The housing of a hydrokinetic torque converter in the power train between the engine and the transmission of a motor vehicle contains a lockup valve which can be engaged to transmit torque directly from the output element of the engine to the output membe... | 04/09/2002 |
| 5779012 | Hydrokinetic torque converter with lockup clutch The housing of a hydrokinetic torque converter in the power train between the engine and the transmission of a motor vehicle contains a lockup valve which can be engaged to transmit torque directly from the output element of the engine to the output membe... | 07/14/1998 |
| 5690201 | Method and device for controlling a coupling A coupling for transmitting torque between two parts (14, 20; 16, 24) which are rotatable relative to one another, comprising a friction coupling (12) whose friction elements (15, 17) are each non-rotatably connected to the one and the other of the parts ... | 11/25/1997 |
| 5526912 | Method of and device for controlling a coupling A coupling for transmitting torque between two parts has a friction or viscous coupling. The friction coupling is loaded by a piston and rotational member. A shear channel is formed between faces such that viscous fluid contained in the chamber is moved a... | 06/18/1996 |
| 5482148 | System for transmission overspeed and horsepower limit protection The present invention is directed to a retarder control system for protection against transmission overspeed. The system operates in conjunction with a rotatable input member and an output member that is rotatable relative to the input member. A torque tr... | 01/09/1996 |
| 5394698 | Hydraulic transmission apparatus A hydraulic transmission apparatus has: a swash plate hydraulic pump having a pump cylinder block; and a swash plate hydraulic motor which has a motor cylinder block and is arranged coaxially in a line with the swash plate pump so as to face in the same d... | 03/07/1995 |
| 5145043 | Hydraulic clutch Disclosed is a hydraulic clutch mounted between a power source and an output shaft. The clutch includes a pump mechanism including a hollow housing assembly coupled to the power source and rotatably mounted on the output shaft and having hydraulic passage... | 09/08/1992 |
| 4907684 | Ball drain valve for the piston space of a rotary multi-disc clutch A ball drain valve (2), for the piston space (33) of a rotary clutch disc (3) for releasing the clutch disc piston (32) from pressure generated by rotation of pressurized oil remaining in the piston space when it is bled, including an opening (220), at le... | 03/13/1990 |
| 4842115 | Hydraulic clutch A hydraulic clutch for transmitting torque from an input rotating member to an output rotating member when friction plates are brought into engagement with each other. Hydraulic fluid having pressure depending upon rotational speed of an input shaft is su... | 06/27/1989 |
| 4787268 | Step change-speed transmission with centrifugal clutch Stepwise change-speed transmission between the engine and the drive shafts of the driven wheels of a motor vehicle including expansible driving and driven pulleys supported respectively by a main shaft and a driven shaft, and a friction clutch mounted on ... | 11/29/1988 |
| 4632233 | Torque converter equipped with lockup control unit A torque converter equipped with a lockup control unit providing a hydraulic clutch in the torque converter, utilizing a hydraulic power supply for the hydraulic clutch as a feed pump for circulating oil in the torque converter, and providing a control va... | 12/30/1986 |
| 4586594 | Clutch assembly capable of being engaged by fluid pressure depending on centrifugal force A clutch assembly is preferably designed as a multiple-disc clutch. Rotating with one clutch half (22) is a clutch-engaging piston (26) and a pressure chamber (25) into which fluid may be admitted. Against the force of a spring (29), the piston may be sub... | 05/06/1986 |
| 4570771 | Viscous fluid coupling having centrifugal valve means The viscous fluid coupling is comprised of a drive shaft having a hollow casing rotatably mounted thereon with one end of the drive shaft extending into the hollow casing. The interior of the casing is divided into a reservoir chamber and an operating cha... | 02/18/1986 |
| 4541513 | Fluid power transmission A fluid power transmission adapted for combination with an engine to drive auxiliary equipment thereto including a rotor arrangement for direct driving connection to the engine crankshaft and a housing assembly rotatably supported on the rotor arrangement... | 09/17/1985 |
| 4485903 | Centrifugal actuated friction clutch with a hydraulic apply piston A friction clutch has an apply piston slidably disposed in a clutch housing and cooperating therewith to form an apply chamber and a feed chamber. The effective area of the apply chamber is greater than the effective area of the feed chamber. Pressurized ... | 12/04/1984 |
| 4421218 | Relief valve means for rotatable fluid-pressure mechanisms Disclosed is a fluid-pressure operated mechanism such as a clutch having radial walls defining a fluid-receiving and exhausting chamber between them. The clutch is of the hydraulic-apply, spring-release type, fluid pressure being supplied to engage the cl... | 12/20/1983 |
| 4361217 | Clutch assembly for semiautomatic gear transmission A disk clutch inserted between a torque converter and a synchromesh gear train of an automotive transmission comprises a driving friction-plate carrier coupled with the turbine of the converter and a driven friction-plate carrier coupled with an input sha... | 11/30/1982 |
| 4318311 | Centrifugally actuated valve for transmission In a transmission having input and output shafts drivingly connected by fluid pressure operated ratio establishing devices an improved centrifugally actuated valve is provided to disestablish the driving connection maximum angular velocity of the input sh... | 03/09/1982 |
| 4308940 | Hydraulic control for a clutch Apparatus for controlling a clutch operable by fluid pressure in an operation space includes a fluid supply conduit, a rotatable control valve with a valve member displaceable by centrifugal force against the force of a biasing spring for connecting the f... | 01/05/1982 |
| 4249647 | Friction clutch having a centrifugally actuated hydraulic control valve A hydraulically actuated friction plate type clutch having a centrifugally actuated valve for controlling the amount of modulation or engagement of the friction clutch, and apparatus such as a counterweight for counteracting the centrifugal force characte... | 02/10/1981 |
| 4248332 | Fluid gear coupling The present invention is drawn to a fluid gear coupling in which the lock up RPM between the drive member or power input shaft and the driven member or power output shaft is variable depending on the torque or power applied to the drive member or power in... | 02/03/1981 |
| 4238020 | Centrifugal clutch with an overspeed relief valve and clutch modulation A fluid pressure operated clutch which transmits torque from an engine output shaft to a transmission input shaft, including a rotatable flywheel connected to the output shaft, an adapter connected to the flywheel for rotation with the flywheel, the adapt... | 12/09/1980 |
| 4193484 | Rotary hydrostatic coupling A rotary hydraulic coupling wherein the rotary motion of a fluid-filled casing is transmitted to a coaxial driven shaft through the medium of a plurality of pistons which have eccentric drive connections with the driven shaft and which work in cylinders t... | 03/18/1980 |
| 4134482 | Device to effect control over the friction clutch of a transport vehicle A device comprising housing communicating with a pressure source and with e atmosphere through a traversable member operatively interconnected with the engine crankshaft, a link mounted in the housing interior traversably in response to pressure variation... | 01/16/1979 |
| 4131184 | Vehicle hydraulic transmission A vehicle drive transmission comprising an air released main clutch connected between a torque convertor and multiple ratio gear transmisson. A lock up clutch for the convertor turbine and impeller is engaged by hydraulic pressure when an engine drive gov... | 12/26/1978 |
| 4099603 | Lock-up clutch control valves Control valve assemblies for a lock-up clutch in a vehicle drive system, wherein a torque converter normally couples a prime mover with a transmission, vary the degree of engagement of the lock-up clutch with respect to prime mover rotational speed within... | 07/11/1978 |
| 4096882 | Control valve A control valve having a rotor for communicating outlet port or ports selectively to fluid drain port or to inlet port so as to change flow direction of fluid to be supplied to fluid operated apparatus. The control valve comprises first and second pistons... | 06/27/1978 |
| 4095684 | Fluid operated clutch A fluid operated clutch assemblage having axially aligned rotary input and output members, at least one axially movable disc carried by one member and at least one axially movable plate carried by the other member and an axially movable, hydraulically ope... | 06/20/1978 |
| 4091899 | Lock-up converter clutch with centrifugal control valves A torque converter and lock-up clutch in which a single plate fluid operated clutch is disposed between the turbine and the input shell of the torque converter. The clutch engagement chamber is formed between the turbine and the clutch plate while a clutc... | 05/30/1978 |
| 4084601 | Speed control valve for a fluid operated clutch A control valve for a fluid operated clutch or the like, including a valve body, a first valve mounted for reciprocation in the valve body, a second valve mounted for reciprocation in the valve body and for relative movement with respect to the first valv... | 04/18/1978 |
| 4071126 | Safety apparatus in an automatic transmission for a vehicle to prevent engagement of the low speed clutch at high speeds In an automatic transmission apparatus for a vehicle of the type having a high speed clutch of oil pressure operated type interposed in a high speed power transmission system and a low speed clutch of oil pressure operated type interposed in a low speed p... | 01/31/1978 |
| 4006808 | Controls for a centrifugal fluid clutch A control system, for a rotating clutch having a rotating housing with a cavity adapted to axially slidably receive a clutch actuating piston therein and defining a clutch actuating chamber therebetween, includes a source of fluid, a control valve for inf... | 02/08/1977 |
| 3977502 | Hydrodynamic drive and slipping clutch A hydrodynamic drive and slipping clutch arranged in parallel drive relation to provide a controlled slip input drive to a mechanical gear arrangement. The slip speed of the clutch, and therefore the hydrodynamic drive, is controlled by clutch engagement ... | 08/31/1976 |
| 3974900 | Rotary displacement coupling device A rotary displacement mechanical coupling device having a casing containing a first and second axially aligned chamber, said chambers having a partition therebetween. A hub is rotatably mounted through the partition and extending into both of the first an... | 08/17/1976 |